# Code · b12io

> Write, review, fix, optimize, and test code in any language or framework — HTML, CSS, JavaScript, React, Python and the rest — returned as complete copy-pasteable blocks. Also generates a B12 web app or website when someone wants the thing built rather than the source. Use when someone asks for code to be written, explained, reviewed, refactored, commented, or covered by unit tests, including asks like "create a website in HTML and CSS" or "write me a React counter". Do NOT use for work on the user's existing codebase or repository — editing project files, debugging a failing build, running a test suite — the host does that directly. Do NOT use for writing website copy or blog posts, or for designing a logo; those are separate skills.

## Facts
- Page: https://tashan.sh/capability/skill-b12io-code
- tashan id: skill:b12io/code
- Source: https://github.com/b12io/b12-claude-plugin
- Type: skill
- Category: devtools
- tashan score: 35.0 / 100
- Adoption: 17.0
- Upkeep: 65.0
- Freshness: 64.0
- Evidence coverage: 84% of the inputs this score can use
- Health: active
- Instruction depth: not yet graded
- License: Apache-2.0
- Official: no

## Install

```sh
cp -r code ~/.claude/skills/
```

## Security audit
Not scanned. We audit npm-published capabilities; this one has no npm package we can resolve, or has not reached the queue. This is not a clean bill of health.

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Measured 2026-09-12 by tashan (https://tashan.sh) from public evidence. Scorer s5.