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/CLAUDE.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/claude-md)<a href="https://agentmods.dev/instructions/nikandr-surkov/ai-saas-starter/claude-md"><img src="https://agentmods.dev/badge/instructions/nikandr-surkov/ai-saas-starter/claude-md/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/instructions/nikandr-surkov/ai-saas-starter/claude-md"><img src="https://agentmods.dev/badge/instructions/nikandr-surkov/ai-saas-starter/claude-md.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00228 | $0.00228 |
| Opus 5 | $0.00114 | $0.00114 |
| Sonnet 5 | $0.00046 | $0.00046 |
| Haiku 4.5 | $0.00023 | $0.00023 |
Grade A, and why
ai-saas-starter CLAUDE.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 9d 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.
What it actually says
@AGENTS.md
Claude Code specifics
- Use plan mode for any change under
src/lib/billing/orsrc/lib/credits/— money and ledger code gets a reviewed plan first. - Scoped rules load automatically from
.claude/rules/(billing, database, design). Follow them; they restate the invariants that matter most. - Skills for common jobs — prefer them over improvising:
/add-feature— scaffold a page + server action + test the repo way./add-ai-provider— implementsrc/lib/ai/provider.tsfor a new provider./db-migration— schema change → generated migration → review → apply.
- The
code-revieweragent (.claude/agents/code-reviewer.md) reviews auth/billing/ledger diffs read-only. Run it before committing changes there. - Hooks: Prettier runs after every file edit;
pnpm typecheckruns when you stop — a type error blocks completion, fix it before finishing.
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.
- 9d ago First seen · 17 lines · 228 tokens per session scan A 47acb6f3e4de
ai-saas-starter CLAUDE.md is an instructions file published in the GitHub repository nikandr-surkov/ai-saas-starter (19 stars, last pushed 1mo ago), licensed MIT. It adds 228 tokens to every session, about $0.0011 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.
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