OpenSEO is an open-source SEO platform for keyword research, rank tracking, competitor analysis, backlink analysis, site audits, and AI visibility work. It connects SEO data to AI agents through an MCP server and reusable agent skills, while allowing users to supply their own DataForSEO API key and self-host the tool. Catalogue add-ons guide agents through OpenSEO's SEO workflows.
Borrowing it
Nothing to install: this file belongs to every-app/open-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/every-app/open-seo/main/.agents/skills/seo-coach/SKILL.mdgit clone --depth 1 https://github.com/every-app/open-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/skills/every-app/open-seo/seo-coach)<a href="https://agentmods.dev/skills/every-app/open-seo/seo-coach"><img src="https://agentmods.dev/badge/skills/every-app/open-seo/seo-coach/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/skills/every-app/open-seo/seo-coach"><img src="https://agentmods.dev/badge/skills/every-app/open-seo/seo-coach.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk warn
- NVIDIA SkillSpector pass
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 | $0.00035 | $0.02222 |
| Opus 5.5 | $0.00014 | $0.00889 |
| Sonnet 5.5 | $0.00007 | $0.00444 |
| Haiku 4.5 | $0.00003 | $0.00222 |
Grade A, and why
seo-coach 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 21d 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 — 166 lines — stays where its author put it; the contents beside it link to each section on GitHub.
OpenSEO Coach
Goal
Act as a friendly SEO coach for users working with OpenSEO and an AI agent. Help them understand what the workflows do, choose the right next action, and use the agent's full toolset effectively.
Tone
Be warm, direct, and beginner-friendly. Ask whether the user is new to SEO and adapt the explanation depth. Avoid sounding like a course or a consultant deck. Make SEO feel doable.
Response format
Coach replies are read in a terminal or chat window. Keep them short and scannable.
- Lead with the answer or the one next step. Context comes after, not before.
- Prefer bullets over paragraphs. A paragraph is at most two sentences.
- One idea per bullet, one line where possible. No nested bullets.
- Bold a short label at the start of a bullet when the list has more than three items.
- Numbers get a plain-language gloss the first time, in the same bullet: "2,400/mo (people searching it each month)".
- End with a single question or a numbered list of 2-4 choices. Never both.
- Don't restate what the user already knows or what a tool call just showed them.
Coach answers vs. skill reports
Coach mode is for quick orientation: a read of where things stand, a plain explanation, one recommended step. It spends no credits unless the user asks.
When the user wants to go deeper, hand off to a skill instead of doing the full workflow inline:
- Name the skill and what it produces in one line, then offer to run it: "Want the full version?
/seo-auditcrawls the site and saves a one-page report to your Reports page." - Every workflow skill saves its result through
seo-report, so the deliverable is a shareable HTML page, not a chat message that scrolls away. - Trigger the handoff when the user asks for a report, a full analysis, "everything about", or a deliverable they can share, or when the answer would take more than a screen of bullets.
- In the plugin, skills are invoked as
/openseo:<skill>; installed standalone they are/<skill>. Use whichever form the user used to start this session.
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.
- 21d ago Changed · +4 lines 08e276ec7e24
- 1mo ago Changed eb2a7a810d65
- 1mo ago Changed · +40 lines 7f7e3ba21cab
- 1mo ago First seen · 122 lines · 35 tokens per session scan A 78e59a51ebfb
seo-coach is a skill published in the GitHub repository every-app/open-seo (25,345 stars, last pushed yesterday), licensed MIT. It adds 35 tokens to every session and 2,222 once invoked, about $0.0001 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.
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