NotFair Plugin is a collection of open-source SEO, generative-engine-optimization, and marketing workflows that AI agents can follow. It helps agents audit websites, analyze search and advertising data, plan campaigns, and make reviewable marketing changes; the catalogue entries are its skills, instructions, MCP connection, and plugin.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add nowork-studio/notfair-plugin --skill seo-driftgit clone --depth 1 https://github.com/nowork-studio/notfair-pluginWrote 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/nowork-studio/notfair-plugin/seo-drift)<a href="https://agentmods.dev/skills/nowork-studio/notfair-plugin/seo-drift"><img src="https://agentmods.dev/badge/skills/nowork-studio/notfair-plugin/seo-drift.svg" alt="Measured on agentmods" height="20"></a>- 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 | $0.00225 | $0.00835 |
| Opus 5 | $0.00112 | $0.00417 |
| Sonnet 5 | $0.00045 | $0.00167 |
| Haiku 4.5 | $0.00022 | $0.00084 |
Grade A, and why
seo-drift 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 8d 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 — 76 lines — stays where its author put it; the contents beside it link to each section on GitHub.
SEO Drift Monitoring
You are an SEO QA engineer. Your job is to make SEO regressions visible — capture a known-good baseline and, on later runs, report exactly what drifted so the user can catch a CMS overwrite, a botched migration, or a slow ranking decline before it costs traffic.
Credit: capability inspired by the open-source
claude-seoproject (MIT, Agrici Daniel). Implementation is original to NotFair.
Step 0 — Mode
- Baseline — capture current state and save it.
- Compare — capture current state and diff against the most recent baseline.
If no prior baseline exists, run baseline mode and tell the user a baseline is now
saved (nothing to compare yet). Store snapshots under the user's chosen reports
location (default: a seo-drift/ folder alongside their other audit logs).
Phase 0 — Preflight & data
Read and follow ../shared/preamble.md. GSC strongly recommended here — rankings
and indexed counts are the highest-signal drift metrics.
Phase 1 — Capture snapshot
Collect for a defined set of key URLs (top pages by traffic + user-specified):
- GSC (if connected) — per-query position & impressions; total indexed pages (Index coverage); top pages by clicks.
- On-page (crawled live) — title, meta description, H1, canonical URL, robots/meta-robots (index/noindex), schema types present, word count.
Stamp the snapshot with a date provided by the user/runtime (do not invent one).
Phase 2 — Diff (compare mode)
Against the previous baseline, surface:
- Rankings — queries that dropped ≥ N positions; queries lost entirely.
- Indexation — drop in indexed page count; specific key pages now missing.
- Metadata — titles/metas/H1s that changed (flag blanks or templated defaults like "Home | Site" — the redeploy-overwrite signature).
- Directives — canonical changed/removed;
noindexnewly present on a page that should be indexed (the single most dangerous regression — surface first). - Schema — structured data that disappeared.
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.
- 8d ago First seen · 76 lines · 225 tokens per session scan A 704ed1d68aa8
seo-drift is a skill published in the GitHub repository nowork-studio/notfair-plugin (3,601 stars, last pushed 2d ago), licensed MIT. It adds 225 tokens to every session and 835 once invoked, 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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build-user-persona
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write-product-strategy
Generate comprehensive product strategy documents aligned with business goals. Use this when defining or updating your product's strategic direction, aligning teams on where to play and how to win, or creating a STRATEGY.md that bridges vision and execution. Triggers include: clarifying product strategy, articulating…
competitive-analysis
Structure a competitive landscape analysis — player profiles, capability comparison matrix, whitespace opportunities, and strategic implications. Use this skill when entering a new market, refreshing strategy, or preparing for a planning cycle. Trigger on: "do a competitive analysis", "who are our competitors"…
write-feature-request
Guided Feature Request (FR) authoring. Assists the user in writing a high-quality FR by collecting structured inputs (problem, solution, outcomes, requirements), then auto-generates Acceptance Criteria for every requirement. If any AC cannot be written due to missing information, the skill identifies the gaps and…