CDP Facilitator: Who Verifies and Settles an x402 Payment?

An x402 data API costs $0.01 per query. An agent prepares payment information according to the service’s requirements and retries its request. The provider then needs to verify the payload and process settlement under the chosen scheme.

A facilitator helps with that stage; CDP Facilitator is a hosted implementation from Coinbase Developer Platform. Coinbase says it can verify signed payments, screen transactions, submit on-chain settlement and return results to the resource server. Documentation

The service and $0.01 price are hypothetical, not a quote. Official documentation was reviewed October 30, 2026; we did not integrate or make a real payment. Networks, features and fees can change.

One request

sequenceDiagram participant A as Agent and wallet participant S as Data provider participant F as CDP Facilitator participant N as Payment network A->>S: Request data S-->>A: Return payment requirements A->>S: Retry with payment payload S->>F: Request verification F-->>S: Return verification result S->>F: Request settlement under scheme F->>N: Submit on-chain operation N-->>F: Return network result F-->>S: Return settlement result S-->>A: Deliver data under terms

This is one illustrative organization. Actual verification, settlement and delivery order depend on the scheme, server implementation and merchant’s terms; one implementation does not prescribe every x402 request. Coinbase x402 overview

Standard, wallet and service

Component	Role	Does not automatically solve
x402	Communication of payment requirements and information	User budget
Agent wallet or signing tool	Prepare payment payload under supported scheme	Data quality
Resource server	Provide API, set requirements and determine delivery	Need not implement every on-chain operation itself
CDP Facilitator	Verify, screen and submit settlement under supported schemes	User authorization or merchant fulfillment

Providers can evaluate CDP or other implementations based on networks, assets, fees, screening, reliability and terms. The product and standard are not synonyms.

Verification is not settlement

Verification checks whether payment information meets processing conditions, such as signature and parameters. Settlement concerns transfer under the payment scheme. A successful verification does not mean data was delivered.

A service can receive payment and still time out. The buyer needs transaction and order status; retry, payload reuse and refunds depend on merchant and integration. Do not assume a facilitator repairs every delivery failure.

How are fees calculated?

At review, Coinbase documentation said verification was free and the first 1,000 qualifying on-chain facilitator transactions each month were free, with $0.001 per transaction thereafter. The billing unit is an on-chain operation, not necessarily an API request. Schemes can produce different numbers of operations. Pricing and documentation

Question	Why it matters
Which payment scheme?	Requests and on-chain settlements may be combined differently
Who pays the facilitator fee?	Merchant and buyer costs may differ
What else is charged?	Resource, network, funding or FX costs may be separate
Which network and asset?	Support changes; check production and test environments separately

If 2,000 qualifying billable on-chain transactions in one month all fall under the same conditions, the 1,000 above the allowance cost $1 at $0.001 each. This is illustrative arithmetic, not a bill and excludes other costs.

Before integration

Does the server support the intended network, asset and scheme?
How are API credentials protected, rotated and revoked, and are test and production separated?
What states represent failed verification, settlement and delivery?
How are concurrent and timed-out operations queried and deduplicated?
How are screening rejections explained to users and merchants?

See the CDP Facilitator profile and x402 introduction.