Use Claude in Cursor through SeaLink
Pay in USD via Stripe, keep billing records, no separate Anthropic account needed.
What you'll build
A Cursor setup that calls Claude Sonnet 4.6 through SeaLink's OpenAI-compatible endpoint. Same UX as native Claude in Cursor, but billed via your SeaLink balance with Singapore billing.
1. Get a SeaLink API key
Sign up, verify your email, then copy your default key from the dashboard. The first $1 trial credit is on the house.
2. Configure Cursor
Open Cursor → Settings (Cmd/Ctrl + ,) → Models. Toggle 'Override OpenAI Base URL', paste the SeaLink endpoint, and add the SeaLink model IDs.
{"openai_api_key": "<your-sealink-key>","openai_base_url": "https://api.sealink.asia/v1","custom_models": ["claude-sonnet-4-6","claude-haiku-4-5"]}
3. Verify
Click 'Verify' in Cursor's settings. Then pick claude-sonnet-4-6 in the chat panel and ask it to refactor a function. Tokens will show up in your SeaLink dashboard within seconds.
4. (Optional) Set a budget cap on this key
Cursor can be expensive when used heavily. Set a $50 monthly cap on the API key so a runaway autocomplete loop can't drain your balance.