Borrowing it
Nothing to install: this file belongs to Arjia-Labs/sark. 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/Arjia-Labs/sark/main/AGENTS.mdgit clone --depth 1 https://github.com/Arjia-Labs/sarkWrote 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/arjia-labs/sark/agents-md)<a href="https://agentmods.dev/instructions/arjia-labs/sark/agents-md"><img src="https://agentmods.dev/badge/instructions/arjia-labs/sark/agents-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/arjia-labs/sark/agents-md"><img src="https://agentmods.dev/badge/instructions/arjia-labs/sark/agents-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 | $0.02580 | $0.02580 |
| Opus 5.5 | $0.01032 | $0.01032 |
| Sonnet 5.5 | $0.00516 | $0.00516 |
| Haiku 4.5 | $0.00258 | $0.00258 |
Grade A, and why
sark AGENTS.md scanned grade A with 1 finding 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 2mo 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -s https://sark.<subdomain>.workers.dev/health How it starts
The opening of the file, as written. The whole thing — 249 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md — deploying sark
A runbook for an AI agent asked to clone, configure, and deploy this Cloudflare Worker. Follow the phases in order. Each ends with a check; do not continue past a failed check.
Some steps need a decision only the human can make. Those are marked ASK — stop, ask, and wait. Do not guess a Slack channel id, a billing plan, or an allowlist.
Rules
- Never print a secret value. Not in output, not in a commit, not in a comment. Pipe secrets through stdin. If one is ever echoed, say so and tell the human to rotate it.
- Never commit
.dev.varsor.env. Both are gitignored. Keep it that way. - Never put personal settings in
wrangler.jsonc. It is the public template. Worker name, origin, allowlist, and template box id go in.deploy.env(gitignored) and are injected bynpm run deploy.account_idcomes fromCLOUDFLARE_ACCOUNT_ID.npm run check-configenforces this, and it runs in CI. - If a command fails twice the same way, stop and report. Do not improvise around the Cloudflare or Box APIs.
Phase 0 — prerequisites
node --version # must be >= 22
git --version
npx wrangler --version
ASK the human to confirm all three before you touch anything:
- A Cloudflare account on a paid Workers plan. The per-thread state machine is a Durable Object with a SQLite backend, which the free plan does not offer. Deploy will fail at the migration step otherwise.
- An ascii.dev Box account and a
box_...API key. This Worker is a control plane for Box sandboxes and does nothing without one. - Whether Slack is wanted at all. It is optional; the
/apisurface exercises the entire pipeline without a Slack app. If they say no, skip Phase 5.
Authenticate to Cloudflare, whichever the human prefers:
npx wrangler login # interactive, opens a browser
# or export CLOUDFLARE_API_TOKEN=... # a token with Workers Scripts:Edit
export CLOUDFLARE_ACCOUNT_ID=... # required either way
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.
- 2mo ago First seen · 249 lines · 2,580 tokens per session scan A fc78359702ca
sark AGENTS.md is an instructions file published in the GitHub repository Arjia-Labs/sark (1 stars, last pushed 3mo ago), licensed MIT. It adds 2,580 tokens to every session, about $0.0103 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
Other instructions, from other repositories
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.
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Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
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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 copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deno copilot-instructions.md
Copilot instructions for denoland/deno, covering deno development guide for github copilot, network access, high level overview, key directories and key files to understand first.