Mcprobe

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

Source & license

This open-source MCP server is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: AlexlaGuardia
• Source: AlexlaGuardia/mcprobe
• License: MIT
• Homepage: https://pypi.org/project/mcprobe/

Install and usage instructions live in the source repository linked above.