x402 has a gas problem. If an agent pays $0.0001 for a data query but network fees are $0.05, the economics break. GraphTally (the micropayment system from The Graph) solved this by introducing cryptographically signed vouchers that settle in batches onchain later. Agents can now make thousands of queries per minute without gas fees blocking every microtransaction. This same innovation has contributed to the x402 specification, making it viable for blockchain use cases. The result: agents can pay for Subgraph queries using x402, transforming The Graph into a data marketplace for the agent economy(The Graph)