Borrowing it
Nothing to install: this file belongs to nikandr-surkov/ai-saas-starter. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/nikandr-surkov/ai-saas-starter/main/AGENTS.mdgit clone --depth 1 https://github.com/nikandr-surkov/ai-saas-starterWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/nikandr-surkov/ai-saas-starter/agents-md)<a href="https://agentmods.dev/instructions/nikandr-surkov/ai-saas-starter/agents-md"><img src="https://agentmods.dev/badge/instructions/nikandr-surkov/ai-saas-starter/agents-md.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.01655 | $0.01655 |
| Opus 5 | $0.00827 | $0.00827 |
| Sonnet 5 | $0.00331 | $0.00331 |
| Haiku 4.5 | $0.00166 | $0.00166 |
Grade A, and why
ai-saas-starter AGENTS.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 7d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 131 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
Operating manual for coding agents (and humans) in this repo. When your instincts conflict with this file, this file wins.
Snapshot
- ai-saas-starter — open-source SaaS foundation: auth, Stripe subscriptions, an append-only credits ledger, and AI image generation.
- Next.js 16 (App Router, RSC, Server Actions, Turbopack) · React 19 · TypeScript 5 strict · Better Auth 1.5 · Drizzle ORM + PostgreSQL · Stripe · Vercel AI SDK 6 via AI Gateway · Tailwind CSS v4 + shadcn/ui · Resend + React Email · Vitest + Playwright.
- Package manager: pnpm. Never npm, never yarn. Never edit
pnpm-lock.yamlby hand.
Commands
| Command | What it does |
|---|---|
pnpm dev |
Dev server (Turbopack) at http://localhost:3000 |
pnpm build |
Production build |
pnpm typecheck |
tsc --noEmit |
pnpm lint |
ESLint |
pnpm format |
Prettier, write mode |
pnpm test |
Vitest. Ledger tests need Postgres: docker compose up -d |
pnpm test:e2e |
Playwright vs dev server. Needs Postgres up |
pnpm db:generate |
drizzle-kit: src/db/schema.ts → SQL migration |
pnpm db:migrate |
Apply pending migrations |
pnpm db:studio |
Drizzle Studio, browse the DB |
pnpm stripe:listen |
Stripe CLI → forwards webhooks to localhost:3000 |
pnpm email:dev |
React Email preview server |
docker compose up -d |
Local Postgres 17 |
Definition of done
A change is done when pnpm typecheck && pnpm lint && pnpm test all pass.
New features include tests. UI work follows DESIGN.md. No stray console.log,
no TODO comments left behind.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 7d ago First seen · 131 lines · 1,655 tokens per session scan A b8c279e6e7d2
ai-saas-starter AGENTS.md is an instructions file published in the GitHub repository nikandr-surkov/ai-saas-starter (17 stars, last pushed 1mo ago), licensed MIT. It adds 1,655 tokens to every session, about $0.0083 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other instructions, from other repositories
ai-agent-rules-generator ui-design.instructions.md
Glitch Payment Gateway admin UI design rules — mandatory element & component reference for WooCommerce settings.
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).