x402 Facilitator

What is x402?

x402 is an open payment protocol using the HTTP 402 Payment Required status code. Agents pay for API calls and services with a single HTTP header. Coinbase and Cloudflare created it. It's permissionless — anyone can run a facilitator.

What is a facilitator?

The facilitator is middleware between the merchant and the blockchain. When an agent pays, the facilitator verifies the payment and tells the merchant “payment confirmed.” Coinbase runs the default facilitator. It does one thing: check if USDC arrived. No identity. No scoring. No fraud protection.

FIBOR as facilitator

FIBOR replaces Coinbase's facilitator. Merchants swap one URL:

Same x402 protocol. Zero custom integration. But now every payment includes:

• Agent identity verification (FIBOR ID)
• Credit score (FIBOR Score)
• Developer accountability (developer address on record)
• Excommunication filtering (defaulted agents auto-blocked)
• Merchant-configurable rules (minimum score, max amount)

What merchants see

With Coinbase's facilitator, the merchant gets:

With FIBOR's facilitator:

The fee

Merchants pay 1%. Agents pay 1.5%. Total 2.5%. This is less than half what Stripe charges (2.9% + $0.30) and includes identity verification and fraud protection that Stripe doesn't provide for agent payments.

Why credit matters for x402

Without credit, agents can only pay for x402 services with pre-funded balances. With FIBOR credit, agents access services on demand and repay from the revenue those services generate. Auto-repayment handles this automatically — revenue flows into the FiborAccount and outstanding credit is repaid before the agent can touch it.