RAG Check First

RAG Check First is an AI Engineering skill for Claude Code, published by lyonzin in knowledge-rag.

265 stars38 forkson lyonzin/knowledge-ragAdded 2026/09/02+2% in starsRepository updated 2026/09/01

antigravityclaudeclaude-codeclaude-code-clicodexcursor-aidocument-searchhybrid-searchinteligencia-artificialknowledge-baselocal-aimcpmcp-serverragrag-chatbotrag-pipelinererankingretrieval-augmented-generationsemantic-searchvector-database

Install in seconds

Install RAG Check First

Copy RAG Check First into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/lyonzin/knowledge-rag/tree/master/skills/foundation/rag-check-first ~/.claude/skills/rag-check-first

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/lyonzin/knowledge-rag.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: skills/foundation/rag-check-first/SKILL.md in lyonzin/knowledge-rag
Installs to: ~/.claude/skills/rag-check-first
Collection: One of 10 skills cataloged from this repository
Category: AI Engineering — 2631 skills

What RAG Check First does

RAG Check First requires a local knowledge search before answering technical questions, code requests, or team-specific factual claims. Use it to ground responses in indexed docs, ADRs, runbooks, and prior work.

RAG Check First is cataloged under AI Engineering on DirSkills. RAG Check First comes from a repository tagged antigravity, claude, claude-code, claude-code-cli and codex.

Documentation

README

Excerpt

rag-check-first — search before you speak

When to use this skill

Trigger this skill before answering whenever the user asks:

A technical "how" or "why" question (design, implementation, security, ops)
Something about "our" / "the project" / "the team" / a named component
A request to write, refactor, review, or debug code
A question that could plausibly be answered by an ADR, runbook, README, or spec

Trigger keywords / patterns (non-exhaustive):

"how does X work", "why did we", "what is the pattern for"
"add a", "implement", "refactor", "fix", "debug"
Any mention of a file, module, function, feature, or component by name
Any question about historical decisions ("we used to", "the old way")

Do NOT trigger for:

This is the opening of the README. Read the full README on GitHub.

Frequently asked about RAG Check First

What else does lyonzin publish alongside RAG Check First?
RAG Check First is one of 10 skills that DirSkills catalogs from lyonzin/knowledge-rag, the repository it ships in. Its siblings there include RAG Code Review, RAG Evaluate Quality and RAG Index Decisions. Each one is a separate skill with its own page in this directory, installs the same way RAG Check First does, and is maintained by lyonzin in that same repository. The rest of the collection is listed on the lyonzin/knowledge-rag page.
How does RAG Check First compare to other AI Engineering skills?
RAG Check First ranks #2236 by stars among the 2631 AI Engineering skills in this catalog. The most-starred ones next to it are Architecture Decision Records, AI-First Engineering and Agentic OS. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of RAG Check First against them. Open each page to compare what they document and how they install.