Connect Anthropic

Use the Anthropic API format when your service speaks the Anthropic Messages API.

Add the service

1. Open Settings and go to Services.
2. Add a new service or edit an existing one.
3. Set API Format to Anthropic.
4. Enter a recognizable Name.
5. Keep the pre-filled Service Address for Anthropic, or replace it with your provider's address.
6. Enter and save the Anthropic Access Key.
7. Add the Model ID from your Anthropic console or provider documentation.
8. Click Test Connection.

Open Settings in SpotAsk

Opens the Service page in SpotAsk. If SpotAsk is not installed this link does nothing — open it by hand instead: SpotAsk menu bar icon → Settings... → Service, or press ⌘ + , to open Settings. Direct link: spotask://settings/provider

Address examples

Use Service Root for a base address:

https://api.anthropic.com/v1

Use Full Request Address for the complete Messages endpoint:

https://api.anthropic.com/v1/messages

Get a key for Anthropic

SpotAsk pre-fills https://api.anthropic.com/v1. Create a key at console.anthropic.com/settings/keys, paste it into Access Key, and click Test Connection. The Messages API is documented at docs.claude.com/en/api/messages.

Notes

Model discovery works with Service Root mode when Anthropic exposes a model list. With Full Request Address, add the model manually.

The service must support the Anthropic API request format. Anthropic-compatible proxies and gateways can be used the same way.

Related: Service Root vs Full Request Address, Providers & Models, BYOK Menu Bar AI Assistant