claude-api
Installation
SKILL.md
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
| Model | ID | Best For |
|---|---|---|
| Opus 4.6 | claude-opus-4-6 |
Complex reasoning, architecture, research |
| Sonnet 4.6 | claude-sonnet-4-6 |
Balanced coding, most development tasks |
| Haiku 4.5 | claude-haiku-4-5-20251001 |
Fast responses, high-volume, cost-sensitive |