lemonadesaltbagel / crab
CRAB (Clean Rebuild of Anything's Behavior): rebuild software from behavior, not source code. An MCP-powered toolkit for black-box observation, clean-room reimplementation, and behavioral verification.
Why this job: works in the areas we cover, but does not say which job it does
What it does
The valuable knowledge about a feature is behavioral. Tracing the implementation through binaries, minified bundles or obfuscated code is slow, brittle, and copies expression you don't want. CRAB never captures code, decompilation or stack traces. What it cannot observe becomes an explicit *unknown*, not a silent gap.
Get started
uv tool install "crab-cleanroom[web]"
# Python 3.12+; the command is `crab`
crab install-browser
# Chromium for web targets
crab demo
# observe -> gate -> clean -> verdict on a built-in example- Maintenance
- Active
- Last commit 9 days ago
- Stars
- 304
- +98 this week
- Licence
- Apache-2.0
- Allows business use
- Downloads for
- None listed
- No release files
- Latest version
- None yet
- No releases
- Built with
- Python
- 95% of the code
Is it looked after?
- Contributors
- 1
- Last 90 days
- Issues
- None
- No issues filed
- Pull requests
- 0 merged
- 0 waiting
- Releases
- None
- Never published
- Contributing guide (opens in new tab)
- Security policy (opens in new tab)
- No code of conduct
More: languages, topics and project record
Languages
- Python 95%
- Java 2%
- HTML 2%
- Shell 1%
Topics
- clean-room-reimplementation
- ai-agents
- behavioral-testing
- black-box-testing
- model-context-protocol
- playwright
- reverse-enginnering
- sandboxing
- specification-generation
- software-reimplementation
Project record
- JobOther AI tools
- StatusNew to our list
- Commits7
- Forks44
- Watching34
- CreatedOct 22, 2026
- First seen by usNov 7, 2026
- CheckedNov 12, 2026