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Pin langchain to latest version 1.1.2 #689

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@pyup-bot pyup-bot commented Dec 5, 2025

This PR pins langchain to the latest release 1.1.2.

Changelog

1.1.2

Patch Changes

-   Updated dependencies \[[`636b994`](https://github.com/langchain-ai/langchainjs/commit/636b99459bf843362298866211c63a7a15c2a319), [`38f0162`](https://github.com/langchain-ai/langchainjs/commit/38f0162b7b2db2be2c3a75ae468728adcb49fdfb)]:
 -   langchain/core1.1.1


langchain/ollama1.0.3
Patch Changes

-   [9490](https://github.com/langchain-ai/langchainjs/pull/9490) [`57fe46f`](https://github.com/langchain-ai/langchainjs/commit/57fe46fdef09146814bf811dee6e439e01ced9a8) Thanks [christian-bromann](https://github.com/christian-bromann)! - separate thinking content into reasoning_content field


langchain/mongodb1.0.2
Patch Changes

-   [9502](https://github.com/langchain-ai/langchainjs/pull/9502) [`fa8c36e`](https://github.com/langchain-ai/langchainjs/commit/fa8c36e4ba3ab19c30a1ed9fd2e6392fc6778a2c) Thanks [hntrl](https://github.com/hntrl)! - bump mongodb dep


langchain/mcp-adapters1.0.2
Patch Changes

-   [9514](https://github.com/langchain-ai/langchainjs/pull/9514) [`6cecddf`](https://github.com/langchain-ai/langchainjs/commit/6cecddf07f3daa8c45a3da33f04759f8af0eec41) Thanks [strowk](https://github.com/strowk)! - fix: pass cwd to mcp sdk correctly


langchain/google-webauth2.0.1
Patch Changes

-   Updated dependencies \[[`636b994`](https://github.com/langchain-ai/langchainjs/commit/636b99459bf843362298866211c63a7a15c2a319), [`38f0162`](https://github.com/langchain-ai/langchainjs/commit/38f0162b7b2db2be2c3a75ae468728adcb49fdfb)]:
 -   langchain/core1.1.1
 -   langchain/google-common2.0.1


langchain/google-vertexai2.0.1
Patch Changes

-   Updated dependencies \[]:
 -   langchain/google-gauth2.0.1


langchain/google-vertexai-web2.0.1
Patch Changes

-   Updated dependencies \[]:
 -   langchain/google-webauth2.0.1


langchain/google-genai2.0.1
Patch Changes

-   Updated dependencies \[[`636b994`](https://github.com/langchain-ai/langchainjs/commit/636b99459bf843362298866211c63a7a15c2a319), [`38f0162`](https://github.com/langchain-ai/langchainjs/commit/38f0162b7b2db2be2c3a75ae468728adcb49fdfb)]:
 -   langchain/core1.1.1


langchain/google-gauth2.0.1
Patch Changes

-   Updated dependencies \[]:
 -   langchain/google-common2.0.1


langchain/google-common2.0.1
Patch Changes

-   Updated dependencies \[[`636b994`](https://github.com/langchain-ai/langchainjs/commit/636b99459bf843362298866211c63a7a15c2a319), [`38f0162`](https://github.com/langchain-ai/langchainjs/commit/38f0162b7b2db2be2c3a75ae468728adcb49fdfb)]:
 -   langchain/core1.1.1


langchain/google-cloud-sql-pg1.0.2
Patch Changes

-   Updated dependencies \[[`636b994`](https://github.com/langchain-ai/langchainjs/commit/636b99459bf843362298866211c63a7a15c2a319), [`38f0162`](https://github.com/langchain-ai/langchainjs/commit/38f0162b7b2db2be2c3a75ae468728adcb49fdfb)]:
 -   langchain/core1.1.1


langchain/core1.1.1
Patch Changes

-   [9495](https://github.com/langchain-ai/langchainjs/pull/9495) [`636b994`](https://github.com/langchain-ai/langchainjs/commit/636b99459bf843362298866211c63a7a15c2a319) Thanks [gsriram24](https://github.com/gsriram24)! - fix: use dynamic import for p-retry to support CommonJS environments

-   [9531](https://github.com/langchain-ai/langchainjs/pull/9531) [`38f0162`](https://github.com/langchain-ai/langchainjs/commit/38f0162b7b2db2be2c3a75ae468728adcb49fdfb) Thanks [hntrl](https://github.com/hntrl)! - add `extras` to tools


langchain/community1.0.6
Patch Changes

-   [9501](https://github.com/langchain-ai/langchainjs/pull/9501) [`8b9f66f`](https://github.com/langchain-ai/langchainjs/commit/8b9f66f7212f5fc1607566c130d247c2e17ca546) Thanks [hntrl](https://github.com/hntrl)! - fix community exports (#9494)

-   [9498](https://github.com/langchain-ai/langchainjs/pull/9498) [`31240d4`](https://github.com/langchain-ai/langchainjs/commit/31240d4314ec3bc776fa8aea7c33870c6ffa5a72) Thanks [hntrl](https://github.com/hntrl)! - enable model gateway usage in IBM implementation

-   Updated dependencies \[]:
 -   langchain/classic1.0.5
 -   langchain/openai1.1.3


langchain/aws1.1.0
Minor Changes

-   [9129](https://github.com/langchain-ai/langchainjs/pull/9129) [`6f8fa47`](https://github.com/langchain-ai/langchainjs/commit/6f8fa47388fd5c5d2bc8476e29349720d8fe7784) Thanks [tinque](https://github.com/tinque)! - feat(aws): allow bedrock Application Inference Profile


langchain/anthropic1.2.0
Minor Changes

-   [9531](https://github.com/langchain-ai/langchainjs/pull/9531) [`38f0162`](https://github.com/langchain-ai/langchainjs/commit/38f0162b7b2db2be2c3a75ae468728adcb49fdfb) Thanks [hntrl](https://github.com/hntrl)! - support advanced tool use

Patch Changes

-   Updated dependencies \[[`636b994`](https://github.com/langchain-ai/langchainjs/commit/636b99459bf843362298866211c63a7a15c2a319), [`38f0162`](https://github.com/langchain-ai/langchainjs/commit/38f0162b7b2db2be2c3a75ae468728adcb49fdfb)]:
 -   langchain/core1.1.1

1.1.1

Patch Changes

-   [9487](https://github.com/langchain-ai/langchainjs/pull/9487) [`4827945`](https://github.com/langchain-ai/langchainjs/commit/48279457ee44f36cdde175a537e2b12f5866627f) Thanks [hntrl](https://github.com/hntrl)! - constrain lower bound core peer dep


langchain/yandex1.0.1
Patch Changes

-   [9416](https://github.com/langchain-ai/langchainjs/pull/9416) [`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4) Thanks [hntrl](https://github.com/hntrl)! - fix 'moduleResultion: "node"' compatibility


langchain/xai1.0.2
Patch Changes

-   [9416](https://github.com/langchain-ai/langchainjs/pull/9416) [`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4) Thanks [hntrl](https://github.com/hntrl)! - fix 'moduleResultion: "node"' compatibility

