Ethereum

EVM Address Check x402 REST usage

EVM address checksum and validation — check an Ethereum/Base address format before sending funds.

conclavex402p04.pythonanywhere.com Crypto & Payments 4 calls / 30d checked 2026-10-31

0.005 USDC per call per call

Blockchain Governance Guide x402 REST usage

Blockchain IQ Dispatch, parameter-free: who's actually in charge? A field guide to the six governance models actually in use across crypto, what each optimizes for, where each has broken, and which chains use which. Gove...

www.blockchainiq.co Crypto & Payments 1 calls / 30d checked 2026-10-31

0.02 USDC per call per call

Ethereum ERC-20 Allowance x402 REST usage

Allowance Check: ERC-20 approval a wallet granted a spender on Ethereum mainnet. Ethereum mainnet ERC-20 allowance. Takes query parameters token (ERC-20 contract, 0x + 40 hex), owner (0x + 40 hex) and spender (0x + 40 he...

api.arysphere.com Crypto & Payments 10 calls / 30d checked 2026-10-25

0.002 USDC per call per call

Ethereum Onchain Data x402 REST usage

Who is this Ethereum address? Wallet age (first transfer), first funder, contract or EOA, ETH balance and nonce, the latest transfers in and out (native, ERC-20, NFTs), top counterparties by count, and recent large trans...

ca-tax-api-mainnet.lxtap.workers.dev Crypto & Payments 2 calls / 30d checked 2026-10-31

0.01 USDC per call per call

x402 Wallet Balance Lookup x402 REST usage

Native and (optional) ERC-20 token balance for a wallet address across major EVM chains (base, ethereum, polygon, arbitrum, optimism)

x402tap.com Crypto & Payments 2 calls / 30d checked 2026-10-31

0.01 USDC per call per call

x402 Gas Price Oracle x402 REST usage

Current gas price and EIP-1559 fee estimate for a chain (base, ethereum, polygon, arbitrum, optimism)

x402tap.com Crypto & Payments 2 calls / 30d checked 2026-10-31

0.01 USDC per call per call

Block number, Ethereum x402 REST usage

Block number, Ethereum. Latest block number and block details on Ethereum, or any block by decimal number: hash, timestamp, transaction count, gas used and limit, base fee in gwei and producer. Use for timestamps and con...

agent-data-tools.revmesh2074.workers.dev Crypto & Payments 6 calls / 30d checked 2026-10-31

0.003 USDC per call per call

Ethereum gas price x402 REST usage

Ethereum gas price. Current gas price on Ethereum (eth_gasPrice): gas price, base fee and suggested priority fee in gwei, plus what a plain ETH transfer (21,000 gas) costs right now. Takes no input. Use before sending a...

agent-data-tools.revmesh2074.workers.dev Crypto & Payments 6 calls / 30d checked 2026-10-31

0.003 USDC per call per call

EVM Gas Fees x402 REST usage

Current EIP-1559 gas fees for Ethereum, Base, Arbitrum, Optimism or Polygon: next base fee, slow/standard/fast priority and max fee in gwei, block utilisation and the cost of a plain transfer (L2 L1-data fees excluded)....

bess-x402.onrender.com Crypto & Payments 6 calls / 30d checked 2026-10-31

0.003 USDC per call per call

Ens resolve x402 REST usage

Resolve an ENS name to its current Ethereum address or perform a reverse address lookup with forward-confirmation against the live ENS registry.

ai-data-marketplace-1042299154756.us-central1.run.app Crypto & Payments 16 calls / 30d checked 2026-10-31

0.001 USDC per call per call

Eth recover signer x402 REST usage

Recover which address signed a message — Genesis402 / UnyKorn Operator Network

twin.unykorn.org Crypto & Payments 5 calls / 30d checked 2026-10-27

0.003 USDC per call per call

EVM Gas Price Oracle x402 REST usage

Current gas prices for Base or Ethereum mainnet: legacy gas price, EIP-1559 base fee and suggested priority fee (all gwei), plus the latest block number. Query: chain (base | ethereum, default base). Real-time from publi...

x402.shizu.me Crypto & Payments 5 calls / 30d checked 2026-10-31

0.003 USDC per call per call

onchain-wallet-balances x402 REST usage

Native-coin balance + ERC-20 token balances (raw + human) for any address on Base, Ethereum, Arbitrum, Optimism, Polygon or BNB (default Base). On Base pass token symbols or 0x addresses (or a default common set); on oth...

