Cletus plugins

Build plugins for Cletus, the desktop AI assistant for engineering and manufacturing teams, and publish them in the Eidonix plugin store.

Status

• Ready now: the specification, the worker SDK (sdk/pluginsdk) and the cletus-plugin tool, which creates a plugin, checks it the way the store does and runs it under a test host. You can build and test a worker and its chat tools today.
• Later releases:
  • screens;
  • more host services (AI models, vision, speech, camera and microphone, saved connections, a secret store);
  • loading your development build into Cletus itself;
  • store submissions.

What a plugin is

A plugin is a Go program (the worker) that adds chat tools Cletus's AI can use, and services other plugins can call. Through the host it can:

• open and save files the user chooses;
• read and write the user's shared folders;
• start background Cletus runs over the user's files;
• connect to machines, databases and services the user sets up, or to servers it names.

Start here

If you work with a coding agent (Claude Code, Codex or similar), point it at this repository and tell it what you want to build. AGENTS.md holds the rules it must follow, and it reads the rest from there.

If you work by hand, read in this order:

1. docs/specification.md: the package, plugin.json, permissions, the worker and services.
2. docs/host-api.md: every host method.
3. docs/style-guide.md: how Cletus plugins read and behave.
4. docs/patterns.md: how to build common kinds of plugin.
5. docs/submission.md and docs/review-checklist.md: how publishing will work.

Tools

Needs Go 1.24 or later.

go install git.eidonix.com/eidonix/cletus-plugins/sdk/cmd/cletus-plugin@latest

cletus-plugin new acme.gauge-check                  # a working plugin from the template
cd gauge-check
cletus-plugin check                                 # the store's automated checks
cletus-plugin run -files ./testdata tools           # list the chat tools
cletus-plugin run -files ./testdata invoke gauge_check_hello '{"name":"Ada"}'

run starts your worker under a test host that answers host calls the way Cletus does, enforces your declared permissions, and prints every host call your worker makes.

Publishing

Plugins reach users only through the Eidonix plugin store, and Cletus installs nothing else. You'll submit source code; Eidonix builds it, checks it, reviews it and signs it. See docs/submission.md.

Licence

Apache License 2.0 (LICENSE). The names Cletus and Eidonix are not licensed.