-   Updated dependencies \[[`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4)]:
 -   langchain/openai1.1.3


langchain/weaviate1.0.1
Patch Changes

-   [9416](https://github.com/langchain-ai/langchainjs/pull/9416) [`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4) Thanks [hntrl](https://github.com/hntrl)! - fix 'moduleResultion: "node"' compatibility


langchain/textsplitters1.0.1
Patch Changes

-   [9416](https://github.com/langchain-ai/langchainjs/pull/9416) [`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4) Thanks [hntrl](https://github.com/hntrl)! - fix 'moduleResultion: "node"' compatibility


langchain/tavily1.0.1
Patch Changes

-   [9416](https://github.com/langchain-ai/langchainjs/pull/9416) [`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4) Thanks [hntrl](https://github.com/hntrl)! - fix 'moduleResultion: "node"' compatibility


langchain/redis1.0.1
Patch Changes

-   [9416](https://github.com/langchain-ai/langchainjs/pull/9416) [`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4) Thanks [hntrl](https://github.com/hntrl)! - fix 'moduleResultion: "node"' compatibility


langchain/qdrant1.0.1
Patch Changes

-   [9416](https://github.com/langchain-ai/langchainjs/pull/9416) [`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4) Thanks [hntrl](https://github.com/hntrl)! - fix 'moduleResultion: "node"' compatibility


langchain/pinecone1.0.1
Patch Changes

-   [9416](https://github.com/langchain-ai/langchainjs/pull/9416) [`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4) Thanks [hntrl](https://github.com/hntrl)! - fix 'moduleResultion: "node"' compatibility


langchain/ollama1.0.2
Patch Changes

-   [9416](https://github.com/langchain-ai/langchainjs/pull/9416) [`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4) Thanks [hntrl](https://github.com/hntrl)! - fix 'moduleResultion: "node"' compatibility

-   [9470](https://github.com/langchain-ai/langchainjs/pull/9470) [`960bd46`](https://github.com/langchain-ai/langchainjs/commit/960bd46d5916146c68a8a91fe7126e5408f06458) Thanks [loehde](https://github.com/loehde)! - fix(deps): update ollama dependency to version 0.6.3 and add dimensio…


langchain/nomic1.0.1
Patch Changes

-   [9416](https://github.com/langchain-ai/langchainjs/pull/9416) [`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4) Thanks [hntrl](https://github.com/hntrl)! - fix 'moduleResultion: "node"' compatibility


langchain/mongodb1.0.1
Patch Changes

-   [9416](https://github.com/langchain-ai/langchainjs/pull/9416) [`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4) Thanks [hntrl](https://github.com/hntrl)! - fix 'moduleResultion: "node"' compatibility


langchain/mixedbread-ai1.0.1
Patch Changes

-   [9416](https://github.com/langchain-ai/langchainjs/pull/9416) [`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4) Thanks [hntrl](https://github.com/hntrl)! - fix 'moduleResultion: "node"' compatibility


langchain/mistralai1.0.1
Patch Changes

-   [9416](https://github.com/langchain-ai/langchainjs/pull/9416) [`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4) Thanks [hntrl](https://github.com/hntrl)! - fix 'moduleResultion: "node"' compatibility


langchain/mcp-adapters1.0.1
Patch Changes

-   [9416](https://github.com/langchain-ai/langchainjs/pull/9416) [`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4) Thanks [hntrl](https://github.com/hntrl)! - fix 'moduleResultion: "node"' compatibility


langchain/groq1.0.2
Patch Changes

-   [9416](https://github.com/langchain-ai/langchainjs/pull/9416) [`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4) Thanks [hntrl](https://github.com/hntrl)! - fix 'moduleResultion: "node"' compatibility


langchain/google-webauth1.0.4
Patch Changes

-   [9416](https://github.com/langchain-ai/langchainjs/pull/9416) [`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4) Thanks [hntrl](https://github.com/hntrl)! - fix 'moduleResultion: "node"' compatibility

-   Updated dependencies \[[`708d360`](https://github.com/langchain-ai/langchainjs/commit/708d360df1869def7e4caaa5995d6e907bbf54cd), [`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4), [`21a8374`](https://github.com/langchain-ai/langchainjs/commit/21a83742af89e6a7f29d303f63729d0e31b59fdd), [`10fa2af`](https://github.com/langchain-ai/langchainjs/commit/10fa2afec0b81efd3467e61b59ba5c82e1043de5)]:
 -   langchain/core1.1.0
 -   langchain/google-common2.0.0


langchain/google-vertexai1.0.4
Patch Changes

-   [9416](https://github.com/langchain-ai/langchainjs/pull/9416) [`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4) Thanks [hntrl](https://github.com/hntrl)! - fix 'moduleResultion: "node"' compatibility

-   Updated dependencies \[[`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4)]:
 -   langchain/google-gauth2.0.0


langchain/google-vertexai-web1.0.4
Patch Changes

-   [9416](https://github.com/langchain-ai/langchainjs/pull/9416) [`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4) Thanks [hntrl](https://github.com/hntrl)! - fix 'moduleResultion: "node"' compatibility

-   Updated dependencies \[[`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4)]:
 -   langchain/google-webauth2.0.0


langchain/google-gauth1.0.4
Patch Changes

-   [9416](https://github.com/langchain-ai/langchainjs/pull/9416) [`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4) Thanks [hntrl](https://github.com/hntrl)! - fix 'moduleResultion: "node"' compatibility

-   Updated dependencies \[[`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4), [`21a8374`](https://github.com/langchain-ai/langchainjs/commit/21a83742af89e6a7f29d303f63729d0e31b59fdd)]:
 -   langchain/google-common2.0.0


langchain/google-common1.0.4
Patch Changes

-   [9416](https://github.com/langchain-ai/langchainjs/pull/9416) [`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4) Thanks [hntrl](https://github.com/hntrl)! - fix 'moduleResultion: "node"' compatibility

-   [9440](https://github.com/langchain-ai/langchainjs/pull/9440) [`21a8374`](https://github.com/langchain-ai/langchainjs/commit/21a83742af89e6a7f29d303f63729d0e31b59fdd) Thanks [manekinekko](https://github.com/manekinekko)! - update polynomial regex to mitigate ReDoS vulnerability in SseStream

-   Updated dependencies \[[`708d360`](https://github.com/langchain-ai/langchainjs/commit/708d360df1869def7e4caaa5995d6e907bbf54cd), [`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4), [`10fa2af`](https://github.com/langchain-ai/langchainjs/commit/10fa2afec0b81efd3467e61b59ba5c82e1043de5)]:
 -   langchain/core1.1.0


langchain/google-cloud-sql-pg1.0.1
Patch Changes

-   [9416](https://github.com/langchain-ai/langchainjs/pull/9416) [`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4) Thanks [hntrl](https://github.com/hntrl)! - fix 'moduleResultion: "node"' compatibility

-   Updated dependencies \[[`708d360`](https://github.com/langchain-ai/langchainjs/commit/708d360df1869def7e4caaa5995d6e907bbf54cd), [`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4), [`10fa2af`](https://github.com/langchain-ai/langchainjs/commit/10fa2afec0b81efd3467e61b59ba5c82e1043de5)]:
 -   langchain/core1.1.0


langchain/exa1.0.1
Patch Changes

-   [9416](https://github.com/langchain-ai/langchainjs/pull/9416) [`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4) Thanks [hntrl](https://github.com/hntrl)! - fix 'moduleResultion: "node"' compatibility


langchain/deepseek1.0.2
Patch Changes

-   [9416](https://github.com/langchain-ai/langchainjs/pull/9416) [`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4) Thanks [hntrl](https://github.com/hntrl)! - fix 'moduleResultion: "node"' compatibility

