Deja Vu — Development skill for Claude Code

deja-vu


The skill that gives your agent the feeling it has seen this problem before.

A skill for Claude Code and Codex that runs a structured prior-art hunt **before** anything custom gets built.

The problem

You're mid-task, someone says "we need a rate limiter" (or an auth flow, a retry helper, a link checker for the docs), and the reflex is to open a new file and start writing it. Later you find out a maintained library already handled the edge cases you just hit — this skill is the pause that checks for that library first.

deja-vu asks "has someone already solved this?" through a ten-stage loop, then backs whatever it finds with the actual repos, license, and health data it checked, not a star count. Full design rationale and the failure mode each stage addresses: [`docs/design.md`](docs/design.md).

Install

**Option A — git clone + symlink** (full control over the checkout location):

git clone https://github.com/vishnujayvel/deja-vu "$HOME/workplace/deja-vu"
mkdir -p "$HOME/.claude/skills"
ln -s "$HOME/workplace/deja-vu" "$HOME/.claude/skills/deja-vu"

Verify the symlink resolves:

ls -la "$HOME/.claude/skills/deja-vu"

**Option B — [`npx skills`](https://github.com/vercel-labs/skills)** (fetches directly from GitHub, no manual clone):

npx skills add vishnujayvel/deja-vu

Either way, that's the whole install — `SKILL.md`'s frontmatter is what Claude Code reads to decide when to bring the skill in.

**Option C — native plugin (Claude Code or Codex)**: this repo also ships a repo-local marketplace (`.claude-plugin/marketplace.json`) that both clients' native plugin installers can read directly — no manual symlink, and the client manages updates/removal for you.

Both CLIs accept the GitHub shorthand directly, no local checkout required:

claude plugin