mcprobe

You're building an MCP server. You want to see what tools it exposes, test a call, debug a schema. You don't want to wire up a full client just to do that.

mcprobe is the missing curl for MCP. Connect to any server, list its tools, call them, inspect schemas. From your terminal.

Install

pip install mcprobe

Usage

List the tools on a server:

mcprobe tools http://localhost:8100/sse

┌──────────────────────────────────────────────────┐
│  #  │ Tool              │ Description            │
├──────────────────────────────────────────────────┤
│  1  │ health            │ Full system status     │
│  2  │ query             │ Run SELECT queries     │
│  3  │ cortex_signal     │ Log observations       │
│ ... │                   │                        │
└──────────────────────────────────────────────────┘
70 tools available

Inspect a tool's schema:

mcprobe inspect http://localhost:8100/sse cortex_signal

Call a tool:

mcprobe call http://localhost:8100/sse health
mcprobe call http://localhost:8100/sse query -a '{"sql": "SELECT count(*) FROM clients"}'

Check a server is alive:

mcprobe ping http://localhost:8100/sse

Commands

Command	What it does
tools	List all tools (add -v for schemas)
inspect	Full schema for one tool
call	Call a tool with JSON args
ping	Check the server responds

Transports

mcprobe auto-detects SSE (/sse) and streamable HTTP (/mcp) endpoints. No flags needed.

Why

MCP servers are everywhere now. There was no quick way to look inside one without reading source or writing a client. This is that quick way.

License

MIT