-   Updated dependencies \[[`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4)]:
 -   langchain/openai1.1.3


langchain/cohere1.0.1
Patch Changes

-   [9416](https://github.com/langchain-ai/langchainjs/pull/9416) [`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4) Thanks [hntrl](https://github.com/hntrl)! - fix 'moduleResultion: "node"' compatibility


langchain/cloudflare1.0.1
Patch Changes

-   [9416](https://github.com/langchain-ai/langchainjs/pull/9416) [`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4) Thanks [hntrl](https://github.com/hntrl)! - fix 'moduleResultion: "node"' compatibility


langchain/cerebras1.0.1
Patch Changes

-   [9416](https://github.com/langchain-ai/langchainjs/pull/9416) [`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4) Thanks [hntrl](https://github.com/hntrl)! - fix 'moduleResultion: "node"' compatibility


langchain/baidu-qianfan1.0.1
Patch Changes

-   [9416](https://github.com/langchain-ai/langchainjs/pull/9416) [`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4) Thanks [hntrl](https://github.com/hntrl)! - fix 'moduleResultion: "node"' compatibility


langchain/azure-dynamic-sessions1.0.1
Patch Changes

-   [9416](https://github.com/langchain-ai/langchainjs/pull/9416) [`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4) Thanks [hntrl](https://github.com/hntrl)! - fix 'moduleResultion: "node"' compatibility


langchain/azure-cosmosdb1.1.0
Minor Changes

-   [9439](https://github.com/langchain-ai/langchainjs/pull/9439) [`521ba2c`](https://github.com/langchain-ai/langchainjs/commit/521ba2c5d82e253668d4df47f1c056f5e91b5ff6) Thanks [sinedied](https://github.com/sinedied)! - Implement addMessages for chat histories

Patch Changes

-   [9416](https://github.com/langchain-ai/langchainjs/pull/9416) [`0fe9beb`](https://github.com/langchain-ai/langchainjs/commit/0fe9bebee6710f719e47f913eec1ec4f638e4de4) Thanks [hntrl](https://github.com/hntrl)! - fix 'moduleResultion: "node"' compatibility


langchain/anthropic1.1.3
Patch Changes

-   [9488](https://github.com/langchain-ai/langchainjs/pull/9488) [`cfee39a`](https://github.com/langchain-ai/langchainjs/commit/cfee39a0b867e8cd4ae7bda3d64bba4124be4e10) Thanks [hntrl](https://github.com/hntrl)! - add opus-4.5 to model strings

1.0.6

Patch Changes

-   [9434](https://github.com/langchain-ai/langchainjs/pull/9434) [`f7cfece`](https://github.com/langchain-ai/langchainjs/commit/f7cfecec29bf0f121e1a8b0baface5327d731122) Thanks [deepansh946](https://github.com/deepansh946)! - Updated error handling behaviour of AgentNode


langchain/google-webauth1.0.3
Patch Changes

-   Updated dependencies \[]:
 -   langchain/google-common1.0.3


langchain/google-vertexai1.0.3
Patch Changes

-   Updated dependencies \[]:
 -   langchain/google-gauth1.0.3


langchain/google-vertexai-web1.0.3
Patch Changes

-   Updated dependencies \[]:
 -   langchain/google-webauth1.0.3


langchain/google-genai1.0.3
Patch Changes

-   [9444](https://github.com/langchain-ai/langchainjs/pull/9444) [`39404ac`](https://github.com/langchain-ai/langchainjs/commit/39404acf76e81360054910f417d01df02981a4e6) Thanks [hntrl](https://github.com/hntrl)! - add tier based usage metadata token count

-   [9444](https://github.com/langchain-ai/langchainjs/pull/9444) [`39404ac`](https://github.com/langchain-ai/langchainjs/commit/39404acf76e81360054910f417d01df02981a4e6) Thanks [hntrl](https://github.com/hntrl)! - fix streaming thought signature bug

-   [9444](https://github.com/langchain-ai/langchainjs/pull/9444) [`39404ac`](https://github.com/langchain-ai/langchainjs/commit/39404acf76e81360054910f417d01df02981a4e6) Thanks [hntrl](https://github.com/hntrl)! - add thinkingConfig support in ChatGoogleGenerativeAI

-   [9444](https://github.com/langchain-ai/langchainjs/pull/9444) [`39404ac`](https://github.com/langchain-ai/langchainjs/commit/39404acf76e81360054910f417d01df02981a4e6) Thanks [hntrl](https://github.com/hntrl)! - add cached token counts to usage metadata


langchain/google-gauth1.0.3
Patch Changes

-   Updated dependencies \[]:
 -   langchain/google-common1.0.3


langchain/google-common1.0.3



langchain/anthropic1.1.1
Patch Changes

-   [9451](https://github.com/langchain-ai/langchainjs/pull/9451) [`b1deda2`](https://github.com/langchain-ai/langchainjs/commit/b1deda21363b5a1a3f2b7bd77dc1d74764304666) Thanks [hntrl](https://github.com/hntrl)! - fix betas being passed to client when streaming

1.0.5

Patch Changes

-   [9403](https://github.com/langchain-ai/langchainjs/pull/9403) [`944bf56`](https://github.com/langchain-ai/langchainjs/commit/944bf56ff0926e102c56a3073bfde6b751c97794) Thanks [christian-bromann](https://github.com/christian-bromann)! - improvements to toolEmulator middleware

-   [9388](https://github.com/langchain-ai/langchainjs/pull/9388) [`831168a`](https://github.com/langchain-ai/langchainjs/commit/831168a5450bff706a319842626214281204346d) Thanks [hntrl](https://github.com/hntrl)! - use `profile.maxInputTokens` in summarization middleware

-   [9393](https://github.com/langchain-ai/langchainjs/pull/9393) [`f1e2f9e`](https://github.com/langchain-ai/langchainjs/commit/f1e2f9eeb365bae78c8b5991ed41bfed58f25da6) Thanks [christian-bromann](https://github.com/christian-bromann)! - align context editing with summarization interface

-   [9427](https://github.com/langchain-ai/langchainjs/pull/9427) [`bad7aea`](https://github.com/langchain-ai/langchainjs/commit/bad7aea86d3f60616952104c34a33de9561867c7) Thanks [dqbd](https://github.com/dqbd)! - fix(langchain): add tool call contents and tool call ID to improve token count approximation

-   [9396](https://github.com/langchain-ai/langchainjs/pull/9396) [`ed6b581`](https://github.com/langchain-ai/langchainjs/commit/ed6b581e525cdf5d3b29abb1e17ca6169554c1b5) Thanks [christian-bromann](https://github.com/christian-bromann)! - rename exit behavior from throw to error


langchain/openai1.1.2
Patch Changes

-   [9408](https://github.com/langchain-ai/langchainjs/pull/9408) [`415cb0b`](https://github.com/langchain-ai/langchainjs/commit/415cb0bfd26207583befdb02367bd12a46b33d51) Thanks [sinedied](https://github.com/sinedied)! - Fix missing and inconsistent user agent headers

