- Get API access — Sign up at console.anthropic.com and create an API key.
- Install the SDK —
npm install @anthropic-ai/sdkorpip install anthropic - Make a call —
const msg = await anthropic.messages.create({ model: "claude-sonnet-4-6", max_tokens: 1024, messages: [{role:"user", content:"Hello!"}] }) - Try tool use — Define tools with name, description, and input_schema. Claude decides when to call them.
✦
🤖 AI Agents & APIs★ Featured
Anthropic API
by Anthropic
Production access to Claude models via the Anthropic API. Supports the Messages API, streaming, vision, tool use, and a 200K token context window.
Claudetool use200K contextstreamingvision
Quick Start
How-To Guides
2Define tools as JSON schema objects. Pass in
tools array. When Claude uses a tool, it returns tool_use content blocks. Process the tool call, then send a tool_result user message back.Tool Info
- Company
- Anthropic
- Category
- 🤖 AI Agents & APIs
- How-to Guides
- 2
Tags
Claudetool use200K contextstreamingvision
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