Why it matters

Anthropic direct is Claude source. Understanding shapes provider.

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The architecture

Direct API + Workbench UI.

Prompt caching + PDF + tool use + Computer Use.

Auth: API keys + workspaces.

Anthropic Workbench + APIDirect APIconsole.anthropic.comWorkbenchprompt dev UIAdvanced featurescache + PDF + computer useAnthropic API vs Bedrock vs Vertex Claude: same models, different auth + regions
Anthropic Workbench.
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How it works end to end

API keys + workspaces.

Prompt caching for cost.

PDF + vision support.

Computer Use for agents.