# Context7

> Retrieve up-to-date documentation for software libraries, frameworks, and components via the Context7 API. This skill should be used when looking up documentation for any programming library or framework, finding code examples for specific APIs or features, verifying correct usage of library functions, or obtaining current information about library APIs that may have changed since training.

Source: https://skillsagentes.com/skills/intellectronica/agent-skills/context7
Repository: https://github.com/intellectronica/agent-skills
Author: intellectronica
License: CC0-1.0
Updated: hace 6 meses
Context cost: 98 tok installed, 792 tok once triggered, 792 tok with every bundled file
Bundle: 1 file, 3 KB
Permissions requested: none declared

## Install

```bash
npx -y skills add intellectronica/agent-skills --skill context7 --agent claude-code
```

## What it does

- Busca el ID de una librería vía la API de búsqueda de Context7 usando curl
- Recupera documentación actualizada de esa librería con el endpoint de contexto
- Permite obtener ejemplos de código y uso correcto de APIs específicas

## Use it when

- Se necesita buscar documentación de cualquier librería o framework de programación
- Se buscan ejemplos de código para APIs o funciones específicas
- Se necesita verificar el uso correcto de funciones de una librería
- Se requiere información actual sobre APIs que pudieron haber cambiado desde el entrenamiento

## What triggers it

- "Busca la documentación actual de useState en React"
- "¿Cómo se hace inyección de dependencias en FastAPI?"
- "Necesito la documentación del app router de Next.js"

## Before you install

- Requiere curl y opcionalmente jq; no se necesita API key para uso básico (con límite de tasa).
- Needs on PATH: curl, jq

## Files

- SKILL.md — 3 KB

## SKILL.md

Reproduced verbatim from intellectronica/agent-skills under CC0-1.0. This section is the upstream document and is in English.

# Context7

## Overview

This skill enables retrieval of current documentation for software libraries and components by querying the Context7 API via curl. Use it instead of relying on potentially outdated training data.

## Workflow

### Step 1: Search for the Library

To find the Context7 library ID, query the search endpoint:

```bash
curl -s "https://context7.com/api/v2/libs/search?libraryName=LIBRARY_NAME&query=TOPIC" | jq '.results[0]'
```

**Parameters:**
- `libraryName` (required): The library name to search for (e.g., "react", "nextjs", "fastapi", "axios")
- `query` (required): A description of the topic for relevance ranking

**Response fields:**
- `id`: Library identifier for the context endpoint (e.g., `/websites/react_dev_reference`)
- `title`: Human-readable library name
- `description`: Brief description of the library
- `totalSnippets`: Number of documentation snippets available

### Step 2: Fetch Documentation

To retrieve documentation, use the library ID from step 1:

```bash
curl -s "https://context7.com/api/v2/context?libraryId=LIBRARY_ID&query=TOPIC&type=txt"
```

**Parameters:**
- `libraryId` (required): The library ID from search results
- `query` (required): The specific topic to retrieve documentation for
- `type` (optional): Response format - `json` (default) or `txt` (plain text, more readable)

## Examples

### React hooks documentation

```bash
# Find React library ID
curl -s "https://context7.com/api/v2/libs/search?libraryName=react&query=hooks" | jq '.results[0].id'
# Returns: "/websites/react_dev_reference"

# Fetch useState documentation
curl -s "https://context7.com/api/v2/context?libraryId=/websites/react_dev_reference&query=useState&type=txt"
```

### Next.js routing documentation

```bash
# Find Next.js library ID
curl -s "https://context7.com/api/v2/libs/search?libraryName=nextjs&query=routing" | jq '.results[0].id'

# Fetch app router documentation
curl -s "https://context7.com/api/v2/context?libraryId=/vercel/next.js&query=app+router&type=txt"
```

### FastAPI dependency injection

```bash
# Find FastAPI library ID
curl -s "https://context7.com/api/v2/libs/search?libraryName=fastapi&query=dependencies" | jq '.results[0].id'

# Fetch dependency injection documentation
curl -s "https://context7.com/api/v2/context?libraryId=/fastapi/fastapi&query=dependency+injection&type=txt"
```

## Tips

- Use `type=txt` for more readable output
- Use `jq` to filter and format JSON responses
- Be specific with the `query` parameter to improve relevance ranking
- If the first search result is not correct, check additional results in the array
- URL-encode query parameters containing spaces (use `+` or `%20`)
- No API key is required for basic usage (rate-limited)

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Skills Agentes — https://skillsagentes.com/skills/intellectronica/agent-skills/context7