Does this list Claude.ai seats?

No. It lists an Anthropic API key on Surplus. Consumer Claude subscriptions are not API credits.

What if the key is pay-as-you-go?

Use At cost. Floor is 1.0×. There is no point selling below list.

Unused Anthropic prepaid can be listed. Surplus probes the key. Buyers pay per request. You get USDC on Base.

Connect an Anthropic key (sk-ant-…). Surplus probes it and stores it encrypted per listing. This app never keeps the key.

Prepaid is Leftover (0.05×). Pay-as-you-go is At cost (1.0×). Auto-price stays at or above the floor.

Anyone holding unused Anthropic API credits they will not spend before they lapse.

USDC to the signed-in wallet. Revolut, Monzo, Chime, Zelle direct. Venmo, Cash App, Wise, PayPal after USDCtoFiat Verify.

Does this list Claude.ai seats?: No. It lists an Anthropic API key on Surplus. Consumer Claude subscriptions are not API credits.
What if the key is pay-as-you-go?: Use At cost. Floor is 1.0×. There is no point selling below list.