api.agentstools.dev Data & Finance 3 calls / 30d checked 2026-10-31

0.005 USDC per call per call

Token transfers, Ethereum x402 REST usage

Token transfers, Ethereum. List a wallet's recent transfers of one ERC-20 token (default USDC) on Ethereum, in and out, over the last N blocks (1-2,000, default 1,000): direction, counterparty, amount and transaction, ne...

agent-data-tools.revmesh2074.workers.dev Crypto & Payments 5 calls / 30d checked 2026-10-31

0.003 USDC per call per call

Ethereum native balance x402 REST usage

Ethereum native balance. Native ETH balance (eth_getBalance) of any 0x wallet address on Ethereum at the latest block, in wei and in ETH. Use to check whether a wallet can pay gas or a transfer; for ERC-20 tokens use eth...

agent-data-tools.revmesh2074.workers.dev Crypto & Payments 5 calls / 30d checked 2026-10-31

0.003 USDC per call per call

AllTheBot ENS resolver x402 REST usage

ENS resolve on Ethereum: turn a .eth name into an address, or an address into its primary ENS name (reverse names returned only when verified). Forward and reverse lookup.

api.zkrobotics.fr Crypto & Payments 5 calls / 30d checked 2026-10-31

0.003 USDC per call per call

Ethereum Address Inspector x402 REST usage

Inspect any Ethereum address: EOA vs contract vs EIP-7702 delegated, ETH balance, nonce, proxy implementation (EIP-1967/1167/zos), and ERC-20 name/symbol/decimals/supply.

automaton-tx-explainer.vercel.app Crypto & Payments 3 calls / 30d checked 2026-10-31

0.005 USDC per call per call

d21 crypto_news x402 REST usage

Crypto News ($0.001 -- matches the category-leading incumbent's price exactly): fixed, no-required-params crypto headline feed -- a drop-in-shaped alternative to the category leader (GET, headlines[] with title/url/sourc...

draconic21-x402-api.onrender.com Search & Research 15 calls / 30d checked 2026-10-31

0.001 USDC per call per call

Ethereum ERC-721 Owner x402 REST usage

NFT Owner Lookup: Ethereum mainnet ERC-721 owner of any token ID. Returns the owner address of an ERC-721 token on Ethereum mainnet. Takes token (contract address, 0x plus 40 hex) and id (decimal token id).

api.arysphere.com Crypto & Payments 5 calls / 30d checked 2026-10-25

0.003 USDC per call per call

ETH Mainnet Logs And Tx x402 REST usage

On-Chain Bundle: multiple Ethereum mainnet reads in one paid call. Parts: eth_mainnet_eth_getlogs, eth_mainnet_eth_gettransactionbyhash. Returns: each named part service's own result, in one paid call, keyed by the part'...

api.arysphere.com Crypto & Payments 3 calls / 30d checked 2026-10-25

0.005 USDC per call per call

Ethereum Token Approval Check x402 REST usage

Check a Ethereum wallet's ERC-20 approvals: allowances for 8 major tokens (USDC, USDT, WETH, DAI...) to common spenders (Permit2, Uniswap Universal Router v4, Uniswap Universal Router, Uniswap SwapRouter02...); flags unl...

automaton-tx-explainer.vercel.app Crypto & Payments 3 calls / 30d checked 2026-10-31

0.005 USDC per call per call

onchain-wallet-balances x402 REST usage

Native-coin balance + ERC-20 token balances (raw + human) for any address on Base, Ethereum, Arbitrum, Optimism, Polygon or BNB (default Base). On Base pass token symbols or 0x addresses (or a default common set); on oth...

webtools402.176-109-107-191.sslip.io Data & Finance 3 calls / 30d checked 2026-10-31

0.005 USDC per call per call

Ethereum x402 REST usage

Receipt Check: status, gas used, logs by tx hash on Ethereum mainnet. Ethereum mainnet transaction receipt via eth_getTransactionReceipt. Takes query parameter hash (transaction hash, 0x + 64 hex). Returns the node's rec...

api.arysphere.com Crypto & Payments 7 calls / 30d checked 2026-10-25

0.002 USDC per call per call

Gas price now on every EVM chain x402 REST usage

Gas price now on every EVM chain ($0.001): base fee, priority fee percentiles and the USD cost of a transfer and a DEX swap on Ethereum, Base, Arbitrum, Optimism, Polygon and other chains, cheapest first. Use to budget o...

api.marketintelligenceapi.com Crypto & Payments 13 calls / 30d checked 2026-10-31

0.001 USDC per call per call