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An Anthropic provider forwards Messages requests to Anthropic’s API. Attach it to an AI Gateway resource when you want Claude Code, Claude Desktop, OpenCode, OpenClaw, or any other Anthropic-compatible client to use your org’s Anthropic key. See AI Providers if you haven’t created a provider before. Field options are in Provider Configuration.

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Defaults

Anthropic Models (GET /v1/models) is answered from this provider’s allow and block lists. See Capabilities.

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Configure

  1. Sidebar → AI Gateway → Providers → Create.
  2. Set Provider Type to Anthropic. Name, capabilities, upstream URL, and auth type fill in from the defaults above.
  3. Paste your Anthropic API key.
  4. Set Allow and Block lists. * allows every model key; claude-* is a typical narrower pattern.
  5. Save, then attach the provider to an AI Gateway resource.
Leave the upstream URL as the default unless you are pointing at a compatible Anthropic-style base URL.
Clients can send anthropic-version themselves. You can also set it as a custom header on the provider (anthropic-version: 2023-06-01). A header set on the provider is always sent upstream and overrides the same header from the client.

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Clients