Supabase Development and Debugging
supabase/agent-skills
General Supabase skill for database, auth, Edge Functions, Realtime and storage work, plus client libraries, migrations, security audits, debugging and reading logs.
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…
Install Replica Backend
$ npx skills add Jakeschincariol/replica-skill --skill replica-backend -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install Jakeschincariol/replica-skill replica-backend --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/Jakeschincariol/replica-skill.git skills-src && mkdir -p .claude/skills && cp -r skills-src/replica-backend .claude/skills/replica-backend && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "replica-backend" agent skill from https://github.com/Jakeschincariol/replica-skill/tree/main/replica-backend into .claude/skills/replica-backend/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "replica-backend", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/Jakeschincariol/replica-skill/tree/main/replica-backendType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add Jakeschincariol/replica-skill --skill replica-backend -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install Jakeschincariol/replica-skill replica-backend --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Jakeschincariol/replica-skill.git skills-src && mkdir -p .agents/skills && cp -r skills-src/replica-backend .agents/skills/replica-backend && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "replica-backend" agent skill from https://github.com/Jakeschincariol/replica-skill/tree/main/replica-backend into .agents/skills/replica-backend/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "replica-backend", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add Jakeschincariol/replica-skill --skill replica-backend -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install Jakeschincariol/replica-skill replica-backend --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Jakeschincariol/replica-skill.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/replica-backend .cursor/skills/replica-backend && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "replica-backend" agent skill from https://github.com/Jakeschincariol/replica-skill/tree/main/replica-backend into .cursor/skills/replica-backend/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "replica-backend", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/Jakeschincariol/replica-skill.git --path replica-backend--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add Jakeschincariol/replica-skill --skill replica-backend -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install Jakeschincariol/replica-skill replica-backend --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Jakeschincariol/replica-skill.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/replica-backend .gemini/skills/replica-backend && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "replica-backend" agent skill from https://github.com/Jakeschincariol/replica-skill/tree/main/replica-backend into .gemini/skills/replica-backend/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "replica-backend", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install Jakeschincariol/replica-skill replica-backendInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add Jakeschincariol/replica-skill --skill replica-backend -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/Jakeschincariol/replica-skill.git skills-src && mkdir -p .github/skills && cp -r skills-src/replica-backend .github/skills/replica-backend && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "replica-backend" agent skill from https://github.com/Jakeschincariol/replica-skill/tree/main/replica-backend into .github/skills/replica-backend/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "replica-backend", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add Jakeschincariol/replica-skill --skill replica-backend -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install Jakeschincariol/replica-skill replica-backend --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Jakeschincariol/replica-skill.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/replica-backend .opencode/skills/replica-backend && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "replica-backend" agent skill from https://github.com/Jakeschincariol/replica-skill/tree/main/replica-backend into .opencode/skills/replica-backend/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "replica-backend", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
replica-backend- GitHub stars
- 1.2k
- Token cost
- ~997 tokens
- SKILL.md length
- 496 words
- Files
- 1
- Skills in repo
- 11
- Repo updated
- First seen
- Licence
- MIT
At a glance
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…
- The user says add login
- SKILL.md covers The rules, Auth, Database and Payments, plus 4 more sections
- Calls npm
- Wire up the database
What it does
Replica Backend is an agent skill from Jakeschincariol/replica-skill. 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.
Its SKILL.md is about 1000 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Backend & APIs, covering Security review, Test data and fixtures and Background jobs. It works with Stripe and Google Calendar. The repository describes itself as: Eleven free Claude skills that clone any app: reverse-engineer it, rebuild it, test it for bugs, then fix what its users hate. Free, MIT. The licence is MIT.
When your agent uses it
- The user says add login
- Wire up the database
- Add Google Calendar
- Backend for my clone
Example prompts
- “add login”
- “set up auth”
- “wire up the database”
- “/replica-backend”
What it can do on your machine
Read from SKILL.md and the folder at commit 77c9436. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
npm
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use npm, which can reach the network depending on how they are called.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Replica Backend loads about 997 tokens when it runs. Until then it costs about 111 tokens; SKILL.md has 496 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check: notes
The automated check noted patterns worth knowing about, such as sudo or a known installer.
- NoteMentions a .env fileSKILL.md:24
r Google Cloud project and puts keys in `.env.local`. - NoteMentions a .env fileSKILL.md:76
- [ ] secrets only in env vars, `.env*` in `.gitignore`, nothing in client bundles
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from Jakeschincariol/replica-skill at commit 77c9436, republished under its MIT licence (© Jakeschincariol). 496 words, ~997 tokens.
Download SKILL.mdSave it as
.claude/skills/replica-backend/SKILL.md (or your agent's skills folder).- name
- replica-backend
- description
- 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
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.examplewith every variable name and no values. - Test mode first. Stripe test keys and test cards until replica-deploy.
Auth
- Email sign up with verification, password reset, magic link if the original has it. OAuth (Google, Apple) with the user's own developer apps.
- Sessions: http-only secure cookies. Sign out everywhere.
- Roles and teams if the recon map has them: owner, admin, member, with one function that answers "can this user do this to this record".
- Account deletion that actually deletes. Apple requires it for apps with sign up.
Database
- Migrations from
architecture.md, checked in, run by a script. - Access rules on every table: row level security policies on Supabase, or the authorisation function called in every query. Test it: a second user must get nothing back.
- Seed script with realistic fake data (no real people).
- Backups on (the host's daily backups count, check they are enabled).
Payments
- Stripe Checkout for sign up to a plan, the Customer Portal for changes and cancelling. Do not build card forms.
