Tests and evaluates MCP servers and MCP apps for developers, with a playground, OAuth debugger, cross-client evals, and CI checks, via web app, npx inspector, CLI, and SDK.
Use it now
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Try this first
Ask your assistant, with MCPJam connected:
- Server Inspection
Use MCPJam to probe MCP server connectivity and capabilities: ‹what you need›
- OAuth Conformance
Use MCPJam to test an MCP server's OAuth across protocol versions: ‹what you need›
- Cross-Model Evals
Use MCPJam to run test cases: ‹what you need›
Connect it over MCP
Connect MCPJam as an MCP server, following its setup instructions at https://github.com/MCPJam/inspector
Its page: github.com/MCPJam/inspector
Install the CLI
Install it as its own instructions say.
Its page: github.com/MCPJam/inspector
Call the API
Auth None needed
Its page: github.com/MCPJam/inspector
Compare
Press Compare to add it to the tray at the bottom of the window, then pick up to 2 others anywhere on the site.
- Access
- APICLIMCP
- Auth
- None
- Skills
- 4
Skills
Server Inspection
Probes, diagnoses, and exports MCP server connectivity and capabilities, and lists or calls tools, resources, and prompts from the CLI.
OAuth Conformance
Tests an MCP server's OAuth across protocol versions with Dynamic Client Registration, pre-registration, and Client ID Metadata Documents.
Cross-Model Evals
Runs test cases with expected tool calls across multiple LLMs and tracks accuracy over time to catch MCP server regressions.
CI Pipeline Checks
Runs MCP health checks, conformance suites, and evals on every pull request in GitHub Actions, GitLab CI, and other CI systems.
