Open source alternative to Semrush and Ahrefs
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.
Latest release v0.1.13 · 14 Oct 2026
28 files for Claude Code, Codex and OpenCode: competitive-landscape, competitor-analysis, create-repo-skill, deslop and 24 more — 1,556 tokens loaded in every session.
AGENTS.md A 1,556 tok .agents/skills/competitive-landscape/SKILL.md A 22 tok .agents/skills/competitor-analysis/SKILL.md A 22 tok .agents/skills/create-repo-skill/SKILL.md A 82 tok .agents/skills/deslop/SKILL.md A 61 tok .agents/skills/keyword-clustering/SKILL.md A 17 tok .agents/skills/keyword-research/SKILL.md A 20 tok .agents/skills/link-prospecting/SKILL.md A 23 tok .agents/skills/local-seo/SKILL.md A 24 tok .agents/skills/merge-ready/SKILL.md A 84 tok .agents/skills/openseo-release-notes/SKILL.md A 71 tok .agents/skills/openseo-review-web-content/SKILL.md A 58 tok .agents/skills/papercuts/SKILL.md A 115 tok .agents/skills/seo-audit/SKILL.md A 34 tok .agents/skills/seo-coach/SKILL.md A 35 tok .agents/skills/seo-project-setup/SKILL.md A 36 tok .agents/skills/simple-issue-description/SKILL.md A 75 tok .agents/skills/verify-local-mcp/SKILL.md A 89 tok .agents/skills/observability-triage/SKILL.md A 70 tok .agents/skills/setup-openseo/SKILL.md A 38 tok .agents/skills/review-brief/SKILL.md A 65 tok .agents/skills/seo-report/SKILL.md A 47 tok .agents/skills/evaluate-skill/SKILL.md A 66 tok .agents/skills/review-simplify/SKILL.md A 31 tok .agents/skills/review-ui-states/SKILL.md A 37 tok .agents/skills/test-audit/SKILL.md A 80 tok .agents/skills/ai-prompt-research/SKILL.md A 74 tok .agents/skills/ai-visibility-audit/SKILL.md A 100 tok These files are every-app/open-seo's own configuration — they tell Claude Code, Codex and OpenCode how to work on this repository, so they are not mods to install elsewhere. Copy one as a starting point and replace the parts that are about this project.