Solo PayDocumentation

Build wallet-to-wallet ERC-20 payments with sponsored gas, clear APIs, and reliable merchant workflows.

Developer Guide

Integrate the widget, API, SDK, payment callbacks, gasless relay flow, and Webhooks with production-ready guidance.

View Developer Guide

Follow the shortest path from merchant setup to a working payment session, then verify the result end to end.

Start Building

Walk buyers through wallet connection, token approval, sponsored gas, signing, and payment confirmation screens.

View User Guide

Understand direct settlement, callback validation, Webhook verification, testing, and troubleshooting paths.

Review Essentials