Can I fetch documentation for specific Elixir library versions?

Yes, by providing the versioned URL (e.g., hexdocs.pm/phoenix/1.7.0) or using the integrated Tidewave MCP for automatic version matching based on your mix.lock.

How does HexDocs Fetcher reduce token usage?

It uses optimized WebFetch prompts to strip away HTML boilerplate and navigation, converting only the essential documentation content into Markdown before passing it to Claude.

Does it handle CSS and Javascript from the documentation pages?

No, it specifically filters out styles and scripts to provide a clean Markdown representation, which is more readable for the AI and saves significant context space.

What documentation types are supported?

The skill can retrieve module documentation, public function specifications, installation guides, API references, and comprehensive library changelogs.

HexDocs Documentation Fetcher

Name: HexDocs Documentation Fetcher
Author: oliver-kriska

byoliver-kriska

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Learning & Documentation

Optimizes Elixir library research by fetching and converting HexDocs content into token-efficient Markdown for Claude.

The HexDocs Fetcher skill enables Claude to efficiently access and process Elixir library documentation from hexdocs.pm. By leveraging the native WebFetch tool with specialized extraction prompts, it converts complex HTML pages into clean, structured Markdown, reducing token consumption by up to 80%. This skill is essential for developers needing precise, up-to-date information on Phoenix, LiveView, Ecto, or any Hex package, ensuring the AI model has accurate context without exceeding context window limits.

Key Features

01Token usage reduction of approximately 80% compared to raw HTML

02Support for fetching specific library versions and changelogs

0362 GitHub stars

04Automatic 15-minute caching for repeated documentation lookups

05Efficient HTML-to-Markdown conversion for all HexDocs pages

06Specialized extraction prompts for modules, function specs, and guides

Use Cases

01Researching specific function signatures and @spec definitions for Elixir modules

02Extracting step-by-step integration guides for unfamiliar Hex libraries

03Auditing library changelogs to resolve version-specific compatibility issues

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add oliver-kriska/claude-elixir-phoenix hexdocs-fetcher

For use in Claude.ai and ChatGPT

Download Skill