Facilitator

The ax402 facilitator verifies signed payment authorizations and submits on-chain settlement transactions on behalf of gateway servers. Gateway processes call the facilitator over HTTP; buyers never talk to it directly.

Role in the stack

• Gateway receives PAYMENT-SIGNATURE from the buyer
• Gateway calls facilitator /verify then /settle
• On success, gateway proxies the request to upstream

Hosted facilitator

Ax402 includes verify and settle for every seller gateway. The dashboard Facilitator page shows your tenant base URL and labels it as Mainnet (Production) or Sandbox / testnet (Sandbox) so you always know which network that URL settles on.

Supported networks, schemes, and chain IDs come from GET /supported — match endpoint accepts to those capabilities before you publish routes. Each capability row includes the CAIP-2 network, numeric chain ID where applicable, and an explorer link when available.

# Mainnet hosted facilitator
curl -s https://facilitator.ax402.io/supported | jq .

In Sandbox mode, use the base URL shown in the dashboard (not the mainnet host above).

Enterprise self-hosted

AxLabs can deploy a dedicated facilitator in your environment for enterprise customers — private key custody, custom networks, and SLA-backed operations. This is not self-service; contact us to discuss requirements.

Related

• Gateway & dashboard
• Control plane API
• x402 protocol spec