-   [9301](https://github.com/langchain-ai/langchainjs/pull/9301) [`a2ad61e`](https://github.com/langchain-ai/langchainjs/commit/a2ad61e787a06a55a615f63589a65ada05927792) Thanks [sinedied](https://github.com/sinedied)! - support callable function for apiKey


langchain/google-webauth1.0.2
Patch Changes

-   Updated dependencies \[]:
 -   langchain/google-common1.0.2


langchain/google-vertexai1.0.2
Patch Changes

-   Updated dependencies \[]:
 -   langchain/google-gauth1.0.2


langchain/google-vertexai-web1.0.2
Patch Changes

-   Updated dependencies \[]:
 -   langchain/google-webauth1.0.2


langchain/google-genai1.0.2
Patch Changes

-   [9441](https://github.com/langchain-ai/langchainjs/pull/9441) [`269e5ba`](https://github.com/langchain-ai/langchainjs/commit/269e5bae04c76fdfbd42df66a97061bb0b93a834) Thanks [hntrl](https://github.com/hntrl)! - add function calling thought signature support


langchain/google-gauth1.0.2
Patch Changes

-   Updated dependencies \[]:
 -   langchain/google-common1.0.2


langchain/google-common1.0.2



langchain/community1.0.4
Patch Changes

-   [9326](https://github.com/langchain-ai/langchainjs/pull/9326) [`3e0cab6`](https://github.com/langchain-ai/langchainjs/commit/3e0cab61b32fae271936770b822cb9644f68b637) Thanks [ayanyev](https://github.com/ayanyev)! - Milvus vector store client: ignore auto-calculated fields in collection schema during payload validation

-   Updated dependencies \[[`415cb0b`](https://github.com/langchain-ai/langchainjs/commit/415cb0bfd26207583befdb02367bd12a46b33d51), [`a2ad61e`](https://github.com/langchain-ai/langchainjs/commit/a2ad61e787a06a55a615f63589a65ada05927792), [`34c472d`](https://github.com/langchain-ai/langchainjs/commit/34c472d129c9c3d58042fad6479fd15e0763feaf)]:
 -   langchain/openai1.1.2
 -   langchain/classic1.0.4


langchain/classic1.0.4
Patch Changes

-   [9379](https://github.com/langchain-ai/langchainjs/pull/9379) [`34c472d`](https://github.com/langchain-ai/langchainjs/commit/34c472d129c9c3d58042fad6479fd15e0763feaf) Thanks [kenowessels](https://github.com/kenowessels)! - OpenAPIToJSONSchema required from nested schema

-   Updated dependencies \[[`415cb0b`](https://github.com/langchain-ai/langchainjs/commit/415cb0bfd26207583befdb02367bd12a46b33d51), [`a2ad61e`](https://github.com/langchain-ai/langchainjs/commit/a2ad61e787a06a55a615f63589a65ada05927792)]:
 -   langchain/openai1.1.2


langchain/aws1.0.2
Patch Changes

-   [9382](https://github.com/langchain-ai/langchainjs/pull/9382) [`f464366`](https://github.com/langchain-ai/langchainjs/commit/f4643668158a702d086da1defcbfd6ee3f050810) Thanks [deepansh946](https://github.com/deepansh946)! - fix handling of multiple tool types in convertToConverseTools fn


langchain/anthropic1.1.0
Minor Changes

-   [9424](https://github.com/langchain-ai/langchainjs/pull/9424) [`f17b2c9`](https://github.com/langchain-ai/langchainjs/commit/f17b2c9db047fab2d1db2d9aa791ec220cc9dd0a) Thanks [hntrl](https://github.com/hntrl)! - add support for `betas` param

-   [9424](https://github.com/langchain-ai/langchainjs/pull/9424) [`f17b2c9`](https://github.com/langchain-ai/langchainjs/commit/f17b2c9db047fab2d1db2d9aa791ec220cc9dd0a) Thanks [hntrl](https://github.com/hntrl)! - add support for native structured output

Patch Changes

-   [9424](https://github.com/langchain-ai/langchainjs/pull/9424) [`f17b2c9`](https://github.com/langchain-ai/langchainjs/commit/f17b2c9db047fab2d1db2d9aa791ec220cc9dd0a) Thanks [hntrl](https://github.com/hntrl)! - bump sdk version

1.0.4

Patch Changes

- b401680: avoid invalid message order after summarization
- f63fc0f: fix(langchain): export ToolRuntime from langchain

langchain/openai==1.1.0
Minor Changes

- 8319201: hoist message/tool conversion utilities from classes

langchain/ollama==1.0.1
Patch Changes

- a2bce18: fix(ollama): support parsing structured output from tool calls

langchain/core==1.0.4
Patch Changes

- 8319201: Export standard converter function utility

langchain/community==1.0.2
Patch Changes

- b17762a: fix(community): export type properly in duckduckgo_search
- e4a3b3b: improve(pdf-loader): update error message to specify support for pdf-parse v1 only
- ecc7a8a: swap problematic eval package
- Updated dependencies [8319201]
- Updated dependencies [4906522]
- langchain/openai1.1.0
- langchain/classic1.0.2

langchain/classic==1.0.2
Patch Changes

- Updated dependencies [8319201]
- Updated dependencies [4906522]
- langchain/openai1.1.0
- langchain/textsplitters1.0.0

langchain/aws==1.0.1
Patch Changes

- bce4e45: fix(aws): conditional inference config and system message | ChatBedrockConverse

1.0.3

Patch Changes

- f1583cd: allow for model strings in summarization middleware
- e960f97: check message property when pulling chat models for vercel compat
- 66fc10c: fix(langchain): don't allow default or optional context schemas
- 0a8a23b: feat(langchain/core): support of ToolRuntime
- b38be50: Add missing ToolMessage in toolStrategy structured output
- 42930b5: fix(langchain): improved state schema typing

langchain/core==1.0.3
Patch Changes

- 0a8a23b: feat(langchain/core): support of ToolRuntime

1.0.2

What's Changed

Patch Changes

- 2e45c43: remove bad dynamic import for LS
- 28eceac: preserve full model name when deciding model provider

langchain/core==1.0.2
What's Changed

Patch Changes

- 6426eb6: fix chunks constructed with tool calls + chunks
- 619ae64: Add `BaseMessage.toFormattedString()`

langchain/core==0.3.79
What's Changed

Patch Changes

- 1063b43: fix chunks constructed with tool calls + chunks

langchain/community==1.0.1
What's Changed

Patch Changes

- Updated dependencies [dda9ea4]
- langchain/classic1.0.1
- langchain/openai1.0.0

langchain/classic==1.0.1
What's changed

Patch Changes

- dda9ea4: reinstate `OpenAIModerationChain`
- langchain/textsplitters1.0.0
- langchain/openai1.0.0

langchain/anthropic==0.3.33
What's changed

Patch Changes

- 247cfb6: support Haiku 4.5 topP parameter

1.0.0

🎉 **LangChain v1.0** is here! This release provides a focused, production-ready foundation for building agents. We've streamlined the framework around three core improvements: **`createAgent`**, **standard content blocks**, and a **simplified package structure**. See the [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for complete details.

✨ Major Features

`createAgent` - A new standard for building agents

`createAgent` is the new standard way to build agents in LangChain 1.0. It provides a simpler interface than `createReactAgent` from LangGraph while offering greater customization potential through middleware.

**Key features:**

- **Clean, intuitive API**: Build agents with minimal boilerplate
- **Built on LangGraph**: Get persistence, streaming, human-in-the-loop, and time travel out of the box
- **Middleware-first design**: Highly customizable through composable middleware
- **Improved structured output**: Generate structured outputs in the main agent loop without additional LLM calls

Example:

typescript
import { createAgent } from "langchain";

const agent = createAgent({
model: "anthropic:claude-sonnet-4-5-20250929",
tools: [getWeather],
systemPrompt: "You are a helpful assistant.",
});

const result = await agent.invoke({
messages: [{ role: "user", content: "What is the weather in Tokyo?" }],
});

console.log(result.content);


Under the hood, `createAgent` is built on the basic agent loop—calling a model using LangGraph, letting it choose tools to execute, and then finishing when it calls no more tools.

