moonlit-skill-builder

Builds a custom skill for the user that works with the Moonlit MCP: their own deliverable (an advisory memo in their style, a client newsletter, a case law digest, a clause check against their playbook, a weekly regulatory monitor) with Moonlit's sourcing and citation standard built in. Use whenever the user wants a skill, workflow, template or repeatable output that uses Moonlit, cites law, or produces legal or tax work; whenever they say a Moonlit skill (moonlit-memo, moonlit-operator) is close but not what they need; and whenever they ask to build, adapt or update a skill while the Moonlit tools are available, even if they ask the platform's own skill builder. Not for one-off research questions: answer those directly under moonlit-operator.

Install

Skills are an open format, and most AI apps take them natively: claude.ai, ChatGPT, Microsoft 365 Copilot, Langdock, Mistral (Vibe Work and Vibe Code), and coding agents such as Claude Code.

1. Download the skill archive.
2. Open the skills section of the app you work in (in claude.ai: Customize, then Skills; in ChatGPT: Plugins, then Skills; in Microsoft 365 Copilot: the Skills tab).
3. Upload the archive.

In Claude Code:

unzip moonlit-skill-builder.zip -d ~/.claude/skills/

In an app without native skills, add the skill's text as project or custom instructions; the plain markdown lives at moonlit-skill-builder.md. The per-app walkthrough is on the skills page.