Adding your API keys (Anthropic, OpenAI, OpenRouter)

AI write assist requires you to supply your own API key. This keeps costs under your control and ensures your writing stays private.

Where to add keys

Go to your Dashboard → Settings → AI tab.

Supported providers

Anthropic (recommended)
Uses Claude models (default: claude-sonnet-5). Best for nuanced prose continuation and world-aware context handling.

1. Create an account at console.anthropic.com
2. Generate an API key
3. Paste it into the Anthropic key field and click Save

OpenAI / OpenRouter (OpenAI-compatible)
Any provider with an OpenAI-compatible API — OpenRouter, Together AI, and others.

1. Enter the Base URL for the provider
2. Enter the model name
3. Enter your API key
4. Click Save

Security

Your API keys are encrypted with AES-256-GCM before being stored. The raw key is never stored in plaintext. Keys are decrypted server-side only when making AI requests on your behalf and are never exposed to other users.

Desktop app keys

In the Studio desktop app, AI provider configuration lives at Dashboard → Desktop → AI Settings (not in Profile). Keys are stored in the OS keychain — Windows Credential Manager on Windows, Keychain on macOS — and never written to disk. See the "AI write assist in Studio" help article for the full setup flow.