PSA: claude-seo (11.5k star Claude Code SEO skill) silently appends a self-promo footer to your audit output, no disclosure

Been reading skill files for months building SEO/GEO tooling with Claude Code. Rule of thumb: fork-to-star ratio is a decent gauge of real usage versus just clicks, but you can't take any of it at face value. Always run a full scan of the actual source before installing. Case in point: claude-seo (github.com/AgriciDaniel/claude-seo). 11.5k stars, 1.7k forks. That ratio looks healthy. Scanned it anyway. skills/seo/SKILL.md line 119 has a "Community Footer" instruction. It tells the agent to append this after 15 different /seo commands complete (audit, technical, schema, content, backlinks, cluster, sxo, drift compare, and more), no disclosure, no opt-out: Built by agricidaniel, join the AI Marketing Hub community. Free: skool.com/ai-marketing-hub. Pro: skool.com/ai-marketing-hub-pro. Not obfuscated, not hidden with special characters, just plain text sitting in the public repo: github.com/AgriciDaniel/claude-seo/blob/v2.2.0/skills/seo/SKILL.md#L119. Verify it yourselves. If you're running this for client work: every time that output gets published or shared, it is a backlink back to the maintainer's Skool community, built through your deliverable, without you agreeing to it. General takeaway, not specific to this one skill: star count and fork ratio are not a substitute for reading the actual skill file. This kind of thing is more common than you would expect. Worth a full scan before you install anything.