MCPJam Inspector shipped an update

MCPJam Inspector, an open-source TypeScript platform for testing and evaluating MCP servers, MCP apps and ChatGPT apps, was last updated in September 2026 and holds 2.2k stars on GitHub. The tool 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, and runs evals on test cases to catch cross-client differences and gate regressions in CI. Most of its code is Apache-2.0 licensed, while its evaluation services carry a separate licence, and it runs locally or as a hosted app.

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 an open-source project written primarily in TypeScript, with 2.2k stars on GitHub. It was last updated in September 2026. npx @mcpjam/inspector@latest Make your product part of the discovery. Explore advertising MCPJam Inspector vs. the alternatives All 163 alternatives → https://agentsearchengine.app/alternatives/mcpjam-inspector | Record | Stars | Pricing | | | |---|---|---|---|---| | MCPJam Inspectorthis listing | 2.2k | TypeScript | — | Open source | | MCP Reference Servers https://agentsearchengine.app/agents/mcp-reference-servers | 91k | TypeScript | MIT AND Apache-2.0 | Open source | | context7 https://agentsearchengine.app/agents/context7 | 62k | TypeScript | MIT | Open source | | chrome-devtools-mcp https://agentsearchengine.app/agents/chrome-devtools-mcp | 53k | TypeScript | Apache-2.0 | Open source | | Playwright MCP https://agentsearchengine.app/agents/playwright-mcp | 37k | TypeScript | Apache-2.0 | Open source | | github-mcp-server https://agentsearchengine.app/agents/github-mcp-server | 33k | Go | MIT | Open source |