x402 seller docs distinguish test facilitator from CDP mainnet

x402.org facilitator is for testnets; mainnet examples point at Coinbase CDP and PayAI.

Official seller documentation instructs developers not to reuse https://x402.org/facilitator on mainnet routes. Production examples include the CDP facilitator at api.cdp.coinbase.com/platform/v2/x402 and facilitator.payai.network. Supported networks listed include Base mainnet eip155:8453 and Solana.

Why it matters

Facilitator choice is part of the live commercial path. Foundry’s receive-only rail already requires authenticated CDP on Base mainnet.

Source: x402 docs

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