mcp-probe

Interactive MCP protocol debugger and testing TUI

TLDR

Debug an MCP server via stdio

$ mcp-probe debug --stdio [command]

Debug via HTTP+SSE

$ mcp-probe debug --http-sse [url]

Debug via Streamable HTTP

$ mcp-probe debug --streamable-http [url]

Run compliance validation

$ mcp-probe validate --http-sse [url] --suite all

mcp-probe is an interactive debugger and testing toolkit for Model Context Protocol (MCP) servers. The TUI provides automatic discovery of tools, resources, and prompts, advanced fuzzy search, and multiple view modes for inspecting server responses.It supports compliance testing with report generation in HTML, Markdown, JSON, and YAML formats, making it suitable for CI/CD pipeline integration.

PARAMETERS

debug

Launch interactive TUI debugger for an MCP server.

validate

Run automated compliance tests against an MCP server.

--stdio COMMAND

Connect to MCP server via stdio transport.

--http-sse URL

Connect to MCP server via HTTP+SSE transport.

--streamable-http URL

Connect to MCP server via Streamable HTTP transport.

--suite SUITE

Compliance test suite to run (all, initialization, capabilities, security, performance).

--format FORMAT

Output format for validation reports (html, markdown, json, yaml).

INSTALL

yay -S mcp-probe

CAVEATS

Requires a running MCP server to connect to. Transport support depends on the server's implementation.

HISTORY

mcp-probe was created by conikeec and is written in Rust using the Ratatui library.