diff --git a/README.md b/README.md
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@@ -201,6 +201,7 @@ Skills are not MCP servers and not tools. MCP defines how an agent connects to e
 - [git-pushing](https://github.com/mhattingpete/claude-skills-marketplace/tree/main/engineering-workflow-plugin/skills/git-pushing) - Automate git operations and repository interactions.
 - [google-workspace-skills](https://github.com/sanjay3290/ai-skills/tree/main/skills) - Suite of Google Workspace integrations: Gmail, Calendar, Chat, Docs, Sheets, Slides, and Drive with cross-platform OAuth. *By [@sanjay3290](https://github.com/sanjay3290)*
 - [outline](https://github.com/sanjay3290/ai-skills/tree/main/skills/outline) - Search, read, create, and manage documents in Outline wiki instances (cloud or self-hosted). *By [@sanjay3290](https://github.com/sanjay3290)*
+- [polis-protocol](https://github.com/yehudalevy-collab/polis-protocol) - Markdown coordination protocol for multi-vendor agent teams. Signed capability cards, ε-greedy bandit routing that learns from settled contracts, chavruta paired review, self-amending constitution. Vendor-agnostic across Claude Code, Codex, Gemini. *By [@yehudalevy-collab](https://github.com/yehudalevy-collab)*
 - [review-implementing](https://github.com/mhattingpete/claude-skills-marketplace/tree/main/engineering-workflow-plugin/skills/review-implementing) - Evaluate code implementation plans and align with specs.
 - [test-fixing](https://github.com/mhattingpete/claude-skills-marketplace/tree/main/engineering-workflow-plugin/skills/test-fixing) - Detect failing tests and propose patches or fixes.