Borrowing it
Nothing to install: this file belongs to acoyfellow/unsurf. 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/acoyfellow/unsurf/main/AGENTS.mdgit clone --depth 1 https://github.com/acoyfellow/unsurfWrote 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/acoyfellow/unsurf/agents-md)<a href="https://agentmods.dev/instructions/acoyfellow/unsurf/agents-md"><img src="https://agentmods.dev/badge/instructions/acoyfellow/unsurf/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/acoyfellow/unsurf/agents-md"><img src="https://agentmods.dev/badge/instructions/acoyfellow/unsurf/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 | $0.00610 | $0.00610 |
| Opus 5.5 | $0.00244 | $0.00244 |
| Sonnet 5.5 | $0.00122 | $0.00122 |
| Haiku 4.5 | $0.00061 | $0.00061 |
Grade A, and why
unsurf 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 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.
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 — 82 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md — unsurf
What This Is
Turn any website into a typed API. Scout captures network traffic, infers schemas, outputs OpenAPI. Worker replays endpoints directly. Heal re-scouts when paths break.
- MCP Server: https://unsurf-api.coey.dev/mcp
- Docs: https://unsurf.coey.dev
- Directory: https://unsurf.coey.dev/directory
- NPM:
unsurf
Stack
- Effect — typed errors, DI, streams, retries
- Alchemy — infrastructure as TypeScript
- Drizzle — typed SQL (D1/SQLite)
- Cloudflare Workers — edge runtime
- Cloudflare Browser Rendering — headless Chrome
Architecture
src/
├── cf-worker.ts # Worker entry point
├── mcp.ts # MCP server entry point
├── cli.ts # CLI (unsurf search/lookup/publish)
├── domain/ # Effect Schema types
├── db/ # Drizzle schema + queries
├── services/ # Browser, Store, SchemaInferrer, OpenApiGenerator, Gallery, Directory
├── tools/ # Scout, Worker, Heal
└── ai/ # LLM Scout Agent (ScoutAgent, AnthropicProvider)
Directory
The API Directory is a community registry of unsurfed APIs at /directory.
Endpoints
GET /d/ # List all fingerprints
GET /d/:domain # Get domain info + capabilities
GET /d/:domain/:capability # Get endpoints for capability
GET /d/:domain/:method/:path # Get specific endpoint details
GET /d/:domain/spec # Get OpenAPI spec
POST /d/publish # Publish scouted API to directory
POST /d/validate # Validate before publishing
DELETE /d/:domain # Remove from directory
GET /search?q=... # Semantic search across directory
Seeding
Curated seed list at scripts/seed-apis.json. Run seeding script:
bun run scripts/seed.ts
Conventions
exactOptionalPropertyTypes: true- Biome for lint/format (tabs, 100 width)
- CI: check → docs → deploy
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 · 82 lines · 610 tokens per session scan A 5fc57d97fbe6
unsurf AGENTS.md is an instructions file published in the GitHub repository acoyfellow/unsurf (21 stars, last pushed 4mo ago), licensed MIT. It adds 610 tokens to every session, about $0.0024 per session on Opus 5.5. 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.
unsurf AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| unsurf AGENTS.mdacoyfellow/unsurf | Instructions file | 21 | 4mo ago | MIT | A | 610 | Codex, OpenCode |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | yesterday | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |