diff --git a/docs/community-projects.md b/docs/community-projects.md
index b61c2478..a177ad01 100644
--- a/docs/community-projects.md
+++ b/docs/community-projects.md
@@ -35,6 +35,7 @@ Self-hostable servers that implement the MCP Registry API specification.
 - [mcp-insights](https://github.com/joelverhagen/mcp-insights/) - Analytics and insights for the MCP Registry
 - [mcp-registry-cli](https://pypi.org/project/mcp-registry-cli/) - CLI tool to navigate the MCP registry servers
 - [OtherVibes/mcp-publish-action](https://github.com/OtherVibes/mcp-publish-action) - GitHub Action for publishing MCP servers to the official registry
+- [polygraph](https://polygraph.so) - Independent behavioral security grades (A–F) for MCP servers from an open, reproducible harness, published as an adoption-ranked index with per-server reports
 
 ## Adding Your Project