MCPJam Inspector
An open-source testing and evaluation platform for MCP servers, MCP apps and ChatGPT apps.
Sources and review
Checked against public documentation on . Suitability guidance is our editorial judgment; this is not a performance benchmark or an endorsement.
Server authors checking that their MCP server behaves the same in ChatGPT, Claude and Cursor.
About MCPJam Inspector
MCPJam lets MCP server developers test tools, prompts, resources and authorisation interactively across 16 client configurations and more than 170 models, with traces of every JSON-RPC message and OAuth exchange. It runs evals on test cases to catch cross-client differences and gate regressions in CI. It runs locally or as a hosted app; most code is Apache-2.0, while its evaluation services carry a separate licence.
MCPJam Inspector is listed in this index written primarily in TypeScript, with 2.3k stars on GitHub. Its latest recorded repository push was in November 2026; that is not an ASE editorial review date.
npx @mcpjam/inspector@latestMCPJam Inspector and related category tools
Alternatives guide →| Record | Stars | Pricing | ||
|---|---|---|---|---|
| MCPJam Inspectorthis listing | 2.3k | TypeScript | — | Costs not checked |
| MCP Inspector (official) | 11k | TypeScript | — | Free |
| MCP Tools (mcptools) | 1.6k | Go | MIT | Costs not checked |
| MCPHub | 2.6k | TypeScript | Apache-2.0 | Costs not checked |
| MCP Bundles (MCPB) | 2.2k | TypeScript | — | Costs not checked |
