mmp

name	mmp
description	Use this skill when you need to communicate with MCP servers through the CLI interface.

MMP

mmp is a CLI tool for talking to multiple MCP servers from one config file.

Use When

• You need one CLI entrypoint for several MCP servers.
• You want persistent session handles for stateful MCP calls.
• You need to call MCP servers over http, sse, or stdio.

Config

Create a TOML file like:

[servers.demo-http]
transport = "http"
url = "http://127.0.0.1:8080/mcp"

[servers.demo-sse]
transport = "sse"
url = "http://127.0.0.1:8081/sse"

[servers.demo-stdio]
transport = "stdio"
command = ["python", "-m", "some_server"]

stdio servers must define command. http and sse servers must define url.

Workflow

1. Load a config:

mmp load gateway.toml

2. List servers:

mmp ls

3. Create a session and call a method:

mmp call demo-http tools/list

4. Reuse the returned session id:

mmp call --id <session-id> resources/list

5. Inspect or remove sessions:

mmp ps
mmp rm --id <session-id>
mmp rm --all

Notes

• mmp auto-initializes MCP sessions before non-initialize calls.
• The stdio transport uses Content-Length framing, not newline-delimited JSON.
• Stdio servers must keep protocol output on stdout and logs on stderr.