function-creator

SKILL.md

Generate type-safe Convex queries, mutations, and actions with built-in validation, authentication, and error handling.

Supports three function types: queries (read-only, cached), mutations (transactional writes with automatic retries), and actions (external APIs, long-running tasks)

Enforces argument and return type validation via Convex validators; includes authentication checks and authorization patterns for ownership verification

Actions requiring Node.js APIs (SDKs, crypto) must use "use node" directive and live in separate files from queries and mutations

Provides complete examples covering secure queries with auth, validated mutations, external API calls, and internal backend-only functions with a pre-flight checklist

Convex Function Creator

Generate secure, type-safe Convex functions following all best practices.

When to Use

Creating new query functions (read data)

Creating new mutation functions (write data)

Creating new action functions (external APIs, long-running)

Adding API endpoints to your Convex backend

Function Types

Queries (Read-Only)

Can only read from database

Cannot modify data or call external APIs

Cached and reactive

Run in transactions