v0.2.2

First public release.

An MCP server that checks whether your idea already exists before your
agent builds it. Searches GitHub, npm, and Python repos, drops anything
abandoned, and hands the surviving candidates to your agent to judge.

claude mcp add reuse-before-generate -- npx -y reuse-before-generate

What's in it

• One tool, check_before_building, that returns maintained alternatives
  plus scoring instructions — the calling agent does the semantic judgment
  using the session already running, so no separate API key is needed.
• Search across three lanes: GitHub relevance, a stars:0..3 lane for
  small or brand-new repos that GitHub's ranking buries, and a
  language:python lane.
• A "maintained" filter based on recent activity, deliberately not on
  star count — a 0-star repo doing exactly your job is the duplicate most
  worth catching.
• Partial failures are named in the output, so fewer results are never
  silently mistaken for a complete search.

Measured, not asserted

71 offline tests, plus a scored recall eval over 12 known cases:

Target found in the top 10	11 of 11
Found in the top 5	10 of 11
False positives on the true-negative case	0

Methodology and known gaps: docs/findings.md.

Requires Node 18+. MIT.