Onchain Query API

• 83trust
  EnsOnchain Query API

  ENS name resolution in both directions on Ethereum mainnet. Pass name to resolve an ENS name to its address (forward), or pass address to get that address's primary ENS name (reverse, forward-verified so spoofed reverse records are rejected). Read straight from the ENS registry. Use it to turn vitalik.eth into an address, or to label a raw address with a human-readable name.

  x402 APIOnchain & crypto
  $0.003per call on Base
  100% uptime, 255 ms, 7 paying agentsPassing, checked 3 h ago
• 83trust
  BlockOnchain Query API

  Latest block on any major EVM chain: block number, timestamp, age in seconds, base fee and gas used/limit. The cheapest possible liveness and chain-tip check for an agent: confirm a chain is progressing, timestamp an observation, or pick a block for a query.

  x402 APIOnchain & crypto
  $0.001per call on Base
  100% uptime, 275 ms, 6 paying agentsPassing, checked 3 h ago
• 81trust
  GasOnchain Query API

  Live gas market on any major EVM chain: current gas price, base fee and priority-fee percentiles (p25/p50/p75) in gwei, plus the estimated cost in native token and USD for a plain transfer (21k gas) and a typical DEX swap (200k gas). Lets an agent decide whether a transaction is worth sending right now or should wait for cheaper gas, and budget the fee before signing.

  x402 APIOnchain & crypto
  $0.002per call on Base
  100% uptime, 265 ms, 3 paying agentsPassing, checked 2 h ago
• 81trust
  TokenOnchain Query API

  ERC-20 token profile on any major EVM chain: on-chain metadata (name, symbol, decimals, total supply) read straight from the contract, joined with live DEX market data (USD price, liquidity, 24h volume, 24h change, and the top trading pair with its DEX). Use it to price a token, check liquidity depth before a swap, or resolve an unknown contract address into a real token.

  x402 APIOnchain & crypto
  $0.004per call on Base
  100% uptime, 251 ms, 3 paying agentsPassing, checked 1 h ago
• 81trust
  PriceOnchain Query API

  Spot USD price for any crypto asset. Accepts a ticker symbol (eth, btc, sol), a CoinGecko id (ethereum), or an EVM token contract address. Returns the USD price plus 24h change, with market cap for listed assets, or liquidity, 24h volume and the top DEX pair for contract addresses. Cached 60 seconds so repeated calls in one agent workflow stay consistent with each other.

  x402 APIOnchain & crypto
  $0.002per call on Base
  100% uptime, 270 ms, 3 paying agentsPassing, checked 2 h ago
• 81trust
  DerivativesOnchain Query API

  Crypto perpetual-futures snapshot for a symbol in ONE call (Binance USD-M, keyless): current funding rate and the next funding time, mark and index price, open interest (contracts and USD), 24h price change/high/low/volume, and the top-trader long/short account ratio. For funding arbitrage, leverage/positioning reads, and a derivatives view an onchain-only feed cannot give. Cached 30s.

  x402 APIOnchain & crypto
  $0.005per call on Base
  100% uptime, 263 ms, 3 paying agentsPassing, checked 3 h ago
• 80trust
  TxOnchain Query API

  Transaction lookup and decode on any major EVM chain. Turns a raw tx hash into agent-readable facts: success or failure status, block number, sender and recipient, native value transferred, gas used, fee in native token and USD, and every ERC-20 transfer decoded with token symbol, decimals and human-readable amount. Returns found=false for an unknown hash instead of erroring.

  x402 APIOnchain & crypto
  $0.003per call on Base
  100% uptime, 278 ms, 2 paying agentsPassing, checked 18 min ago
• 80trust
  WalletOnchain Query API

  Wallet snapshot on any major EVM chain: native token balance with USD value, USDC balance, transaction count (nonce), and whether the address is a smart contract or a regular EOA. One call, no RPC keys, node infrastructure or block-explorer scraping needed. Use it to check a counterparty wallet, confirm an address is funded before sending a transaction, or profile an unknown address.

  x402 APIOnchain & crypto
  $0.003per call on Base
  100% uptime, 205 ms, 2 paying agentsPassing, checked 4 h ago
• 80trust
  PricesOnchain Query API

  Spot USD prices for up to 20 crypto assets in ONE call: pass tickers (eth, btc, sol), CoinGecko ids, or 0x token addresses (priced from live DEX pairs). Each entry returns price_usd, 24h change and market cap where known; unknown symbols are reported, not silently dropped. Use it to value a portfolio, size a trade, or refresh a price table without 20 round trips.

  x402 APIOnchain & crypto
  $0.002per call on Base
  100% uptime, 143 ms, 2 paying agentsPassing, checked 4 h ago
• 80trust
  Erc20 BalanceOnchain Query API

  ERC-20 token balance of any wallet on Base, Ethereum, Arbitrum, Optimism or Polygon: USDC, USDT, DAI, WETH or any token contract. Returns the human balance, the raw integer amount, and the token's symbol and decimals read from the contract. Omit `token` to get the chain's native USDC. Use it to confirm a payment landed or to check a stablecoin float.

  x402 APIOnchain & crypto
  $0.001per call on Base
  100% uptime, 128 ms, 2 paying agentsPassing, checked 4 h ago
• 80trust
  BalanceOnchain Query API

  Native coin balance (ETH or POL) of any address on Base, Ethereum, Arbitrum, Optimism or Polygon, with USD value. One RPC read, no key, no node. Use it to check that a wallet is funded before sending, or to watch a counterparty balance.

  x402 APIOnchain & crypto
  $0.001per call on Base
  100% uptime, 152 ms, 2 paying agentsPassing, checked 4 h ago
• 80trust
  Gas CompareOnchain Query API

  Live gas across Base, Ethereum, Arbitrum, Optimism and Polygon in ONE call, sorted cheapest first: gas price, base fee, median priority fee and the estimated USD cost of a 21k-gas transfer and a 200k-gas swap on each chain. Lets an agent pick the cheapest chain to execute on, or size a fee, without five separate RPC calls. 10-second cache.

  x402 APIOnchain & crypto
  $0.002per call on Base
  100% uptime, 145 ms, 2 paying agentsPassing, checked 3 h ago

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