Skip to content
Get packs

Replica Backend Builder

Builds auth, database, Stripe payments, email and jobs for an app clone, using official APIs only

Source Download skill
Repository
Jakeschincariol/replica-skill
Stars
7,057
Licence
MIT
Files
1 file

What it does

When installed, the agent can take a planned app clone and build its server side: user login and sessions, a database with access rules, subscription payments in Stripe test mode, transactional email, scheduled jobs, and connections to services like Google Calendar through their official APIs. It also follows a security checklist and keeps a backend.md progress file. It is designed to work from a plan written by a companion skill and never uses the original app's private endpoints or credentials.

Great for

  • Developers prototyping a web or mobile app who want a working backend scaffold quickly
  • Students learning how auth, row-level security and Stripe webhooks fit together
  • Teams building a fake-data demo that will later move to real accounts

Skip it if

  • Production launches handling real customer payments or personal data without review, since the skill itself says to test in Stripe test mode first and it does not replace a security audit
  • Cloning a product in a way that copies a competitor's private APIs or branding, which the skill explicitly forbids and which can breach terms of service
  • Non-developers who cannot review generated code, migrations or environment settings before deploying them

Try asking

  • “Add login with email verification and password reset to my app clone”
  • “Set up the Supabase database and row level security so users only see their own records”
  • “Connect Stripe Checkout and the Customer Portal in test mode with webhook handling”
  • “Add Google Calendar sync using my own Google Cloud project”
Step-by-step guide: how to use Replica Backend BuilderInstall, first run, examples, tips and FAQs

Install in 3 steps

  1. 1

    Download the skill

    The ZIP contains the 1 original files, the MIT licence and an attribution note.

    replica-backend.zip
  2. 2

    Add it to your agent

    Claude Code (all projects)

    mkdir -p ~/.claude/skills && unzip replica-backend.zip -d ~/.claude/skills/

    Claude Code / Agent SDK (this project only)

    mkdir -p .claude/skills && unzip replica-backend.zip -d .claude/skills/

    Claude apps (web/desktop): Settings → Capabilities → Skills → Upload skill, and choose the ZIP.

  3. 3

    Ask for the task

    No special command needed — the agent reads the skill's description and loads it when your request matches. Try one of the prompts above.

Get better results

  • Create your own Stripe test account and Supabase project first, then paste keys into .env.local yourself rather than sharing them in chat
  • Ask for a second-user authorisation test before trusting any table or route, and review the generated migrations
  • Start Google OAuth verification early, since the skill notes it can take weeks before public launch

What's inside

  • SKILL.md

Redistributed unmodified from Jakeschincariol/replica-skill under the MIT licence. The assessment was drafted with AI from the skill's files on 2026-11-02. Skills can instruct your agent to run code — read SKILL.md and any scripts before installing.