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KitCursor, Claude Code · 5 steps · 5 resources

Backend API Kit

Everything an agent needs to design and ship a typed backend API — contract-first design, a sound database schema, a Postgres MCP for live schema access, a strict TypeScript rule, and a security pass before you merge.

  1. Skill

    Add the API design skill

    Start contract-first before writing handlers

    skills.sh
    npx skills add https://github.com/obra/superpowers --skill api-design
  2. Skill

    Add the database schema skill

    Model tables, indexes, and migrations

    skills.sh
    npx skills add https://github.com/obra/superpowers --skill database-schema
  3. MCP

    Configure the Postgres MCP

    Add your connection string for live schema access

    {
  "mcpServers": {
    "postgres": {
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-postgres"],
      "env": {
        "POSTGRES_CONNECTION_STRING": "postgresql://user:pass@localhost:5432/db"
      }
    }
  }
}
  4. Rule

    Add the TypeScript strict rule

    ---
description: TypeScript strictness conventions
alwaysApply: true
---

- Never use `any` — prefer `unknown` and narrow it
- Do not use `!` non-null assertions to silence the type checker
- Add explicit return types to exported functions
- Model invalid states out of existence with discriminated unions
- Validate external data at the boundary with a schema (zod)
  5. Skill

    Add the security audit skill

    Run before opening the PR

    skills.sh
    npx skills add https://github.com/obra/superpowers --skill security-audit