- Webhooks: verify the signature, store the event id, make every handler
idempotent (Stripe retries). Handle
checkout.session.completed,customer.subscription.updated,customer.subscription.deleted,invoice.payment_failed. - Subscription status lives in your database, updated by webhooks, read by your app. Never trust the client.
- Cancelling is one click. Hard-to-cancel billing is a top complaint about most apps, and in many places it is illegal.
Show full SKILL.md (192 more words)Show less
Email and jobs
- Transactional email through Resend or Postmark from your own domain. Templates written fresh.
- Jobs for anything time-based (reminders, digests, sync, cleanup) with retries and a dead-letter log. Times in UTC, shown in the user's zone.
Integrations
For each integration in the feature matrix: the official API, the OAuth
scopes needed (fewest possible), the provider's review process, rate limits.
Google scopes like Calendar need Google's OAuth verification before public
launch, which takes weeks. Start it early and write that in backend.md.
Security checklist
- secrets only in env vars,
.env*in.gitignore, nothing in client bundles - input validated on the server (zod or similar) on every route
- authorisation checked on every read and write, tested with a second user
- rate limits on auth, sign up, and anything that sends email or SMS
- webhooks verify signatures
- uploads: size and type limits, served from a separate domain or bucket
- no user data in URLs or logs
- dependencies audited (
npm audit) - privacy policy lists every processor (Stripe, Resend, host, analytics)
Output
Working auth, database, payments in test mode, email and the integrations,
.env.example, replica/backend.md with the checklist ticked, feature
matrix rows updated. Next: /replica-test.
© Jakeschincariol, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in replica-backend of Jakeschincariol/replica-skill.
Open the folder on GitHubat commit 77c9436
Compare with similar skills
Replica Backend next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Replica Backend this skillJakeschincariol/replica-skill | 1.2k | — | ~997 | Automated safety check: Notes | MIT | |
| Supabase Development and Debuggingsupabase/agent-skills | 2.7k | 3 repos | ~3.6k | Automated safety check: Pass | MIT | |
| Superloopy Backend Routingbeefiker/superloopy | 111 | 1 repos | ~3k | Automated safety check: Pass | MIT | |
| OneCLI Gatewaynanocoai/nanoclaw | 31k | — | ~856 | Automated safety check: Pass | MIT | |
| Senior Backendalirezarezvani/claude-skills | 28k | 1 repos | ~3.8k | Automated safety check: Pass | MIT | |
| Security SecretsIgorWarzocha/Opencode-Workflows | 122 | — | ~1.2k | Automated safety check: Notes | None |
Similar skills
- Official
Superloopy Backend Routing
beefiker/superloopy
Routes backend work in the Superloopy loop harness to the right reference module, covering API contracts, schema migrations, transactions, background jobs, caching and security.
OneCLI Gateway
nanocoai/nanoclaw
Explains how to call external APIs through the OneCLI proxy, which injects stored credentials into outgoing HTTPS requests so the agent never handles keys.
Senior Backend
alirezarezvani/claude-skills
Designs and implements backend systems including REST APIs, microservices, database architectures, authentication flows, and security hardening.
Security Secrets
IgorWarzocha/Opencode-Workflows
Review secret detection patterns and scanning workflows. An agent skill from IgorWarzocha/Opencode-Workflows.
- Official
Warehouse Source New Version
PostHog/posthog
Add support for a new vendor API version to an existing Data warehouse import source, or deprecate an old one.
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Related
Works with
Categories
Questions about Replica Backend
What does Replica Backend do?
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…. Replica Backend is an agent skill from Jakeschincariol/replica-skill. 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.
When should I use Replica Backend?
Replica Backend fits situations like: the user says add login; wire up the database; add Google Calendar; backend for my clone.
How do I install Replica Backend in Claude Code?
Run `npx skills add Jakeschincariol/replica-skill --skill replica-backend -a claude-code`. Or copy the skill folder (replica-backend in Jakeschincariol/replica-skill) into .claude/skills/replica-backend in your project. Claude Code loads it when a task matches its description.
How do I install Replica Backend in Codex?
Run `npx skills add Jakeschincariol/replica-skill --skill replica-backend -a codex`. Or copy the skill folder (replica-backend in Jakeschincariol/replica-skill) into .agents/skills/replica-backend in your project. Codex loads it when a task matches its description.
Can I use Replica Backend in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add Jakeschincariol/replica-skill --skill replica-backend -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/replica-backend, .gemini/skills/replica-backend, .github/skills/replica-backend and .opencode/skills/replica-backend in your project.
What does Replica Backend need to run?
Going by SKILL.md and its folder, Replica Backend needs the command-line tools its instructions call (npm).
Does Replica Backend access the network?
SKILL.md contains no URLs. Its commands use npm, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
Is Replica Backend safe to install?
Our automated static check of SKILL.md found notes only (mentions a .env file), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.
What licence does Replica Backend use?
Replica Backend is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Replica Backend use?
About 997 tokens (SKILL.md is roughly 4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Replica Backend?
Skills that share tags, products or a category with Replica Backend: Supabase Development and Debugging (supabase/agent-skills, 2.7k stars), Superloopy Backend Routing (beefiker/superloopy, 111 stars), OneCLI Gateway (nanocoai/nanoclaw, 31k stars) and Senior Backend (alirezarezvani/claude-skills, 28k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Replica Backend?
Jakeschincariol (a GitHub user) maintains it in Jakeschincariol/replica-skill, which has 1,158 GitHub stars. The repository holds 11 skills in this directory. The repository was last updated on October 3, 2026.
Source: Jakeschincariol/replica-skill on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.