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mit-licensing

@joe-re/eyes-on-claude-code
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Audit dependency licenses for MIT compatibility. Use when the user wants to check if their project's dependencies are compatible with MIT license, find problematic licenses (GPL, AGPL, etc.), or generate a license audit report. Supports Node.js (npm/pnpm) and Rust (Cargo) projects.

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SKILL.md

name mit-licensing
description Audit dependency licenses for MIT compatibility. Use when the user wants to check if their project's dependencies are compatible with MIT license, find problematic licenses (GPL, AGPL, etc.), or generate a license audit report. Supports Node.js (npm/pnpm) and Rust (Cargo) projects.
allowed_tools Bash, Read, Glob, Write

MIT License Compatibility Audit

Check project dependencies for licenses incompatible with MIT.

Workflow

1. Collect License Data

Node.js (pnpm):

pnpm licenses list --json

Node.js (npm):

npx license-checker --json

Rust:

cargo metadata --format-version 1

2. Identify Problematic Licenses

Incompatible with MIT (block release):

  • GPL, GPLv2, GPLv3
  • AGPL, AGPLv3
  • SSPL, BUSL, CPAL, EUPL

Requires investigation:

  • LGPL (may be acceptable depending on linking)
  • UNKNOWN, UNLICENSED, SEE LICENSE IN LICENSE
  • CC-BY-* (requires attribution)

Generally compatible:

  • MIT, ISC, BSD-2-Clause, BSD-3-Clause
  • Apache-2.0 (include NOTICE if present)
  • MPL-2.0 (disclose modifications to MPL files)
  • Unlicense, CC0-1.0, WTFPL

Rust dual-licensing:

  • MIT OR Apache-2.0 → Choose MIT, compatible
  • GPL OR MIT → Choose MIT, compatible

3. Generate Report

Report format:

# License Audit Report

## Summary
- Total packages: [count]
- Compatible: [count]
- Requires attention: [count]
- Incompatible: [count]

## Incompatible Licenses
| Package | License | Action Required |
|---------|---------|-----------------|
| [name]  | GPL-3.0 | Remove or find alternative |

## Requires Attention
| Package | License | Notes |
|---------|---------|-------|
| [name]  | UNKNOWN | Verify license manually |
| [name]  | CC-BY-4.0 | Add attribution |

## Compatible Licenses
[List of packages grouped by license type]