Fewsats

Fewsats is payment infrastructure designed around a simple premise: as AI agents start transacting autonomously, they need a way to pay that does not hand over your financial credentials. Instead of giving an agent direct access to a card or bank account, Fewsats acts as an intermediary. The agent requests a payment, Fewsats coordinates it, and control over budgets, limits and approvals stays with the human user.

For developers building agents, the integration follows the HTTP 402 Payment Required convention. An agent calls an external service, receives a 402 response containing available offers, then calls the payOffer method through the Fewsats SDK. Responses can return a needs_review state, which routes the transaction into an approval workflow rather than completing it automatically. A TypeScript example shows the pattern in just a few lines.

On the merchant side, the product is positioned as a new revenue channel. Services can create offers server-side to gate paywalled resources, enabling micropayments and agent-to-agent transactions with minimal overhead. One integration covers bank transfers such as ACH and wire, credit cards, and cryptocurrency including stablecoins for borderless settlement. Fewsats has announced it has joined Sapiom to continue building payment experiences for AI, though the platform described here remains live.