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Karellen-rr-MCP – MCP server that gives LLMs rr reverse debugging
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arcivanov
113mo ago
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Turn failed Python tests and CI runs into replayable debug sessions.
33 starsPython
Retrace – reverse debugging for production CPython applications
by L15p3r·May 12, 2026·14 points·4 comments
AI Analysis
●●●BangerZero to OneWizardry
Record production Python bugs and step backwards from crash to cause in VS Code.
Strengths
- •Records Python/external boundary instead of syscalls for low overhead.
- •Sub-0.1% latency impact on I/O-bound Flask and Django workloads.
- •Deterministic replay of network, DB, and randomness without live services.
Weaknesses
- •Threading support is currently experimental and can diverge.
- •Requires Go toolchain alongside Python for the recording runtime.
Category
Target Audience
Python backend developers, DevOps engineers
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