A platform to chat, inspect, debug, and evaluate MCP servers, MCP apps, and ChatGPT apps.
MCPJam Inspector is easy to set up with strong trust signals. Check agent compatibility and use-case fit before adding it to your workflow.
Repository setup guidance
gh repo view MCPJam/inspector --webOpen the official repository or website.
Check the README for package manager, auth, and platform requirements.
Try it in a small test task inside your agent workflow.
MCPJam Inspector is a tool for developers building AI applications. It lets you test and debug your AI servers, chat with AI models, and evaluate their performance. You can use it online or install it locally.
MCPJam Inspector is a comprehensive development platform for MCP servers, MCP apps, and ChatGPT apps. It provides a suite of tools for debugging, testing, and evaluating AI integrations. Key features include a chat interface to interact with any LLM, a debugger to inspect every JSON-RPC message and OAuth exchange, an inspector to explore server tools/resources/prompts, an evaluation system to run evals across multiple LLMs and track accuracy over time, a CLI for terminal-based probing and doctor checks, an SDK for programmatic inspections and assertions, and CI/CD integration via GitHub Actions. It supports both hosted web app (no install) and local desktop/terminal versions. MCPJam aims to replace ngrok and paid subscriptions for MCP development.
Strong trust signals; still review the README and permissions before production use.
Last commit was about 51 days ago.
1993 GitHub stars indicate community interest.
98 open issues signal maintenance load.
NOASSERTION license detected.
Debugging MCP server interactions by inspecting JSON-RPC messages and OAuth flows.
Chatting with various LLMs to test tool calls and context handling.
Running evaluations across multiple LLMs to catch regressions early.
Integrating MCP testing into CI/CD pipelines with GitHub Actions.
Exploring and documenting server capabilities like tools, resources, and prompts.
When using the hosted web app, MCP server URLs are sent to MCPJam servers; ensure no sensitive data is exposed.
Local installation is recommended for debugging internal or STDIO servers to avoid data leakage.
1,993
Stars
236
Forks
98
Issues
NOASSERTION
License
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A platform to chat, inspect, debug, and evaluate MCP servers, MCP apps, and ChatGPT apps.
MCP server developers, AI application developers building on MCP, DevOps engineers integrating MCP into CI/CD
The setup section provides repository-level starting guidance, not a guarantee of an independently verified installation. Check the official README and release notes.
When using the hosted web app, MCP server URLs are sent to MCPJam servers; ensure no sensitive data is exposed. Local installation is recommended for debugging internal or STDIO servers to avoid data leakage.
Similar or complementary options to evaluate include EvoSuite, Argos, TestZeus Hercules.
Jun 6, 2026
2 security/trust notes recorded.
Setup difficulty is 2/5.