agent-starter

An opinionated multi-agent skill pack for Claude Code, Codex, and Cursor. Seven deep, handwritten skills for fintech, SaaS, mobile, copywriting, agent tooling, and TOON token savings.

No orchestration framework. No aspirational YAML. Just agent-native project files generated from one shared skill source.

What you get

7 top-level skills:

Skill	Covers
stripe	Checkout, Payment Intents, subscriptions, Connect/marketplace, Terminal, Radar, Treasury, Issuing, webhooks.
supabase	Postgres + RLS, Auth with SSR cookies, Realtime, Storage, Edge Functions, pgvector.
plaid	Link flow, Auth, Transactions sync, Identity, Accounts, balances.
expo	EAS Build, EAS Update, Expo Router, React Native app patterns.
copywriting-frameworks	Headlines, landing pages, ads, emails, CTAs, AIDA, objections, proof placeholders, critiques.
anthropic	Anthropic Claude API plus Claude Code meta-tooling sub-skills.
toon-formatter	When TOON helps, when it does not, and how to invoke the TOON commands.

Agent Targets

Agent	Generated output	Notes
Claude Code	`.claude/`	Native Claude skills, settings, TOON slash commands, optional hooks.
Codex	`AGENTS.md` + `.codex/skills/*/SKILL.md`	Root Codex guidance points to project-local skill files.
Cursor	`.cursor/rules/*.mdc`	Cursor project rules generated as Agent Requested rules, plus an always-applied skill-selection rule.

Claude remains the default for backwards compatibility. Use --agent all to install all supported targets.

Install

# Claude Code only (default)
npx [email protected]

# Codex only
npx [email protected] --agent codex

# Cursor only
npx [email protected] --agent cursor

# Claude Code + Codex + Cursor
npx [email protected] --agent all

# Backwards-compatible aliases still work
npx [email protected] --agent all

For Claude TOON commands, add the runtime deps to your project:

npm i @toon-format/toon gpt-tokenizer

Profiles

npx [email protected] --profile web-saas --agent all
npx [email protected] --profile fintech --agent codex,cursor
npx [email protected] --skills stripe,copywriting-frameworks --agent cursor

Profiles select a skill set. Agent targets decide where that skill set is installed.

Structure

.claude/
  skills/<skill>/skill.md
  commands/
  utils/toon/cli.mjs

.codex/
  skills/<skill>/SKILL.md
AGENTS.md

.cursor/
  rules/agent-starter.mdc
  rules/<skill>.mdc
  rules/<skill>/references/

The package keeps one shared source of truth in templates/.claude/skills/ and generates Codex/Cursor formats from that source during install.

Documentation Pulls

The docs command is Claude-specific because external docs are stored under .claude/skills/*/docs.

npx [email protected] docs pull stripe
npx [email protected] docs status

Benchmarks

Real measured token counts for representative workloads are in bench/. Numbers use gpt-tokenizer, not a claimed heuristic.

Requirements

Node.js >= 18
Claude Code, Codex, or Cursor, depending on the selected target
Optional: @toon-format/toon and gpt-tokenizer for Claude TOON slash commands

License

MIT. Not affiliated with Stripe, Supabase, Plaid, Expo, Anthropic, OpenAI, Cursor, or @toon-format/toon.