Open source
Check our records.
mcp-recorder is the open-source part of Cresec: a hash-chained, signed log of tool calls, and a verifier anyone can run offline.
What it does
Records MCP calls from Claude Code, Claude Desktop and Cursor. Optionally denies or holds calls that delete, exfiltrate or spend. Exports a bundle with a dependency-free verifier.
Same format as Cresec tools
Cresec tools write records in the recorder’s format, so the same verifier checks them.
Limits
Running business routines rather than coding agents? See how Cresec tools work.