Arize-ai/phoenix
Phoenix is an open-source AI observability platform for experimentation, evaluation, and troubleshooting of large language model applications, supporting multiple frameworks and LLM providers with flexible deployment options.
Awesome MCP › Testing & Debugging
tesla0225/mcp-create
MCP Create Server is a meta-server: it is itself an MCP server, and its tools create and operate other MCP servers. A client can supply TypeScript source for a new server, have it launched as a child process, then call the tools that server publishes through the parent — all without editing a client configuration file or restarting anything. Further tools update a running server's code and restart it, and remove servers that are no longer needed. The effect is a self-extending tool surface: when an assistant needs a capability nothing provides, it can write the server, load it and use it in the same session, instead of asking the user to install something. Currently only TypeScript is supported, with JavaScript and Python listed as planned. The security consequence is the obvious one and the README's deployment advice reflects it: this executes model-authored code, so Docker is the recommended way to run it, and a container is the appropriate boundary. Manual installation from a git clone is also documented, along with the Claude Desktop configuration entry. The audience is people experimenting with self-extending agents and prototyping MCP servers, where the ability to iterate on server code without a restart cycle is the point.
https://github.com/tesla0225/mcp-create
Also in Testing & Debugging
modelcontextprotocol/inspector
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MCPJam/inspector
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Arize-ai/openinference
OpenInference is an open-source extension of OpenTelemetry that provides comprehensive tracing and observability for AI applications, including support for the Model Context Protocol (MCP).
LSTM-Kirigaya/openmcp-client
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workbackai/mcp-nodejs-debugger
MCP Node.js Debugger is an MCP server that enables AI coding assistants like Cursor and Claude Code to debug Node.js applications at runtime by setting breakpoints and inspecting runtime state.
modelscope/MCPBench
MCPBench is an open-source evaluation framework for benchmarking Model Context Protocol (MCP) servers across Web Search, Database Query, and GAIA tasks, measuring accuracy, latency, and token consumption under consistent LLM and agent settings.
hyprmcp/jetski
Open source MCP analytics and authentication platform that deploys an OAuth gateway in front of MCP servers and aggregates prompt analytics, generated setup instructions and real time debug logs.