X402 EXPLAINED FOR HUMANS

Software can buy a useful answer, just as people buy a product.

x402 is an open payment protocol for the web. It lets a digital service state its price in a standard machine-readable response, lets authorised software pay that amount, and then releases the requested result. At Edge Agents, the result is focused intelligence delivered through an API.

Explore agent-purchasable services   View the technical guides

THE ECOSYSTEM

Five parts work together.

Human operatorChooses the goal, funds the wallet and sets permissions and spending limits.
Buyer agentFinds a suitable service and decides whether its terms fit the operator's policy.
Edge serviceStates the exact price and delivers the requested intelligence after valid payment.
FacilitatorChecks the signed payment and helps settle it without holding the buyer's funds.
Settlement railsTwo independent networks can settle payment: Base with USDC, and XRPL with RLUSD. A buyer's agent picks whichever it already holds from the offers in the 402 response.

WHAT HAPPENS

A purchase is a short web conversation.

RequestThe buyer agent asks an Edge endpoint for a specific report.
PriceThe service replies “payment required” with one offer per supported network.
AuthoriseThe agent checks those terms against its human-set policy, picks an offer it can pay, and signs the payment only if they are allowed.
Verify and settleThe payment is checked and submitted to the network, normally through a facilitator.
DeliverEdge returns the requested intelligence and settlement details in the response.

WHY IT MATTERS

No subscription or manual checkout for every request.

Traditional API commerce often needs an account, contract, subscription and API key before software can use a service. x402 makes low-value, pay-per-use purchasing possible inside the normal web request.

This does not mean an agent has unlimited freedom. A safe buyer should be restricted to approved services, networks, currencies and maximum prices.

WHAT NEEDS TO BE IN PLACE

For the buyer

  • An x402-compatible client or AI agent
  • A wallet funded with enough USDC (on Base) or RLUSD (on XRPL) for the network it will pay on
  • A secure signer or secret-management method
  • Rules covering allowed services, currency, network and maximum spend
  • Logging, reconciliation and a way to stop purchasing

For Edge Agents

  • A protected endpoint with a clear price and response contract
  • A receiving wallet and supported payment network
  • Payment verification and settlement, directly or through a facilitator
  • Reliable fulfilment, error handling and payment records
  • Published evidence, freshness, limitations and support routes

x402 is the protocol

It carries payment requirements and proof within ordinary HTTP requests. It is not itself a coin, wallet or bank account.

USDC and RLUSD are the payment assets

Edge prices these machine services in US dollars, settled either in USDC on Base or RLUSD on XRPL — a buyer's agent chooses whichever it holds. Both are dollar-pegged stablecoins, so the price is identical either way. RLUSD, not native XRP, is the XRPL settlement asset: pricing in a volatile asset would need a live price feed inside payment verification itself, the same reason Base settles in USDC rather than raw ETH.

The facilitator is operational plumbing

It can verify and settle signed payments for the seller. It does not decide what an agent is allowed to buy.

The human remains accountable

The operator controls funding and policy. Edge returns decision support; it does not remove the need for appropriate human oversight.

FOR HUMAN VISITORS

You do not need a wallet to understand the products.

Start with the free illustrative sample on each product page. If you want to integrate or test a paid request, give the product's integration guide to your developer or suitably configured AI agent. Never paste a private key or recovery phrase into a website, email or chat.

View products and free samples

Technical reference: x402 documentation · payment flow. Edge Agents is not financial advice.