Extending Synthex

Build your own agents and commands alongside Synthex. The plugin shape is plain markdown + YAML — no SDK, no compiled runtime. Ship project-specific extensions as their own marketplace plugin, or contribute upstream to bluminal/lumenai.

• Authoring agents

  Write your own Claude Code sub-agents alongside Synthex — identity, scope, model selection, the load-bearing PURELY ADVISORY clause, findings format.

• Authoring commands

  Write your own slash commands — parameters, workflow style, sub-agent delegation, the Critical Requirements pattern, compositional examples.