# Levanto Sage prepaid keys

Buy a Sage API key with an MPP payment. No account.

- Buy: POST https://mpp.levanto.ai/v1/keys {"amount_usd": 10} -> 402, pay, retry -> your key
- Top up: POST https://mpp.levanto.ai/v1/keys/{key_id}/topup {"amount_usd": 20}
- Balance: GET https://mpp.levanto.ai/v1/keys/{key_id} with Authorization: Bearer <key>
- Use: https://sage.levanto.ai with Authorization: Bearer <key>

Pay with USDC on Tempo ($5.00-$100.00) or a card (up to $50.00).
A key holds up to $500.00 in total and expires 90 days after the last top-up.
The key is shown once. Balances are not refundable.
OpenAPI: https://mpp.levanto.ai/openapi.json