**Built on LangGraph features (work out of the box):**

- **Persistence**: Conversations automatically persist across sessions with built-in checkpointing
- **Streaming**: Stream tokens, tool calls, and reasoning traces in real-time
- **Human-in-the-loop**: Pause agent execution for human approval before sensitive actions
- **Time travel**: Rewind conversations to any point and explore alternate paths

**Structured output improvements:**

- Generate structured outputs in the main loop instead of requiring an additional LLM call
- Models can choose between calling tools or using provider-side structured output generation
- Significant cost reduction by eliminating extra LLM calls

Example:

typescript
import { createAgent } from "langchain";
import * as z from "zod";

const weatherSchema = z.object({
temperature: z.number(),
condition: z.string(),
});

const agent = createAgent({
model: "openai:gpt-4o-mini",
tools: [getWeather],
responseFormat: weatherSchema,
});

const result = await agent.invoke({
messages: [{ role: "user", content: "What is the weather in Tokyo?" }],
});

console.log(result.structuredResponse);


For more information, see [Agents documentation](https://docs.langchain.com/oss/javascript/langchain/agents).

Middleware

Middleware is what makes `createAgent` highly customizable, raising the ceiling for what you can build. Great agents require **context engineering**—getting the right information to the model at the right time. Middleware helps you control dynamic prompts, conversation summarization, selective tool access, state management, and guardrails through a composable abstraction.

**Prebuilt middleware** for common patterns:

typescript
import {
createAgent,
summarizationMiddleware,
humanInTheLoopMiddleware,
piiRedactionMiddleware,
} from "langchain";

const agent = createAgent({
model: "anthropic:claude-sonnet-4-5-20250929",
tools: [readEmail, sendEmail],
middleware: [
 piiRedactionMiddleware({ patterns: ["email", "phone", "ssn"] }),
 summarizationMiddleware({
   model: "anthropic:claude-sonnet-4-5-20250929",
   maxTokensBeforeSummary: 500,
 }),
 humanInTheLoopMiddleware({
   interruptOn: {
     sendEmail: {
       allowedDecisions: ["approve", "edit", "reject"],
     },
   },
 }),
] as const,
});


**Custom middleware** with lifecycle hooks:

| Hook            | When it runs             | Use cases                               |
| --------------- | ------------------------ | --------------------------------------- |
| `beforeAgent`   | Before calling the agent | Load memory, validate input             |
| `beforeModel`   | Before each LLM call     | Update prompts, trim messages           |
| `wrapModelCall` | Around each LLM call     | Intercept and modify requests/responses |
| `wrapToolCall`  | Around each tool call    | Intercept and modify tool execution     |
| `afterModel`    | After each LLM response  | Validate output, apply guardrails       |
| `afterAgent`    | After agent completes    | Save results, cleanup                   |

Example custom middleware:

typescript
import { createMiddleware } from "langchain";

const contextSchema = z.object({
userExpertise: z.enum(["beginner", "expert"]).default("beginner"),
});

const expertiseBasedToolMiddleware = createMiddleware({
wrapModelCall: async (request, handler) => {
 const userLevel = request.runtime.context.userExpertise;
 if (userLevel === "expert") {
   const tools = [advancedSearch, dataAnalysis];
   return handler(request.replace("openai:gpt-5", tools));
 }
 const tools = [simpleSearch, basicCalculator];
 return handler(request.replace("openai:gpt-5-nano", tools));
},
});

const agent = createAgent({
model: "anthropic:claude-sonnet-4-5-20250929",
tools: [simpleSearch, advancedSearch, basicCalculator, dataAnalysis],
middleware: [expertiseBasedToolMiddleware],
contextSchema,
});


For more information, see the [complete middleware guide](https://docs.langchain.com/oss/javascript/langchain/middleware).

Simplified Package

LangChain v1 streamlines the `langchain` package namespace to focus on essential building blocks for agents. The package exposes only the most useful and relevant functionality (most re-exported from `langchain/core` for convenience).

**What's in the core `langchain` package:**

- `createAgent` and agent-related utilities
- Core message types and content blocks
- Middleware infrastructure
- Tool definitions and schemas
- Prompt templates
- Output parsers
- Base runnable abstractions

🔄 Migration Notes

`langchain/classic` for Legacy Functionality

Legacy functionality has moved to [`langchain/classic`](https://www.npmjs.com/package/langchain/classic) to keep the core package lean and focused.

**What's in `langchain/classic`:**

- Legacy chains and chain implementations
- The indexing API
- [`langchain/community`](https://www.npmjs.com/package/langchain/community) exports
- Other deprecated functionality

**To migrate legacy code:**

1. Install `langchain/classic`:

bash
npm install langchain/classic


2. Update your imports:

typescript
import { ... } from "langchain"; // [!code --]
import { ... } from "langchain/classic"; // [!code ++]

import { ... } from "langchain/chains"; // [!code --]
import { ... } from "langchain/classic/chains"; // [!code ++]


Upgrading to v1

Install the v1 packages:

bash
npm install langchain1.0.0 langchain/core1.0.0


📚 Additional Resources

- [Release Notes](https://docs.langchain.com/oss/python/releases/langchain-v1)
- [Migration Guide](https://docs.langchain.com/oss/javascript/migrate/langchain-v1)
- [Agents Documentation](https://docs.langchain.com/oss/javascript/langchain/agents)
- [Middleware Guide](https://blog.langchain.com/agent-middleware/)

langchain/yandex==1.0.0
What's Changed

This release updates the package for compatibility with LangChain v1.0. See the v1.0 [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for details on what's new.

langchain/xai==1.0.0
What's Changed

This release updates the package for compatibility with LangChain v1.0. See the v1.0 [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for details on what's new.

langchain/weaviate==1.0.0
What's Changed

This release updates the package for compatibility with LangChain v1.0. See the v1.0 [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for details on what's new.

langchain/vertexai==1.0.0
What's Changed

This release updates the package for compatibility with LangChain v1.0. See the v1.0 [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for details on what's new.

langchain/vertexai-web==1.0.0
What's Changed

This release updates the package for compatibility with LangChain v1.0. See the v1.0 [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for details on what's new.

langchain/textsplitters==1.0.0
What's Changed

This release updates the package for compatibility with LangChain v1.0. See the v1.0 [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for details on what's new.

langchain/tavily==1.0.0
What's Changed

This release updates the package for compatibility with LangChain v1.0. See the v1.0 [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for details on what's new.

langchain/redis==1.0.0
What's Changed

This release updates the package for compatibility with LangChain v1.0. See the v1.0 [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for details on what's new.

langchain/qdrant==1.0.0
What's Changed

This release updates the package for compatibility with LangChain v1.0. See the v1.0 [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for details on what's new.

langchain/pinecone==1.0.0
What's Changed

This release updates the package for compatibility with LangChain v1.0. See the v1.0 [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for details on what's new.

langchain/openai==1.0.0
What's Changed

This release updates the package for compatibility with LangChain v1.0. See the v1.0 [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for details on what's new.

langchain/ollama==1.0.0
What's Changed

This release updates the package for compatibility with LangChain v1.0. See the v1.0 [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for details on what's new.

langchain/nomic==1.0.0
What's Changed

This release updates the package for compatibility with LangChain v1.0. See the v1.0 [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for details on what's new.

langchain/mongodb==1.0.0
What's Changed

This release updates the package for compatibility with LangChain v1.0. See the v1.0 [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for details on what's new.

langchain/mixedbread-ai==1.0.0
What's Changed

This release updates the package for compatibility with LangChain v1.0. See the v1.0 [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for details on what's new.

