Providers
Verified for v0.4.4 on
Anthropic
Use the Anthropic preset to send messages through Anthropic's Messages API. Prompts, included conversation context, attachments, and request metadata are processed by Anthropic under your account and Anthropic's current terms.
Prerequisites#
- An Anthropic Console account in a supported region
- An API key and active billing or credits
- Access to the model ID you plan to use
Configure Sythoria#
- Create a key in the Anthropic Console.
- In Sythoria, open Settings and add a model.
- Select Anthropic.
- Confirm the preset values and paste the API key.
- Save and run the connection check.
| Setting | Desktop v0.4.4 value |
|---|---|
| API base | https://api.anthropic.com/v1/messages |
| Default model | claude-opus-5 |
| API format | Anthropic Messages API |
The default comes from the desktop source and can become unavailable. Check the official Anthropic model overview and use an exact model ID available to your key.
Some models have limited eligibility or additional retention terms. Confirm access and data retention in Anthropic's current documentation before using sensitive content.
Errors#
| Symptom | Check |
|---|---|
| 401 | Replace a revoked/incorrect key and ensure whitespace was not copied |
| 403 region | Check Anthropic's supported-region policy and contact Anthropic support; do not circumvent account restrictions |
| 403 model | Choose a model enabled for the account |
| 404 model | Copy the exact current model ID from the Console or official model page |
| 429/529 | Wait for the provider limit or overload condition to clear, then retry |
If a key may have appeared in a prompt, log, screenshot, or repository, revoke it in the Anthropic Console before creating a replacement.