Configuration & ConfigIds
Every widget takes a configId that selects the deployment (env × chain × index). For the format and full list, see Concepts → Networks & ConfigIds.
Picking a ConfigId
<!-- Polygon mainnet -->
data-config-id="production-137-0"
<!-- Base mainnet -->
data-config-id="production-8453-0"
<!-- Base Sepolia testnet -->
data-config-id="staging-84532-0"Match it to your seller / offer's chain. Cross-chain widgets don't exist — one widget instance, one chain.
Other commonly-set attributes
| Attribute | Effect |
|---|---|
data-account | Restrict to one wallet address |
data-look-and-feel | "modal" (default) or "regular" |
data-modal-margin | Margin around the modal in CSS units |
data-postback-url | Server URL to receive lifecycle events |
data-theme-overrides | JSON string of CSS variable overrides |
Full set: Reference → Widget URL params.