Seller docs harden the mainnet facilitator split
Official x402 seller documentation drew a bright line: x402.org facilitator for testnets, CDP or PayAI-class facilitators for mainnet. That is an operational standard, not a blog slogan.
2026-01
What happened
Official x402 seller documentation drew a bright line: x402.org facilitator for testnets, CDP or PayAI-class facilitators for mainnet. That is an operational standard, not a blog slogan.
x402 seller docs distinguish test facilitator from CDP mainnet
x402.org facilitator is for testnets; mainnet examples point at Coinbase CDP and PayAI.
x402 seller docs list Solana alongside Base
The protocol is not Base-only even if Foundry’s first rail is.
PayAI publishes a public facilitator home
Facilitator competition is now a market-structure fact, not only a docs footnote.
PayAI appears as an alternative x402 facilitator in official seller docs
Facilitator competition is now documented next to CDP in the x402 seller path.