[0.0.15] - 2025-06-06
Added
- 🔐 Support for Custom Headers in SSE and Streamable Http MCP Connections: You can now pass custom HTTP headers (e.g., for authentication tokens or trace IDs) when connecting to SSE or streamable_http servers—enabling seamless integration with remote APIs that require secure or contextual headers.
- 📘 MCP Server Instructions Exposure: mcpo now detects and exposes instructions output by MCP tools, bringing descriptive setup guidelines and usage help directly into the OpenAPI schema—so users, UIs, and LLM agents can better understand tool capabilities with zero additional config.
- 🧪 MCP Exception Stacktrace Printing During Failures: When a connected MCP server raises an internal error, mcpo now displays the detailed stacktrace from the tool directly in the logs—making debugging on failure dramatically easier for developers and MLops teams working on complex flows.
Fixed
- 🧽 Corrected Handling of Underscore Prefix Parameters in Pydantic Modes: Parameters with leading underscores (e.g. _token) now work correctly without conflict or omission in auto-generated schemas—eliminating validation issues and improving compatibility with tools relying on such parameter naming conventions.