mcp-recorder – VCR.py for MCP servers. Record, replay, verify
Catches silent MCP breakage VCR.py never could—schema drift detection.

Intercepts HTTP transport layer so production code needs zero changes.
Python developers writing integration tests for LLM-powered apps
VCR.py · Betamax · responses
Catches silent MCP breakage VCR.py never could—schema drift detection.
VCR for LLM calls—eliminates API costs and non-determinism in agent testing.
Live feedback on rambling interviews, but Pramp and MockInterview exist.
MCP testing without test code—records, generates mocks, catches Tool Poisoning, gates CI.
Session replay to test converter, but Replay.io and LogRocket already pivot toward this.
Flight recorder for AI agents: record, replay, enforce policies on every LLM call.