{"protocol":"zfinia-machine-economy-graph-v0","generatedAt":"2026-09-09T10:30:34.232Z","entity":{"id":"base","type":"NETWORK","typeTags":[],"name":"Base","description":"Coinbase L2 and the first Foundry production settlement network for USDC 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lease","at":"2026-01-15T00:00:00.000Z","headline":"x402 seller docs list Solana alongside Base","summary":"Official seller documentation lists Base mainnet, Base Sepolia, Solana mainnet and Solana devnet as CAIP-2 identifiers. Foundry’s production policy remains Base USDC receive-only. Editorial coverage must not collapse the protocol to one chain.","entityIds":["x402","solana","base"],"sourceUrl":"https://docs.x402.org/getting-started/quickstart-for-sellers","evidence":{"sourceUrl":"https://docs.x402.org/getting-started/quickstart-for-sellers","sourceType":"authoritative_documentation","observedAt":null,"sourcePublishedAt":"2026-01-15","retrievedAt":null,"excerptHash":null,"confidence":null,"classification":"OBSERVED","provenance":null,"method":"sourced_archive_event","independentlyCorroborated":false},"firstParty":false},{"id":"ethereum-pectra-2025-05-07","type":"protocol_release","at":"2025-05-07T00:00:00.000Z","headline":"Ethereum’s Pectra upgrade lands on mainnet","summary":"On 7 May 2025 the Ethereum Foundation recorded the Pectra mainnet upgrade. Pectra is not an agent-payments protocol; it is base-layer plumbing that affects L2 costs and account features that wallets use. x402’s commercial claim still depends on cheap L2 fees remaining cheap.","entityIds":["ethereum","base"],"sourceUrl":"https://blog.ethereum.org/2025/05/07/pectra-mainnet","evidence":{"sourceUrl":"https://blog.ethereum.org/2025/05/07/pectra-mainnet","sourceType":"protocol_release","observedAt":null,"sourcePublishedAt":"2025-05-07","retrievedAt":null,"excerptHash":null,"confidence":null,"classification":"VERIFIED","provenance":null,"method":"sourced_archive_event","independentlyCorroborated":false},"firstParty":false},{"id":"base-l2-fees-enable-micropayments","type":"market_snapshot","at":"2025-05-06T00:00:00.000Z","headline":"Cheap L2 fees are the economic precondition x402 keeps citing","summary":"The x402 announcement contrasts earlier Bitcoin-channel micropayment experiments with modern L2 fees on Base. The commercial claim is not that fees are zero; it is that they are low enough for API-priced calls. zFinia records this as a market precondition, not as a fee oracle.","entityIds":["base","coinbase","x402"],"sourceUrl":"https://www.coinbase.com/developer-platform/discover/launches/x402","evidence":{"sourceUrl":"https://www.coinbase.com/developer-platform/discover/launches/x402","sourceType":"official_announcement","observedAt":null,"sourcePublishedAt":"2025-05-06","retrievedAt":null,"excerptHash":null,"confidence":null,"classification":"VERIFIED","provenance":null,"method":"sourced_archive_event","independentlyCorroborated":false},"firstParty":false},{"id":"coinbase-x402-2025-05-06","type":"official_announcement","at":"2025-05-06T00:00:00.000Z","headline":"Coinbase introduces x402: stablecoin payments over HTTP 402","summary":"On 6 May 2025 Coinbase Developer Platform published x402. Servers return HTTP 402 with payment requirements; clients retry with a signed payment, typically USDC on cheap L2s such as Base. The announcement explicitly targets APIs, apps and AI agents. Documentation and a reference implementation were pointed at x402.org and GitHub.","entityIds":["coinbase","x402","base","cdp"],"sourceUrl":"https://www.coinbase.com/developer-platform/discover/launches/x402","evidence":{"sourceUrl":"https://www.coinbase.com/developer-platform/discover/launches/x402","sourceType":"official_announcement","observedAt":null,"sourcePublishedAt":"2025-05-06","retrievedAt":null,"excerptHash":null,"confidence":null,"classification":"VERIFIED","provenance":null,"method":"sourced_archive_event","independentlyCorroborated":false},"firstParty":true}],"observations":[],"machineUrl":"/v1/graph/entities/base","humanUrl":"/entities/base"}