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polygraph.so: an independent trust layer for AI tools
Independent A-to-F behavioral security grades for MCP servers, agents, and skills, backed by evidence anyone can re-run. Nobody can pay for a grade.
https://www.polygraph.soOpens ChatGPT on the web or desktop and asks it to use the WebMCP tools available here.
Connect straight to this server’s public endpoint.
https://polygraph.so/api/mcpWe add this server to your workspace, then open Studio — saved access, one connection to many servers, with a history of what ran.
Last probed Sep 18, 2026 · polygraph.so
3tools discovered
Check a server's published polygraph grade
Read a server's published behavioral grade (A-F) from polygraph.so in under a second; no execution.
List servers with a published grade
Servers with a published polygraph grade, sorted A-first then by ref.
Request a polygraph grade for an MCP server
Hosted grading is discontinued.
Get your MCP into directories
A working endpoint is step one. Directory coverage is the coordinated launch across ChatGPT, Claude, Cursor, the MCP Registry, and community indexes.
Directory coverage for brandsIndependent A-to-F behavioral security grades for MCP servers, agents, and skills, backed by evidence anyone can re-run. Nobody can pay for a grade.
Use the MCP endpoint listed on this page in your MCP client configuration. One-click install pills support Claude, Cursor, VS Code, and other hosts. Copy the remote MCP URL if your client needs a manual entry.
MCPBundles probed 3 tools on the live server. The tool list on this page reflects what was discovered at the last refresh — connect your client to see the full set available to your session.
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Other MCP servers in this category from the directory index
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