# Library Documentation Lookup

Fetch current library and framework docs through Context7 instead of memory.

- Repository: https://github.com/affaan-m/ECC (294725 stars)
- Category: Engineering
- License: MIT
- Last updated: 2026-10-30
- Runs scripts: no, instructions only

## Install

Claude Code: `npx skills add affaan-m/ECC --skill documentation-lookup -g -a claude-code -y`
Codex: `npx skills add affaan-m/ECC --skill documentation-lookup -g -a codex -y`
Cursor: `npx skills add affaan-m/ECC --skill documentation-lookup -g -a cursor -y`
Gemini CLI: `npx skills add affaan-m/ECC --skill documentation-lookup -g -a gemini-cli -y`
Claude Code plugin marketplace: `/plugin marketplace add affaan-m/ECC`

## Description

Use up-to-date library and framework docs via Context7 MCP instead of training data. Activates for setup questions, API references, code examples, or when the user names a framework (e.g. React, Next.js, Prisma).

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

# Documentation Lookup (Context7)

When the user asks about libraries, frameworks, or APIs, fetch current documentation via the Context7 MCP (tools `resolve-library-id` and `query-docs`) instead of relying on training data.

## Core Concepts

- **Context7**: MCP server that exposes live documentation; use it instead of training data for libraries and APIs.
- **resolve-library-id**: Returns Context7-compatible library IDs (e.g. `/vercel/next.js`) from a library name and query.
- **query-docs**: Fetches documentation and code snippets for a given library ID and question. Always call resolve-library-id first to get a valid library ID.

## When to use

Activate when the user:

- Asks setup or configuration questions (e.g. "How do I configure Next.js middleware?")
- Requests code that depends on a library ("Write a Prisma query for...")
- Needs API or reference information ("What are the Supabase auth methods?")
- Mentions specific frameworks or libraries (React, Vue, Svelte, Express, Tailwind, Prisma, Supabase, etc.)

Use this skill whenever the request depends on accurate, up-to-date behavior of a library, framework, or API. Applies across harnesses that have the Context7 MCP configured (e.g. Claude Code, Cursor, Codex).

## How it works

### Step 1: Resolve the Library ID

Call the **resolve-library-id** MCP tool with:

- **libraryName**: The library or product name taken from the user's question (e.g. `Next.js`, `Prisma`, `Supabase`).
- **query**: The user's full question. This improves relevance ranking of results.

You must obtain a Context7-compatible library ID (format `/org/project` or `/org/project/version`) before querying docs. Do not call query-docs without a valid library ID from this step.

### Step 2: Select the Best Match

From the resolution results, choose one result using:

The rest: https://github.com/affaan-m/ECC/blob/HEAD/.agents/skills/documentation-lookup/SKILL.md