io.github.nagarjunr/mqtt

MQTT

Is the MQTT MCP server down? No. It is up and needs env, probed 2026-10-27.

MCP server for MQTT 5.0 brokers (publish, subscribe, topic discovery).

needs env probed 2026-11-14 · unchanged since 2026-10-27

MCP error -32000: Connection closed
ValueError: invalid literal for int() with base 10: 'mcpcost-placeholder'
  File "/work/uv/mqtt5-mcp-server/lib/python3.12/s

Run it: uvx mqtt5-mcp-server@0.1.0 (stdio, probed in a container with the network off)
Host: pypi.org
Repository: https://github.com/nagarjunr/iot-mcp-servers
Registry: active, updated 2026-07-24 · registry entry

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Badge for the README

The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.

Atom feed

A mail when this server changes

Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.

For the publisher

The server exits because an environment variable is missing. The probe starts the package without secrets. A server that starts without secrets and asks for them on the first tool call is measured.