Claude API

by anthropics

Claude API is an AI Engineering skill for Claude Code, published by anthropics in skills.

168.6K stars20.1K forkson anthropics/skillsAdded 2026/08/13Repository updated 2026/08/07

View source on GitHub Download repo ZIP

agent-skills

Install in seconds

Install Claude API

Copy Claude API 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/anthropics/skills/tree/main/skills/claude-api ~/.claude/skills/claude-api

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/anthropics/skills.git

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

In this catalog

Source file: skills/claude-api/SKILL.md in anthropics/skills
Installs to: ~/.claude/skills/claude-api
Collection: One of 18 skills cataloged from this repository
Category: AI Engineering — 2451 skills

What Claude API does

Claude API provides reference documentation for the Anthropic SDK, covering model IDs, pricing, parameters, streaming, tool use, MCP, agents, caching, token counting, and model migration. Use it before writing Claude integration code or when asked about Claude/Anthropic APIs, models, or limits.

Claude API is cataloged under AI Engineering on DirSkills. Claude API comes from a repository tagged agent-skills.

Documentation

README

Excerpt

Building LLM-Powered Applications with Claude

This skill helps you build LLM-powered applications with Claude. Choose the right surface based on your needs, detect the project language, then read the relevant language-specific documentation.

Before You Start

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

Commands Claude API provides

Slash commands named in this skill’s SKILL.md, listed in the order they first appear.

/claude-api

Frequently asked about Claude API

What else does anthropics publish alongside Claude API?
Claude API is one of 18 skills that DirSkills catalogs from anthropics/skills, the repository it ships in. Its siblings there include Algorithmic Art, Brand Guidelines and Canvas Design. Each one is a separate skill with its own page in this directory, installs the same way Claude API does, and is maintained by anthropics in that same repository. The rest of the collection is listed on the anthropics/skills page.
How does Claude API compare to other AI Engineering skills?
Claude API ranks #20 by stars among the 2451 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 Claude API against them. Open each page to compare what they document and how they install.