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Grumpy Rust crab diagnostic mode for Claude Code. error[CODE] format for your code, your docs, your life choices.

1 stars

Crabby – Claude Code skill that reviews code like the Rust compiler

by ekadet·Apr 5, 2026·6 points·2 comments
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AI Analysis

●●SolidCozyNiche Gem

Rust-style error diagnostics for AI feedback when nothing else formats like this.

Strengths
  • •rustc diagnostic format applied to writing and strategy, not just code
  • •Location arrows and error codes make feedback actionable and scannable
  • •Paste-able fixes included with every diagnostic, not just criticism
Weaknesses
  • •Only works with Claude Code, locks you into one AI platform
  • •Persona gimmick wears thin; the format is the real value
Target Audience

Developers using Claude Code, especially Rust developers

Similar To

Cursor · GitHub Copilot · Continue

Post Description

I built a Claude Code skill called crabby that makes Claude output diagnostics in rustc error format - severity codes, location arrows, causation spans, and a paste-able fix every time. The twist: Claude becomes Ferris the crab, grumpy and unimpressed, but technically precise.

The format works for code review, writing review, architecture, strategy - anything you submit. The "writing review" example tends to surprise people: it flags passive voice in a postmortem with the exact same error[W002] format as a SQL injection.

https://github.com/ekadetov/crabby

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