A debugging and development tool for MCP servers with hot-swapping, session recording, and automated playback testing
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Project description
MCP Debug
A debugging and development tool for Model Context Protocol (MCP) servers.
Installation
# Run directly with uvx (recommended)
uvx mcp-debug --help
# Or install with pip
pip install mcp-debug
mcp-debug --help
Features
- Hot-Swap Development - Replace server binaries without disconnecting MCP clients
- Session Recording & Playback - Record JSON-RPC traffic for debugging and testing
- Development Proxy - Multi-server aggregation with tool prefixing
- Dynamic Server Management - Add/remove servers at runtime
Quick Start
# Start proxy with config
uvx mcp-debug --proxy --config config.yaml
# Record a session
uvx mcp-debug --proxy --config config.yaml --record session.jsonl
# Playback recorded requests
uvx mcp-debug --playback-client session.jsonl | ./your-mcp-server
Documentation
See the GitHub repository for full documentation.
License
MIT License
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