diff --git a/src/agents/definitions/pi.ts b/src/agents/definitions/pi.ts
deleted file mode 100644
index 94ed140..0000000
--- a/src/agents/definitions/pi.ts
+++ /dev/null
@@ -1,30 +0,0 @@
-import { join } from "node:path";
-import { homedir } from "node:os";
-import type { AgentDefinition } from "../types.js";
-import { UnsupportedFeature } from "../errors.js";
-import { envRecord, httpServer } from "./helpers.js";
-
-const pi: AgentDefinition = {
-  id: "pi",
-  displayName: "Pi",
-  configDir: ".pi",
-  skillsParentDir: ".pi",
-  userSkillsParentDirs: [join(homedir(), ".pi", "agent")],
-  mcp: {
-    filePath: ".pi/mcp.json",
-    rootKey: "mcpServers",
-    format: "json",
-    shared: false,
-  },
-  serializeServer(s) {
-    if (s.url) return httpServer(s);
-    const env = envRecord(s.env, (k) => `\${${k}}`);
-    return [s.name, { command: s.command, args: s.args ?? [], ...(env && { env }) }];
-  },
-  hooks: undefined,
-  serializeHooks() {
-    throw new UnsupportedFeature("pi", "hooks");
-  },
-};
-
-export default pi;
diff --git a/src/agents/paths.test.ts b/src/agents/paths.test.ts
index 9f86177..e2a03ab 100644
--- a/src/agents/paths.test.ts
+++ b/src/agents/paths.test.ts
@@ -38,12 +38,6 @@ describe("getUserMcpTarget", () => {
     expect(t.shared).toBe(true);
   });
 
-  it("pi targets ~/.pi/agent/mcp.json (not shared)", () => {
-    const t = getUserMcpTarget("pi");
-    expect(t.filePath).toBe(join(home, ".pi", "agent", "mcp.json"));
-    expect(t.shared).toBe(false);
-  });
-
   it("throws for unknown agent", () => {
     expect(() => getUserMcpTarget("emacs")).toThrow("Unknown agent");
   });
@@ -83,10 +77,4 @@ describe("skill discovery paths", () => {
     expect(agent.skillsParentDir).toBeUndefined();
     expect(agent.userSkillsParentDirs).toBeUndefined();
   });
-
-  it("pi needs project and user symlinks", () => {
-    const agent = getAgent("pi")!;
-    expect(agent.skillsParentDir).toBe(".pi");
-    expect(agent.userSkillsParentDirs).toEqual([join(home, ".pi", "agent")]);
-  });
 });
diff --git a/src/agents/paths.ts b/src/agents/paths.ts
index ffa17e7..a69e48c 100644
--- a/src/agents/paths.ts
+++ b/src/agents/paths.ts
@@ -25,8 +25,6 @@ export function getUserMcpTarget(agentId: string): UserMcpTarget {
       return { filePath: vscodeMcpPath(), shared: false };
     case "opencode":
       return { filePath: join(home, ".config", "opencode", "opencode.json"), shared: true };
-    case "pi":
-      return { filePath: join(home, ".pi", "agent", "mcp.json"), shared: false };
     default:
       throw new Error(`Unknown agent for user-scope MCP: ${agentId}`);
   }
diff --git a/src/agents/registry.test.ts b/src/agents/registry.test.ts
index 10e901a..d237ce4 100644
--- a/src/agents/registry.test.ts
+++ b/src/agents/registry.test.ts
@@ -22,15 +22,14 @@ const STDIO_NO_ENV: McpDeclaration = {
 };
 
 describe("allAgentIds", () => {
-  it("returns all 6 agents", () => {
+  it("returns all 5 agents", () => {
     const ids = allAgentIds();
     expect(ids).toContain("claude");
     expect(ids).toContain("cursor");
     expect(ids).toContain("codex");
     expect(ids).toContain("vscode");
     expect(ids).toContain("opencode");
-    expect(ids).toContain("pi");
-    expect(ids).toHaveLength(6);
+    expect(ids).toHaveLength(5);
   });
 });
 
@@ -175,43 +174,3 @@ describe("opencode serializer", () => {
     expect(agent.skillsParentDir).toBeUndefined();
   });
 });
-
-describe("pi serializer", () => {
-  const agent = getAgent("pi")!;
-
-  it("serializes stdio server", () => {
-    const [name, config] = agent.serializeServer(STDIO_SERVER);
-    expect(name).toBe("github");
-    expect(config).toEqual({
-      command: "npx",
-      args: ["-y", "@modelcontextprotocol/server-github"],
-      env: { GITHUB_TOKEN: "${GITHUB_TOKEN}" },
-    });
-  });
-
-  it("serializes http server natively", () => {
-    const [name, config] = agent.serializeServer(HTTP_SERVER);
-    expect(name).toBe("remote-api");
-    expect(config).toEqual({
-      url: "https://mcp.example.com/sse",
-      headers: { Authorization: "Bearer tok" },
-    });
-  });
-
-  it("omits env when empty", () => {
-    const [, config] = agent.serializeServer(STDIO_NO_ENV);
-    expect(config).toEqual({ command: "mcp-server", args: [] });
-    expect(config).not.toHaveProperty("env");
-  });
-
-  it("needs project and user symlinks for skills", () => {
-    expect(agent.skillsParentDir).toBe(".pi");
-    expect(agent.userSkillsParentDirs).toHaveLength(1);
-    expect(agent.userSkillsParentDirs![0]).toMatch(/\.pi[/\\]agent$/);
-  });
-
-  it("does not support hooks", () => {
-    expect(agent.hooks).toBeUndefined();
-    expect(() => agent.serializeHooks([])).toThrow();
-  });
-});
diff --git a/src/agents/registry.ts b/src/agents/registry.ts
index 25cdee9..8bffe05 100644
--- a/src/agents/registry.ts
+++ b/src/agents/registry.ts
@@ -4,9 +4,8 @@ import cursor from "./definitions/cursor.js";
 import codex from "./definitions/codex.js";
 import vscode from "./definitions/vscode.js";
 import opencode from "./definitions/opencode.js";
-import pi from "./definitions/pi.js";
 
-const ALL_AGENTS: AgentDefinition[] = [claude, cursor, codex, vscode, opencode, pi];
+const ALL_AGENTS: AgentDefinition[] = [claude, cursor, codex, vscode, opencode];
 
 const AGENT_REGISTRY = new Map<string, AgentDefinition>(
   ALL_AGENTS.map((a) => [a.id, a]),