# Live Sources

Use WebFetch or browsing when the answer depends on changing Anthropic documentation.

## Browse For These Cases

- Current model IDs, aliases, or deprecations
- Pricing, rate limits, or feature availability
- Newly added tool types or server-side tools
- Exact request fields for Files, Batches, or streaming APIs
- SDK release details when the user asks for version-specific behavior

## Preferred Official Sources

- Main docs hub: `https://docs.anthropic.com/`
- Models overview: `https://docs.anthropic.com/en/docs/about-claude/models/all-models`
- Features overview: `https://docs.anthropic.com/en/docs/build-with-claude/overview`
- Tool use: `https://docs.anthropic.com/en/docs/build-with-claude/tool-use`
- Prompt caching: `https://docs.anthropic.com/en/docs/build-with-claude/prompt-caching`
- API reference: `https://docs.anthropic.com/en/api/`
- Anthropic SDK repositories: Anthropic GitHub org repos for language-specific SDK examples

## Usage Rule

When a question could be stale, prefer the official docs page over memory. Quote briefly, summarize the rest, and link the page you used.
