Anthropic Docs

Anthropic

September 13, 2026

Official reference for Claude platform capabilities and integration patterns.

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About

Anthropic's authoritative documentation covers the Messages API, tool use, agentic workflows, and Claude model specifications. Includes quickstarts, API reference, and best practices for production deployments. Updated to reflect the latest Claude models and features.

Who is it for

Engineers and developers integrating Claude into applications. Ideal for those building chatbots, agents, or complex reasoning systems.

Why

Maintained directly by Anthropic, this is the canonical reference for all Claude APIs and capabilities. Combines conceptual guides with runnable examples and detailed API specs.

What you learn

How to call the Messages API with different Claude models

Building multi-tool agents with vision and document handling

Prompt engineering and token counting best practices

Production deployment patterns and rate limiting

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