Detects schema drift, breaking changes, and behavioral regressions in MCP server contracts.
Sponsored
Truss Contract Monitor acts as a guardian for your MCP server contracts. It connects to any MCP server, takes snapshots of its tool schemas, and proactively alerts you to any schema drift or breaking changes. Beyond just schema validation, it also allows for behavioral regression testing using golden tests, ensuring that even if the schema remains constant, the actual responses maintain their expected structure. This continuous monitoring helps maintain stability and reliability in your MCP server integrations.
Key Features
01Detects schema drift in MCP server tool inputs
02Compares contract snapshots and checks live server against its last snapshot
03Identifies breaking changes such as removed tools or altered parameters
040 GitHub stars
05Generates shields.io status badges for README integration
06Performs behavioral regression tests with golden prompts and response shape validation
Use Cases
01Validate the consistency of responses from MCP tools using golden test scenarios
02Integrate contract stability status directly into project documentation via badges
03Continuously monitor MCP servers for unexpected changes to their tool schemas
