release: 0.12.0

[stainless-app]

Automated Release PR

0.12.0 (2025-12-02)

Full Changelog: v0.11.1...v0.12.0

Features

• mcp: add detail field to docs search tool (a4a3478)
• mcp: enable optional code execution tool on http mcp servers (579b63d)
• mcp: return logs on code tool errors (f8cc9b0)

Bug Fixes

• mcpb: pin @anthropic-ai/mcpb version (fc022b2)
• mcp: return tool execution error on api error (5ae2a33)
• mcp: return tool execution error on jq failure (719a2bc)

Chores

• client: fix logger property type (73a6ad5)
• internal: codegen related update (d58f59b)
• internal: codegen related update (47ef370)
• internal: grammar fix (it's -> its) (cbeea36)
• mcp code tool explicit error message when missing a run function (45f0ec4)
• mcp: add friendlier MCP code tool errors on incorrect method invocations (08e1eac)
• mcp: add line numbers to code tool errors (51fc353)
• mcp: clarify http auth error (39fab03)
• mcp: upgrade jq-web (5f375e8)
• use structured error when code execution tool errors (bb4ba8a)

Documentation

• mcp: add a README button for one-click add to Cursor (afbeeb5)
• mcp: add a README link to add server to VS Code or Claude Code (6042a69)
• sdk: specify example params (00ec4d8)

---

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🔗 Stainless website
📚 Read the docs
🙋 Reach out for help or questions

[stainless-app]

🧪 Testing

    To try out this version of the SDK, run:
    ```
    npm install 'https://pkg.stainless.com/s/isaacus-typescript/f8cc9b0afc5365abe559f07c85883895ee2f4900/dist.tar.gz'
    ```

    _Expires: Thu, 01 Jan 2026 06:26:10 GMT_