Payments & x402
Non-custodial x402 tooling: decode HTTP 402 quotes, verify on-chain USDC settlements, read balances, tx status and gas across Base, Polygon, Arbitrum, Optimism, Ethereum, and Robinhood Chain, and build EIP-3009 transfer authorizations. The agent signs with its own key - Agent402 never touches funds.
x402 market pulse
GET /api/x402-market-pulseLive cross-provider x402 market sentiment. topProviders: the top x402 sellers ecosystem-wide, ranked by REAL on-chain ac…
x402 quote
GET /api/x402-quoteProbe any URL and decode its HTTP 402 payment requirements (price, asset, network, pay-to) into clean JSON - what an age…
USDC balance
GET /api/usdc-balanceRead the USDC balance of any address on Base, Polygon, Arbitrum, Optimism, or Ethereum. Read-only on-chain call. ?addres…
Transaction status
GET /api/tx-statusCheck the confirmation status of a transaction by hash on Base/Polygon/Arbitrum/Optimism/Ethereum/Robinhood Chain: succe…
Gas price
GET /api/gas-estimateCurrent gas price (gwei and wei) on Base, Polygon, Arbitrum, Optimism, Ethereum, or Robinhood Chain - for an agent budge…
Verify x402 settlement
GET /api/x402-verifyConfirm a USDC payment actually settled: given a tx hash (and network), returns whether it succeeded and the USDC transf…
Build USDC transfer authorization
POST /api/transfer-authorizationBuild the EIP-3009 transferWithAuthorization typed data for a gasless USDC transfer on Base/Polygon/Arbitrum/Optimism/Et…
ENS resolve
GET /api/ens-resolveResolve an ENS name (e.g. vitalik.eth) to its Ethereum address - so an agent can turn a human-readable recipient into a …
x402 security audit
GET /api/x402-auditGrade any x402 seller's payment-security posture from the outside - a read-only black-box check mapped to the 'Five Atta…
x402 trending sellers
GET /api/x402-trendingMomentum radar for the x402 seller ecosystem - which sellers are heating up, graded for wash-trade resistance. Reads the…
B20 activation check
GET /api/b20-activation-checkIs B20 live on Base mainnet? Queries the Activation Registry precompile for base.b20_asset and base.b20_stablecoin (or a…
B20 token info
GET /api/b20-token-infoERC-20 metadata plus B20 signals for any Base address: name, symbol, decimals, total supply, best-effort paused/cap, byt…
Verify B20 token
GET /api/b20-verifyBoolean verdict with reasons: is this address a real factory-issued B20 on Base? Checks the 0xB200 address prefix, ERC-2…
B20 feature id
POST /api/b20-feature-idPure-CPU helper: turn a B20 feature string (e.g. base.b20_asset) into its bytes32 feature id and ready-to-send isActivat…
New B20 tokens
GET /api/b20-new-tokensRecently deployed B20 tokens on Base: scans the factory's B20Created logs over a block window, locates each new token by…
B20 payment memos
GET /api/b20-memosPayment memos attached to B20 transfers: pairs each Memo(address,bytes32) log with its Transfer at the previous log inde…
My usage (wallet-keyed purchase history)
POST /api/my-usageYour own purchase history, keyed to the wallet that pays for the call - no wallet parameter, no signup: the x402 payment…