Function Creator

If you're building with Convex, this generates the three types of backend functions you need: queries for reads, mutations for writes, and actions for external API calls or long-running tasks. It handles the boilerplate around argument validation, auth checks, and ownership patterns so you don't have to look up the validator syntax every time. The skill knows mutations get automatic retries and transactional guarantees, while actions that need Node.js APIs require the "use node" directive in separate files. Solid if you're tired of copy-pasting function skeletons or you keep forgetting which function type can call what.

Install to Claude Code

npx -y skills add get-convex/agent-skills --skill function-creator --agent claude-code