langchain/mistralai==1.0.0
What's Changed

This release updates the package for compatibility with LangChain v1.0. See the v1.0 [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for details on what's new.

langchain/mcp-adapters==1.0.0
What's Changed

This release updates the package for compatibility with LangChain v1.0. See the v1.0 [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for details on what's new.

langchain/groq==1.0.0
What's Changed

This release updates the package for compatibility with LangChain v1.0. See the v1.0 [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for details on what's new.

langchain/google-webauth==1.0.0
What's Changed

This release updates the package for compatibility with LangChain v1.0. See the v1.0 [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for details on what's new.

langchain/google-genai==1.0.0
What's Changed

This release updates the package for compatibility with LangChain v1.0. See the v1.0 [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for details on what's new.

langchain/google-gauth==1.0.0
What's Changed

This release updates the package for compatibility with LangChain v1.0. See the v1.0 [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for details on what's new.

langchain/google-common==1.0.0
What's Changed

This release updates the package for compatibility with LangChain v1.0. See the v1.0 [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for details on what's new.

langchain/google-cloud-sql-pg==1.0.0
What's Changed

This release updates the package for compatibility with LangChain v1.0. See the v1.0 [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for details on what's new.

langchain/exa==1.0.0
What's Changed

This release updates the package for compatibility with LangChain v1.0. See the v1.0 [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for details on what's new.

langchain/deepseek==1.0.0
What's Changed

This release updates the package for compatibility with LangChain v1.0. See the v1.0 [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for details on what's new.

langchain/core==1.0.0
🎉 **LangChain v1.0** is here! This release provides a focused, production-ready foundation for building agents with significant improvements to the core abstractions and APIs. See the [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for more details.

✨ Major Features

Standard content blocks

A new unified API for accessing modern LLM features across all providers:

- **New `contentBlocks` property**: Provides provider-agnostic access to reasoning traces, citations, built-in tools (web search, code interpreters, etc.), and other advanced LLM features
- **Type-safe**: Full TypeScript support with type hints for all content block types
- **Backward compatible**: Content blocks can be loaded lazily with no breaking changes to existing code

Example:

typescript
const response = await model.invoke([
{ role: "user", content: "What is the weather in Tokyo?" },
]);

// Access structured content blocks
for (const block of response.contentBlocks) {
if (block.type === "thinking") {
 console.log("Model reasoning:", block.thinking);
} else if (block.type === "text") {
 console.log("Response:", block.text);
}
}


For more information, see our guide on [content blocks](https://docs.langchain.com/oss/javascript/langchain/messages#content).

Enhanced Message API

Improvements to the core message types:

- **Structured content**: Better support for multimodal content with the new content blocks API
- **Provider compatibility**: Consistent message format across all LLM providers
- **Rich metadata**: Enhanced metadata support for tracking message provenance and transformations

🔧 Improvements

- **Better structured output generation**: Core abstractions for generating structured outputs in the main agent loop
- **Improved type safety**: Enhanced TypeScript definitions across all core abstractions
- **Performance optimizations**: Reduced overhead in message processing and runnable composition
- **Better error handling**: More informative error messages and better error recovery

📦 Package Changes

The `langchain/core` package remains focused on essential abstractions:

- Core message types and content blocks
- Base runnable abstractions
- Tool definitions and schemas
- Middleware infrastructure
- Callback system
- Output parsers
- Prompt templates

🔄 Migration Notes

**Backward Compatibility**: This release maintains backward compatibility with existing code. Content blocks are loaded lazily, so no changes are required to existing applications.

**New Features**: To take advantage of new features like content blocks and middleware:

1. Update to `langchain/corenext`:

bash
npm install langchain/core1.0.0


2. Use the new `contentBlocks` property to access rich content:

typescript
const response = await model.invoke(messages);
console.log(response.contentBlocks); // New API
console.log(response.content); // Legacy API still works


3. For middleware and `createAgent`, install `langchainnext`:

bash
npm install langchain1.0.0 langchain/core1.0.0


📚 Additional Resources

- [Release Notes](https://docs.langchain.com/oss/python/releases/langchain-v1)
- [Migration Guide](https://docs.langchain.com/oss/javascript/migrate/langchain-v1)
- [Content Blocks Documentation](https://docs.langchain.com/oss/javascript/langchain/messages#content)
- [Agents Documentation](https://docs.langchain.com/oss/javascript/langchain/agents)

langchain/community==1.0.0
What's Changed

This release updates the package for compatibility with LangChain v1.0. See the v1.0 [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for details on what's new.

langchain/cohere==1.0.0
What's Changed

This release updates the package for compatibility with LangChain v1.0. See the v1.0 [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for details on what's new.

langchain/cloudflare==1.0.0
What's Changed

This release updates the package for compatibility with LangChain v1.0. See the v1.0 [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for details on what's new.

langchain/classic==1.0.0
What's Changed

This release updates the package for compatibility with LangChain v1.0. See the v1.0 [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for details on what's new.

langchain/cerebras==1.0.0
What's Changed

This release updates the package for compatibility with LangChain v1.0. See the v1.0 [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for details on what's new.

langchain/baidu-qianfan==1.0.0
What's Changed

This release updates the package for compatibility with LangChain v1.0. See the v1.0 [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for details on what's new.

langchain/azure-dynamic-sessions==1.0.0
What's Changed

This release updates the package for compatibility with LangChain v1.0. See the v1.0 [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for details on what's new.

langchain/azure-cosmosdb==1.0.0
What's Changed

This release updates the package for compatibility with LangChain v1.0. See the v1.0 [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for details on what's new.

langchain/aws==1.0.0
What's Changed

This release updates the package for compatibility with LangChain v1.0. See the v1.0 [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for details on what's new.

langchain/anthropic==1.0.0
What's Changed

This release updates the package for compatibility with LangChain v1.0. See the v1.0 [release notes](https://docs.langchain.com/oss/javascript/releases/langchain-v1) for details on what's new.

1.0.0alpha.8

🚀 New Features

- **Context Editing Middleware** (9118): Added middleware for editing conversation context dynamically
- **Tool Call Limit Middleware** (9121): Implemented middleware to limit the number of tool calls during agent execution
- **Retry Model Request Hook** (9128): Added retry functionality for model requests in middleware
- **Call Count Tracking** (9090): Introduced call counts through private state for better monitoring and control
- **Custom Interrupted Tool Descriptions** (9116): Added ability to pass in a description factory for interrupted tool calls
- **PII Redaction Middleware** (9058): Added middleware for automatically redacting personally identifiable information
- **Perplexity Support**: Added Perplexity provider support to universal chat model

🐛 Bug Fixes

- **LLM Tool Selector Implementation** (9127): Updated implementation of LLMToolSelector middleware for improved reliability
- **LangGraph Integration** (9117): Fixed integration issues with LangGraph
- **Tool Instance Handling** (9119): Fixed tools in ModelRequest to return tool instances instead of serialized objects
- **TypeScript Type Inference** (9087): Exported all symbols to enable proper TypeScript type inference
- **Prompt Caching Immutability** (9086): Fixed PromptCachingMiddleware to return new message objects instead of modifying existing ones
- **Input Type Support** (9080): Improved input types to support a wider range of type definitions
- **Tools Node Creation** (9074): Fixed to only create tools node for client-provided tools
- **Planning Middleware Adjustments** (9070): Minor improvements to planning middleware behavior
- **Hub Prompt Schema Binding** (9057): Fixed schema binding for various types of pulled hub prompts

