Builder notes on x402, Base MCP, receipt-backed paid work, discovery surfaces, and the buyer metadata agents need before they spend.
Coinbase's tokenized stocks landed on Base, the same chain carrying x402 agent payments. The paid data layer in between is the builder gap.
AWS took agent payments to GA while Bazaar grew to 15,100 resources. The scarce layer is deciding what deserves a payment.
Base MCP gives agents a wallet path. AgentToll packages x402 work products agents can inspect, cap, approve, and receipt.
Linux Foundation governance, Visa and Artemis usage data, and what the x402 Foundation launch means for builders shipping paid agent tools.
A builder's guide to x402 payments, MCP discovery, and the five-layer pattern behind agent-buyable work.