Overview

MCPJam inspector is a testing and debugging platform for Model Context Protocol (MCP) servers

The inspector lets you test whether or not you built your MCP server correctly. You can test your server’s tools, prompts, OAuth implementation, and more. If your server works on MCPJam, it’ll work with any LLM client.

Quick Start

Start up the MCPJam inspector with a bash command

Start MCPJam Inspector

Start testing your MCP servers immediately

MCPJam Inspector can

• Test your MCP tools, prompts, and resources. Manually trigger your server features to quickly iterate on its development.
• Validate your OAuth 2 implementation with the OAuth step by step feature.
• Check your MCP server’s behavior against different LLM’s in the LLM playground. Simulate how your server would behave in environments like Claude, ChatGPT, Gemini, and more.
• Debug JSON-RPC messages sent back and forth between your server and client.

Key Features

Feature	Description
Full MCP Spec Compliance	Test your MCP server’s tools, resources, prompts, elicitation, and OAuth 2. MCPJam is compliant with the latest MCP specs.
All transports supported	Connect to any MCP server. MCPJam inspector supports STDIO, SSE, and Streamable HTTP transports.
LLM Playground	Integrated chat playground with OpenAI, Anthropic Claude, and Ollama model support. Test how your MCP server would behave against an LLM
Debugging	Comprehensive logging, tracing, and error reporting for MCP server development
Developer Experience	Connect to multiple MCP servers. Save configurations. Upgraded UI/UX for modern dev experience.