1.0.0alpha.7

🚀 New Features

- **Todo Middleware** (9051): Added new todo middleware functionality for agent workflows
- **LLM Tool Selector Middleware** (9050): Implemented `llmToolSelectorMiddleware` (bigTool) for intelligent tool selection
- **Middleware Tool Definition** (9046): Middleware can now define their own tools dynamically
- **Dynamic Prompt Middleware** (8993): Added built-in middleware for dynamic prompt generation
- **Unsupported Model Behavior** (9039): Added `unsupportedModelBehavior` property to anthropic middleware

🐛 Bug Fixes

- **System Prompt Consistency** (9045): Fixed system prompt handling across all agent components
- **Zod Interoperability** (9029): Improved compatibility between Zod v3 and v4
- **Structured Output Handling** (9033): Improved structured output processing for agents
- **Graph Support for Jumps** (9035): Added statically typed graph support for agent jumps
- **Tool Configuration Naming** (9034): Renamed `toolConfigs` to `interruptOn` for clarity
- **LLM Property Removal** (9017): Removed `llm` prop from middleware agent
- **Message Handling**: Fixed grabbing last AIMessage from list instead of just looking at last message
- **Memory Saver Export** (8996): Removed incorrect MemorySaver re-export
- **Middleware Naming** (8912): Fixed "middlewares" property naming to "middleware"
- **Cache Control Verification**: Actually verify cache control values in usage response
- **Message Instance Checking** (8905): Use `isInstance` for message validation

📦 Dependency and Build Fixes

- **OpenAI Provider Dependency** (8920): Removed dependency to openai provider package (alpha.6)
- **Internal ESLint Package** (8770): Created internal ESLint package (alpha.6)
- **Zod v4 Support** (8792): Updated to support Zod v4 (alpha.6)
- **Test Console Logs** (8998): Removed console logs in test files (alpha.7)


langchain/core==1.0.0-alpha.6
🚀 New Features

- **Google AI Standard Content** (9024): Added comprehensive standard content support for Google GenAI and Vertex AI
- **AWS Bedrock Standard Content** (9013): Implemented standard content support for AWS Bedrock Converse
- **Server Tool Blocks** (9000): Added server tool blocks to standard content system
- **Zod Interoperability** (9029): Improved compatibility between Zod v3 and v4

🐛 Bug Fixes

- **Response Metadata Type Mismatch** (9010): Fixed type mismatches in response metadata
- **Message Index Cleanup** (8972): Refined message exports

🔧 Technical Improvements

- **Google AI Integration**: Significantly enhanced Google GenAI and Vertex AI block translators
- **AWS Bedrock Integration**: Major improvements to Bedrock Converse support
- **Content Index Updates**: Enhanced content module exports

1.0.0alpha.5

What's Changed

* feat(langchain) new middleware concept for createAgent by christian-bromann in https://github.com/langchain-ai/langchainjs/pull/8851

**Full Changelog**: https://github.com/langchain-ai/langchainjs/compare/langchain==1.0.0-alpha.4...langchain==1.0.0-alpha.5

langchain/core==0.3.75
What's Changed
* fix(core): Fix deep nesting of runnables within traceables by jacoblee93 in https://github.com/langchain-ai/langchainjs/pull/8853

**Full Changelog**: https://github.com/langchain-ai/langchainjs/compare/langchain/core==0.3.74...langchain/core==0.3.75

langchain/community==0.3.55
What's Changed
* fix(community): bump firebase-admin devDependencies by hntrl in https://github.com/langchain-ai/langchainjs/pull/8861
* fix(community): URL encode paths in GitHub document loader by hntrl in https://github.com/langchain-ai/langchainjs/pull/8860

**Full Changelog**: https://github.com/langchain-ai/langchainjs/compare/langchain/community==0.3.54...langchain/community==0.3.55

langchain/anthropic==0.3.27
What's Changed
* fix(anthropic): opus-4.1 thinking by taiichiro-nagase in https://github.com/langchain-ai/langchainjs/pull/8856

New Contributors
* taiichiro-nagase made their first contribution in https://github.com/langchain-ai/langchainjs/pull/8856

**Full Changelog**: https://github.com/langchain-ai/langchainjs/compare/langchain==0.3.33...langchain/anthropic==0.3.27

1.0.0alpha.1

**Compare:** [https://github.com/langchain-ai/langchainjs/compare/langchain==0.3.30...langchain==1.0.0-alpha.1](https://github.com/langchain-ai/langchainjs/compare/langchain==0.3.30...langchain==1.0.0-alpha.1)

---

💥 Breaking changes

* **Require Node.js ≥ 20**
Langchain packages now require Node 20+ (`.nvmrc` is on Node 24 for development). Update your engines and CI accordingly. ([GitHub][1])

json
// package.json
{ "engines": { "node": ">=20" } }


* **Removed legacy subpath exports (cleaner surface area)**

* `langchain/schema/prompt_template` → **use** `langchain/prompts`. ([GitHub][2], [api.js.langchain.com][3])

 diff
 - import { PromptTemplate } from "langchain/schema/prompt_template";
 + import { PromptTemplate } from "langchain/prompts";
 
* `langchain/schema/query_constructor` → **use** `langchain/chains/query_constructor`. ([GitHub][2], [v03.api.js.langchain.com][4], [Langchain][5])

 diff
 - import type { AttributeInfo } from "langchain/schema/query_constructor";
 + import type { AttributeInfo } from "langchain/chains/query_constructor";
 
* `langchain/runnables/remote` export removed. If you used this entrypoint, migrate off this subpath (no 1:1 replacement export in `langchain` package). ([GitHub][6])
* `langchain/smith` export path removed from `langchain`. Use the separate `langsmith` package and opt-in (see below). ([GitHub][7])

* **Callbacks removed from `langchain`**
The `./callbacks` entrypoint is gone. Prefer LCEL observability (runnables), agent/tool messages, or provider-native hooks instead. ([GitHub][8])

diff
- import { ... } from "langchain/callbacks";
// Replace with runnable config / tracing via LangSmith (optional) or agent nodes.


---

✨ Features

* **`langchain` now exports most important user primitives**
The `langchain` package now exports the most important user primitives, including `tool`, `HumanMessage`, `AIMessage`, `SystemMessage`, `ToolNode`, `createAgent`, and more.

ts
import { tool, HumanMessage, createAgent } from "langchain";


* **`createAgent` is now part of core `langchain`**
The React-style agent lives under the `langchain` project (with examples + tests). Import directly from `langchain`. ([GitHub][9])

ts
import { createAgent, HumanMessage, tool } from "langchain";
import { z } from "zod";

const getWeather = tool({
 name: "getWeather",
 description: "Get current weather by city",
 schema: z.object({ city: z.string() }),
 func: async ({ city }) => `Sunny in ${city}`
});

const agent = await createAgent({
 // New: pass a model by name (string) or a model instance
 model: "claude-3-5-sonnet-20240620",
 tools: [getWeather],
 responseFormat: z.object({ answer: z.string() }),
});

const res = await agent.invoke(new HumanMessage("Weather in SF?"));
console.log(res);


Now you can pass in a **“model as string”** option to define the model to use. ([GitHub][10])

* **`ToolNode` exported from `langchain`**
Build agent graphs that execute tools as a node. This makes tool execution composable within LCEL/graph flows.

ts
import { ToolNode, tool, HumanMessage } from "langchain";

const fail = tool({
 name: "alwaysFails",
 description: "Demo failing tool",
 schema: {},
 func: async () => { throw new Error("Boom"); }
});

const node = new ToolNode([fail]);
const out = await node.invoke({ messages: [new HumanMessage("Try it")] });


