Sell leftover Anthropic credits.
Unused Anthropic prepaid can be listed. Surplus probes the key. You earn per request and receive batched USDC on Base.
API credits and Claude subscriptions
Use an Anthropic Console API key with access to the models you intend to list. A Claude subscription or Claude Code login is not an API credit balance. Keep the listing key separate from the key used by your own applications.
What this is
Connect an Anthropic key (sk-ant-…). Surplus probes it and stores it encrypted per listing. This app never keeps the key.
Autopilot pricing
Autopilot recognizes Anthropic as a prepaid provider and starts with a 0.05× minimum. You can raise the optional minimum if you want a smaller discount.
Questions
- Does this list Claude.ai seats?
- No. It lists an Anthropic API key on Surplus. Consumer Claude subscriptions are not API credits.
- Can I set a minimum price?
- Yes. Leave it blank for the automatic minimum, or raise it. Autopilot will never price below your setting.