Base
An Ethereum Layer 2 blockchain network launched by Coinbase that enables fast, low-cost on-chain transactions. Base serves as one of the foundational payment infrastructures for autonomous AI agent transactions.
Core Facts
Timeline (last 90 days)
EAS has official deployments on Base and Optimism mainnet, and has spawned indexers like easscan.org that aggregate on-chain logs into a queryable GraphQL interface.
On Base, three schemas (verifiedAccount, verifiedCountry, verifiedCoinbaseOne) account for 97% of all revocations, and all belong to the same issuer, Coinbase.
Across Base, Optimism and Ethereum mainnet, the EAS protocol shows that 733,203 of 4,986,045 attestations have been revoked, a revocation rate of nearly 15%.
On the Base chain, the EAS indexer shows that 678,895 of 3,651,900 attestations have been revoked.
The x402 payment network supports three chains: Base, Solana and Arc.
The payment field in a real unpaid 402 response contains: scheme: exact, network: eip155:8453 (Base), asset: USDC contract address, amount: 10000 (i.e. 0.01 USDC), payTo: receiving address, maxTimeoutSeconds: 120.
Among x402's cumulative transaction volume, Base ranks first with 85,057,200 transactions, followed by Solana and Polygon.
Reply Desk exposes a machine-readable /templates.json interface via the x402 payment protocol on the Base chain in USDC, charging $0.50 per fetch, with no account or API key required.
Payment parameters for the two endpoints: payTo=0xCa0a6c6Aa7A8F0D5893636CF166Ea2b44fb6500c, asset=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 (USDC on Base), network=eip155:8453, maxAmountRequired=500 atomic ($0.0005)
The gas fee for a single USDC transfer on Base is typically less than $0.01.
12 more timeline events
All Facts (20)
x402 is an open protocol that reuses the 402 status code (Payment Required) from the HTTP protocol, enabling software (especially AI Agents) to call APIs on a per-request pay-as-you-go basis and settle directly with cryptocurrency (typically USDC), without requiring accounts, API keys, or traditional checkout pages.
65%UnverifiedOn Base, three schemas (verifiedAccount, verifiedCountry, verifiedCoinbaseOne) account for 97% of all revocations, and all belong to the same issuer, Coinbase.
50%UnverifiedEAS has official deployments on Base and Optimism mainnet, and has spawned indexers like easscan.org that aggregate on-chain logs into a queryable GraphQL interface.
50%UnverifiedAcross Base, Optimism and Ethereum mainnet, the EAS protocol shows that 733,203 of 4,986,045 attestations have been revoked, a revocation rate of nearly 15%.
50%UnverifiedOn the Base chain, the EAS indexer shows that 678,895 of 3,651,900 attestations have been revoked.
50%UnverifiedThe x402 payment network supports three chains: Base, Solana and Arc.
50%UnverifiedThe payment field in a real unpaid 402 response contains: scheme: exact, network: eip155:8453 (Base), asset: USDC contract address, amount: 10000 (i.e. 0.01 USDC), payTo: receiving address, maxTimeoutSeconds: 120.
50%UnverifiedAmong x402's cumulative transaction volume, Base ranks first with 85,057,200 transactions, followed by Solana and Polygon.
50%UnverifiedReply Desk exposes a machine-readable /templates.json interface via the x402 payment protocol on the Base chain in USDC, charging $0.50 per fetch, with no account or API key required.
50%UnverifiedPayment parameters for the two endpoints: payTo=0xCa0a6c6Aa7A8F0D5893636CF166Ea2b44fb6500c, asset=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 (USDC on Base), network=eip155:8453, maxAmountRequired=500 atomic ($0.0005)
50%UnverifiedThe gas fee for a single USDC transfer on Base is typically less than $0.01.
50%UnverifiedIn the experiment, after the agent requested a data endpoint and the server returned a 402 challenge, the agent autonomously signed a micropayment transaction of 0.05 USDC on the Base L2 network and then obtained the data.
50%UnverifiedBase is an Ethereum Layer 2 network built on the OP Stack and launched by Coinbase in 2023.
50%UnverifiedThe core reason for choosing Base L2 over the Ethereum mainnet is that micropayments are extremely sensitive to gas costs, and mainnet fees could far exceed the value of a 0.05 USDC transaction itself.
50%UnverifiedOn-chain settlement for x402 relies primarily on Ethereum L2 networks such as Base to reduce the gas cost per transaction.
50%UnverifiedFor business and conversational use, choose the Instruct/Chat version; use the Base version only for further training or researching the foundation model
50%UnverifiedModels labeled with Instruct or Chat are instruction-tuned conversational versions, while those without labels are Base foundation models
50%UnverifiedBase is an Ethereum L2 chain launched by Coinbase.
50%UnverifiedThe poster's marketplace interface manifest uses x402-v2, the Base chain (eip155:8453), USDC, a payTo address, with a listing fee of 0.01.
50%UnverifiedOn the Base chain, the average settlement time is approximately 200 milliseconds, with a cost of approximately 0.1 cents per transaction.
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