Case study

catlink-local: reconstructing CATLINK Open X local control

catlink-local reconstructs the CATLINK Open X litter box's login and MQTT exchanges for local Home Assistant use. Python services answer its login request, decode heartbeats and visits, and bridge state to Mosquitto; protocol notes distinguish confirmed fields from hypotheses.

Targets: Protocol
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-08

Stars: 0
Last commit: 2026-11-08
Language: Python
License (GitHub): MIT

GitHub data as of 2026-11-09

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Requirements & limits

Prerequisites: A CATLINK Open X C08 with firmware 04.22, a Linux host, local DNS routing, Mosquitto and Home Assistant are used in the documented setup.
Testing evidence: The author reports testing one box and one firmware for days; many protocol fields remain unconfirmed.
Limits: Commands are disabled by default and require deliberate setup and supervision around moving parts.
License: Licensed under MIT.

Cite

BibTeX

@misc{catlink-local-case,
  title = {{catlink-local: reconstructing CATLINK Open X local control}},
  howpublished = {\url{https://github.com/yorgossot/catlink-local}},
  url = {https://github.com/yorgossot/catlink-local},
  urldate = {2026-11-08},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/catlink-local-case/}}
}

Plain text

catlink-local: reconstructing CATLINK Open X local control. https://github.com/yorgossot/catlink-local (accessed 2026-11-08). Awesome REA entry: https://awesomerea.org/resources/catlink-local-case/

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About this entry

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Primary sources

README.md GitHub · yorgossot/catlink-local · Revision 78f275e
docs/PROTOCOL.md GitHub · yorgossot/catlink-local · Revision 78f275e