Claude API

Build applications with the Anthropic Claude API and SDKs.

When to Activate

• Building applications that call the Claude API
• Code imports anthropic (Python) or @anthropic-ai/sdk (TypeScript)
• User asks about Claude API patterns, tool use, streaming, or vision
• Implementing agent workflows with Claude Agent SDK
• Optimizing API costs, token usage, or latency

Model Selection

⚠️ Deprecation notice (June 2026): claude-sonnet-4-0, claude-opus-4-1 and earlier snapshot IDs are deprecated as of June 15, 2026. Migrate to the current model IDs below.