Individual skill

replica-backend

Builds the backend of an app clone: auth, database migrations and access rules, payments with Stripe, email, background jobs and third-party integrations through official APIs only, plus a security checklist. Use when the user says "add login", "set up auth", "wire up the database", "add payments", "connect Stripe", "add Google Calendar", "send emails", "backend for my clone", or when /replica-build is running on fake data.

replica-backend/SKILL.md

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Observed behavior: Instructions only
Last checked: Nov 9, 2026

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Repository stars (not skill ratings): 8,646
Repository last updated: Oct 3, 2026
License: MIT

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agent Repository topic
agent-skills Repository topic
app-clone Repository topic
claude Repository topic
claude-code Repository topic
claude-skills Repository topic
indie-hacker Repository topic
reverse-engineering Repository topic
saas Repository topic
data Derived category
security Derived category
productivity Derived category
data-databases Derived category

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SKILL.mdcore · 3,985 bytes

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# replica-backend

Reads `replica/architecture.md`. Writes migrations and server code, and keeps
`replica/backend.md` (checklist below) up to date.

## The rules

- **Official, public APIs only, with the user's own keys.** Never call the
  original app's private endpoints, never reuse its OAuth client, never proxy
  through it.
- **The user creates accounts and keys.** Claude never signs up for services,
  never types a password, card or live key. The user creates the Stripe,
  Supabase, Resend or Google Cloud project and puts keys in `.env.local`.
  Claude writes `.env.example` with every variable name and no values.