Claude API skill: current API and SDK reference for Claude

Anthropic’s skill that gives Claude up-to-date Claude API reference when you build apps on Claude.

Type
Skill
Publisher
Anthropic
Category
Coding
Works in
Claude Code (bundled)

Its description covers model IDs, pricing, parameters, streaming, tool use, MCP, agents, caching, token counting and model migration. Anthropic’s Agent Skills overview says it provides API reference, SDK documentation and best practices for eight programming languages, comes bundled with Claude Code and can also be installed from the skills repository.

Source: skills/claude-api in Anthropic’s skills repository and the Agent Skills overview.

What it does
Gives Claude current reference on Claude model IDs, pricing, parameters, tool use, caching and SDKs.
How to install
Claude Code: bundled, no install needed.
From Anthropic's skills repository:
/plugin marketplace add anthropics/skills
/plugin install claude-api@anthropic-agent-skills
Source
github.com
Last checked

Questions

What does the claude-api skill do?

It gives Claude current reference material for the Claude API and Anthropic SDKs, including model IDs, pricing, parameters, streaming, tool use, caching and token counting.

Do I need to install it?

In Claude Code it is bundled, so no install is needed. Outside it, the skills repository lists the install commands shown above.

When does Claude use it?

Its description tells Claude to read it whenever a prompt names Claude or Anthropic, asks about an LLM’s pricing, limits or caching, or involves building an LLM-powered app.

Sources: names, descriptions and install commands come from Anthropic’s skills repository (github.com/anthropics/skills), its official plugin marketplace (github.com/anthropics/claude-plugins-official) and the Claude docs linked on each listing. Promptline is not affiliated with Anthropic.

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