iagochavarry

iagochavarry / who-built-this-before-me

Public

A Claude skill that checks whether your idea already exists before you build it.

19
3
100% credibility
Found Apr 21, 2026 at 19 stars -- GitGems finds repos before they trend. Get early access to the next one.
Sign Up Free
AI Analysis
AI Summary

A skill for AI coding tools that scans for existing projects matching your idea, summarizes the landscape, and advises whether to build new, fork, contribute, use existing, or investigate further.

How It Works

1
🔍 Discover the idea checker

While browsing tips for smarter coding, you find this helpful skill that checks if your project idea already exists.

2
➕ Add it easily

You simply copy it into your AI coding companion's skills area, and it's ready to use.

3
💬 Open your AI chat

Fire up your favorite AI coding helper where you brainstorm and build.

4
💡 Share your idea

Tell it something like 'I'm thinking of building a tool that does X' and it understands right away.

5
Describe your idea
❓
Keep it vague

It asks a quick question to clarify before searching.

🎯
Be specific

It jumps straight into checking what's out there.

6
📊 Get your report

You receive a tidy summary of similar projects, common patterns, unique angles, and a clear verdict like 'build it' or 'use this one'.

✅ Decide confidently

Now you save time by building fresh, improving an existing project, or picking the best ready-made option.

Sign up to see the full architecture

5 more

Sign Up Free

Star Growth

See how this repo grew from 19 to 19 stars Sign Up Free
Repurpose This Repo

Repurpose is a Pro feature

Generate ready-to-use prompts for X threads, LinkedIn posts, blog posts, YouTube scripts, and more -- with full repo context baked in.

Unlock Repurpose
AI-Generated Review

What is who-built-this-before-me?

This is a Claude skill repo on GitHub that scans for existing projects matching your idea before you code it up. Drop a pitch like "I'm thinking of building a CLI for OpenAPI-to-Postgres migrations" into Claude Code or OpenCode, and it delivers a concise report: restated idea, landscape table of matches and abandoned repos, common patterns, differentiator check, and a verdict like "Build it" or "Fork X." It's a claude skills github example aimed at killing dumb duplicates early, installable via git clone into ~/.claude/skills/ for seamless claude github integration.

Why is it gaining traction?

In a sea of claude skills library entries and claude skills marketplace options, this stands out with its structured one-screen output—no rambling, just actionable buckets like direct hits versus partials. The auto-trigger on phrases like "should I build" hooks devs mid-brainstorm, and cross-compatibility with OpenCode broadens appeal beyond claude github copilot users. At 19 stars, it's niche but shares claude skills download simplicity for quick claude skill creator experiments.

Who should use this?

Solo devs or indie hackers validating side projects before committing weekends. Backend engineers pondering niche CLIs, or frontend folks eyeing component libs, especially if you're already in Claude Code workflows. Pairs well with claude github actions for repo scouting, skipping manual "already exists?" Googles.

Verdict

Try it if you're deep in claude skills 2.0 and claude github connector setups—solid docs and zero setup friction make it a low-risk claude skills repo add-on. But with 19 stars and 1.0% credibility score, it's pre-maturity; treat verdicts as starting points, not gospel, until more claude skills examples validate it.

(178 words)

Sign up to read the full AI review Sign Up Free

Similar repos coming soon.