* **Default tool-error handling in agents**
When `handleToolErrors` is **`true` (default)**, tool exceptions are caught and converted into a **`ToolMessage`** so the agent can recover. Set it to `false` to surface raw errors for strict workflows. ([GitHub][11])

ts
import { ToolNode } from "langchain/agents";

// default: handleToolErrors: true → returns a ToolMessage with error text
const forgiving = new ToolNode([/* tools */]);

// strict: throw on tool error
const strict = new ToolNode([/* tools */], { handleToolErrors: false });


---

🐛 Fixes

* **`langsmith` made optional**
LangSmith is no longer a hard dependency; the package is loaded dynamically only when you use features that need it. If you rely on eval/tracing/hub, add it explicitly:
`pnpm add langsmith` (or yarn/npm). ([GitHub][12])

* **Removed `js-tiktoken` dependency**
The package was dropped from deps; related types are sourced via the relevant provider packages (e.g. `langchain/openai`). If you had direct imports, adjust accordingly. ([GitHub][13])

---

🧹 Chores / Internal

* **New tsdown-based build system** (faster, simpler internal builds). ([GitHub][14])
* **Repo migrated to `pnpm`** (lockfile + scripts updated). ([GitHub][15])
* Rearranged packages and updated CI/workflows. ([GitHub][16])
* Removed experimental and unused files/exports (`./indexes`, `./document_transformers/openai_functions`, agents cleanup). User-visible API impact covered above via export removals; the rest is housekeeping to keep the surface tight. ([GitHub][18])
* Environment tests rewritten in TS and expanded to verify export maps across bundlers/runtimes. ([GitHub][19])

---

🧭 Migration quick-guide

1. **Node version**

* Set `engines.node` to `>=20` and update CI runners. ([GitHub][1])

2. **Imports / subpaths**

* `schema/prompt_template` → `langchain/prompts` (e.g., `PromptTemplate`). ([GitHub][2], [api.js.langchain.com][3])
* `schema/query_constructor` → `langchain/chains/query_constructor` (IR types, translators, etc.). ([GitHub][2], [v03.api.js.langchain.com][4], [Langchain][5])
* Remove `langchain/runnables/remote` usage; no longer exported. ([GitHub][6])
* Remove `langchain/smith` import; **install** and import from `langsmith` if needed. ([GitHub][7])

3. **Agents**

* Import prebuilt agents from `langchain` directly, e.g. `import { createAgent } from "langchain"`.
* You can pass **`model` as a model name string** to `createAgent`. ([GitHub][10])
  ts
  const agent = createAgent({
    model: "openai:gpt-4o-mini",
    tools: [/* tools */],
    responseFormat: z.object({ answer: z.string() }),
  });
  
* Use `ToolNode` to encapsulate tool execution in graphs.
* Decide on error policy: default soft-handling vs strict throws in `ToolNode` via `handleToolErrors`. ([GitHub][11])

4. **LangSmith & tokenization**

* Add `langsmith` explicitly if you use tracing/eval/hub. ([GitHub][12])
* If you previously relied on `js-tiktoken`, remove it from your app unless you need it directly. ([GitHub][13])

[1]: https://github.com/langchain-ai/langchainjs/pull/8773/files "break(*): bump required Node.js version to v20 by christian-bromann · Pull Request #8773 · langchain-ai/langchainjs · GitHub"
[2]: https://github.com/langchain-ai/langchainjs/pull/8624/files "chore(langchain): remove `./schema/*` export from `langchain` package by christian-bromann · Pull Request #8624 · langchain-ai/langchainjs · GitHub"
[3]: https://api.js.langchain.com/classes/langchain_core_prompts.PromptTemplate.html?utm_source=chatgpt.com "Class PromptTemplate<RunInput, PartialVariableName>"
[4]: https://v03.api.js.langchain.com/modules/langchain.chains_query_constructor.html?utm_source=chatgpt.com "Module chains/query_constructor"
[5]: https://js.langchain.com/docs/how_to/query_constructing_filters/?utm_source=chatgpt.com "How to construct filters"
[6]: https://github.com/langchain-ai/langchainjs/pull/8623/files "chore(langchain): remove `./runnables/remote` export from `langchain` package by christian-bromann · Pull Request #8623 · langchain-ai/langchainjs · GitHub"
[7]: https://github.com/langchain-ai/langchainjs/pull/8626/files "chore(langchain): remove `./smith` export path by christian-bromann · Pull Request #8626 · langchain-ai/langchainjs · GitHub"
[8]: https://github.com/langchain-ai/langchainjs/pull/8605/files "chore(v1): remove callbacks from langchain by christian-bromann · Pull Request #8605 · langchain-ai/langchainjs · GitHub"
[9]: https://github.com/langchain-ai/langchainjs/pull/8789/files "feat(agents): migrate createAgent to core LangChain project by christian-bromann · Pull Request #8789 · langchain-ai/langchainjs · GitHub"
[10]: https://github.com/langchain-ai/langchainjs/pull/8806/files "feat(agents): allow createReactAgent to take in a model as string property by christian-bromann · Pull Request #8806 · langchain-ai/langchainjs · GitHub"
[11]: https://github.com/langchain-ai/langchainjs/pull/8810/files "fix(langchain): handle tool errors when handleToolErrors is set to `true` (default) by christian-bromann · Pull Request #8810 · langchain-ai/langchainjs · GitHub"
[12]: https://github.com/langchain-ai/langchainjs/pull/8708/files "fix(langchain): make `langsmith` an optional dependency by christian-bromann · Pull Request #8708 · langchain-ai/langchainjs · GitHub"
[13]: https://github.com/langchain-ai/langchainjs/pull/8712/files "fix(langchain): remove `js-tiktoken` dependency by christian-bromann · Pull Request #8712 · langchain-ai/langchainjs · GitHub"
[14]: https://github.com/langchain-ai/langchainjs/pull/8604 "chore(v1): remove file system cache from langchain by christian-bromann · Pull Request #8604 · langchain-ai/langchainjs · GitHub"
[15]: https://github.com/langchain-ai/langchainjs/pull/8608 "chore: rearrange packages by hntrl · Pull Request #8608 · langchain-ai/langchainjs · GitHub"
[16]: https://github.com/langchain-ai/langchainjs/pull/8613 "fix(build): change script name to avoid double compilation by christian-bromann · Pull Request #8613 · langchain-ai/langchainjs · GitHub"
[17]: https://github.com/langchain-ai/langchainjs/pull/8740/files "chore(langchain): v1 clean up `./document_transformers/openai_functions` by christian-bromann · Pull Request #8740 · langchain-ai/langchainjs · GitHub"
[18]: https://github.com/langchain-ai/langchainjs/pull/8741/files "chore(langchain) v1 clean up `./indexes` by christian-bromann · Pull Request #8741 · langchain-ai/langchainjs · GitHub"
[19]: https://github.com/langchain-ai/langchainjs/pull/8614 "refactor: rewrite environment tests with TypeScript test runner and package verification by christian-bromann · Pull Request #8614 · langchain-ai/langchainjs · GitHub"
[20]: https://github.com/langchain-ai/langchainjs/pull/8599 "chore(internal): add new package for tsdown build by christian-bromann · Pull Request #8599 · langchain-ai/langchainjs · GitHub"


langchain/core==1.0.0-alpha.2
What's Changed
* chore(langchain): rebase main changes by hntrl in https://github.com/langchain-ai/langchainjs/pull/8811
* fix(langchain): port and export AgentRuntime by christian-bromann in https://github.com/langchain-ai/langchainjs/pull/8829

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