Borrowing it
Nothing to install: this file belongs to iannuttall/seo. 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/iannuttall/seo/main/AGENTS.mdgit clone --depth 1 https://github.com/iannuttall/seoWrote 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/iannuttall/seo/agents-md)<a href="https://agentmods.dev/instructions/iannuttall/seo/agents-md"><img src="https://agentmods.dev/badge/instructions/iannuttall/seo/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/iannuttall/seo/agents-md"><img src="https://agentmods.dev/badge/instructions/iannuttall/seo/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 | $0.01230 | $0.01230 |
| Opus 5.5 | $0.00492 | $0.00492 |
| Sonnet 5.5 | $0.00246 | $0.00246 |
| Haiku 4.5 | $0.00123 | $0.00123 |
Grade A, and why
seo 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 2d 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 — 104 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Agent Notes
seo is a TypeScript SEO CLI, a local stdio MCP server, a hosted MCP server
(https://seoskill.dev/mcp, apps/mcp), one skill and the seoskill.dev site
(apps/web). The public repo is iannuttall/seo; the npm package is the
unscoped seo. CLAUDE.md is a symlink to this file.
This file holds only the rules you need for coding here that the code cannot tell you. Product and privacy decisions are not rules for this file.
- Read
CONTENT.mdbefore you write copy a person reads: site, docs, help text, result text, README, metadata. - Read
apps/web/AGENTS.mdbefore you touchapps/web.
Code patterns
- Each shared command and MCP tool is defined once in
packages/core/src/commands(tools.ts). The CLI, the local MCP server and the hosted server only supply aToolSurface. Never put report logic in a surface. - Core code must run in Node and in Cloudflare Workers.
- Bing blocks Cloudflare's network, so
HOSTED_BINGstays off and Bing calls run locally. - Provider packages (
seo/provider-sdk) return normalized evidence only. - Decision models sit behind
packages/core/src/decision-model.ts. - Edits to an agent's MCP config keep unrelated settings, make a backup and
never replace an entry that
seodid not write. - The Clicky account password never leaves the server.
Report truth
- Keep zero, missing, unavailable, filtered, partial and capped distinct. A capped or partial source cannot support a zero or an all-clear.
- Do not claim causation, ranking impact or indexing unless the evidence shows that exact thing. Label heuristics as heuristics.
- Keep each source's own metric names. A Clicky visit is not a Google Analytics session or user. Research data never replaces or blends with first-party data.
- Search Console dates use the
America/Los_Angelescalendar through the shared final-data helper. - Sort with stable tie-breakers so input order never changes output.
- Read every JSON API response with
readJson, neverresponse.json(). - Bound every fetch, list and output before the work starts, not after. Peak memory follows the active work window, not the site size.
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.
- 2d ago Changed · -2 lines · -32 tokens per session f8d034216b15
- 4d ago Changed · +2 tokens per session b8e551b9e648
- 15d ago Changed · -50 lines · -770 tokens per session 56c7117e60a3
- 16d ago Changed · +9 lines · +152 tokens per session 341c93ebd261
- 17d ago Changed · +2 lines · +46 tokens per session e9aebc95af88
- 20d ago Changed · -462 lines · -5,027 tokens per session de50acc8bf10
- 21d ago Changed · +9 lines · +170 tokens per session 86297edd31d4
- 22d ago Changed · +99 lines · +1,559 tokens per session bfd904e09a6d
- 2mo ago First seen · 499 lines · 5,130 tokens per session scan A e21cf190faad
seo AGENTS.md is an instructions file published in the GitHub repository iannuttall/seo (605 stars, last pushed yesterday), licensed Apache-2.0. It adds 1,230 tokens to every session, about $0.0049 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.
seo AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| seo AGENTS.mdiannuttall/seo | Instructions file | 605 | yesterday | Apache-2.0 | A | 1,230 | 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 |