MCPJam Inspector
Test MCP servers with an interactive playground, OAuth debugging and evaluation tools before releasing changes.
About this listing
MCPJam Inspector is a development and testing application for MCP servers. Its playground lets developers call tools and inspect requests and responses, while the OAuth debugger helps trace authentication failures. Evaluation suites score server behaviour and can run in CI to catch regressions before release. The product offers web, desktop and local ways to work. A free plan provides a limited daily credit allowance, with paid plans adding usage and longer trace history. Hosted model usage consumes credits; bringing your own model API key can incur separate provider charges.