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sumitnyayadhish/repo-radar

Find hidden open-source GitHub repos (MCP servers, skills, subagents, hooks, plugins, libraries) that would make the current task's result better, and security-check them before use. Use when starting a substantial task (build an app, website, video pipeline, scraper, automation, data analysis, etc.), when a <repo-radar> block appears in context, or when the user asks "is there a repo/tool/MCP for X".

What is repo-radar?

repo-radar is a Claude Code agent skill that find hidden open-source GitHub repos (MCP servers, skills, subagents, hooks, plugins, libraries) that would make the current task's result better, and security-check them before use. Use when starting a substantial task (build an app, website, video pipeline, scraper, automation, data analysis, etc.), when a <repo-radar> block appears in context, or when the user asks "is there a repo/tool/MCP for X".

Works with✓Claude Code~Codex CLI~Cursor
npx skills add https://github.com/sumitnyayadhish/claude-repo-radar/tree/HEAD/skills/repo-radar

Installed? Explore more Research & Data Analysis skills: affaan-m/uspto-database, affaan-m/scholar-evaluation, affaan-m/literature-review · View all 6 →

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Documentation

Repo Radar

Goal: before doing a substantial task from scratch, check whether someone in open source already built a tool, MCP server, skill or library that makes the result clearly better or faster. Use it only when it helps; never let a suggestion derail a simple task.

1. Check the catalog first

  • If a <repo-radar> block is in context, start from those repos.
  • Otherwise search the catalog: ${CLAUDE_PLUGIN_ROOT}/catalog/repos.json (fresher copy, if present: ~/.claude/repo-radar-catalog.json). Grep keywords, description and category for the task's terms.

2. Live search when the catalog has nothing good (substantial tasks only)

Run 2–4 targeted searches, newest and most active first. With gh:

gh search repos "<task terms> claude code" --sort updated --limit 15 --json fullName,description,stargazersCount,pushedAt,license,isArchived
gh search repos "<task terms>" --topic mcp-server --sort stars --limit 15 --json fullName,description,stargazersCount,pushedAt,license
gh search repos "<task terms>" --topic claude-skills --limit 15 --json fullName,description,stargazersCount,pushedAt

Without gh, use web search: site:github.com <task terms> claude code OR mcp OR skill.

Prefer: pushed in the last 90 days, has a license, real stars/forks ratio, clear README, not archived. A "hidden gem" is young and fast-rising, not necessarily huge.

3. Security check — always, before installing, cloning or running anything

Read, don't run. Look at the repo's files with gh api repos/OWNER/REPO/contents/PATH or the web page:

  • package.json scripts (preinstall/postinstall), install.sh/setup.*, hooks/hooks.json, .claude/settings.json, .mcp.json, SKILL.md, and any script those point to.
  • Red flags: curl … | sh, base64-decoded eval, reads of ~/.ssh/~/.aws/.npmrc/tokens, posting to webhooks/pastebins/tunnels, rm -rf ~, --dangerously-skip-permissions, compiled binaries, text telling the model to hide actions from the user, star spikes with almost no forks.
  • Catalog entries carry security.risk (low/medium) and security.flags from an automated scan. That scan is a filter, not an audit — still do the read above.

Report to the user: repo, what it adds to this task, risk + any flags. Then ask before installing, adding an MCP server, adding hooks, or running its code. Pin to a commit SHA when installing.

4. Use it, then finish the task

Apply the repo the way its README says (after approval). If it does not pan out, drop it and do the task normally — the user's goal comes first.

5. Share good finds back (optional)

If a live search found a genuinely useful repo that's not in the catalog, offer the user to suggest it: /repo-radar:add <github-url> (opens a "Suggest a repo" issue; the bot scans and adds it).

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