114 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.
Full website audit in one call: accessibility (WCAG 2.1 A/AA via axe-core), on-page SEO, HTTP security headers and page speed / page weight, from a single browser load of one URL. Cheaper than four separate calls; if any...
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...
Use when an agent needs base block number. Returns Fetch the current Base mainnet block number from redundant public RPCs and return structured JSON with source and freshness metadata. $0.002.
Ethereum block by number or latest - hash, time, transaction count, gas used, base fee and miner
x402-preflight: confirm your wallet can transact, and see your balance, in one certified call. Pay $0.01 USDC on Base, get a signed on-chain-anchored receipt. The safe first transaction before you ship real volume.
Gas price in the Roundhouse canonical contract: CAIP-2 chain to current base_fee_gwei and as_of. Recurring fee-state primitive for transaction timing and autonomous execution.
Token Supply Lookup: total supply of any ERC-20 on Ethereum mainnet. Total supply of an ERC-20 token contract on Ethereum via totalSupply given token address.
Wallet balance and ERC-20 token balance on Base: live ETH, USDC and up to 5 ERC-20 balances of any address, read from Base mainnet. Pre-flight funding check before a payment or a swap. No API key.
Balance and activity of any Bitcoin mainnet address (legacy, P2SH or bech32): confirmed balance in sats and BTC, unconfirmed pending amount, total received and sent, and transaction counts. Use for payment verification,...
Native and (optional) ERC-20 token balance for a wallet address across major EVM chains (base, ethereum, polygon, arbitrum, optimism)
Token Balance Check: ERC-20 balance of any wallet address on Ethereum mainnet. Ethereum mainnet ERC-20 balanceOf. Takes query parameters token (ERC-20 contract, 0x + 40 hex) and address (holder, 0x + 40 hex). Returns the...
Read the ETH and USDC balance of any address on Base mainnet (chain 8453) straight from the chain, plus transaction count and how many x402 calls the USDC covers. Use it to check your own agent wallet before a paid workf...
Use when an agent has to decide whether a wallet can pay before building a transaction: the native coin balance (ETH, MATIC...) of any address on Base, Ethereum, Polygon, Arbitrum or Optimism, returned both as wei (exact...
Wallet balance on Base: the native ETH balance of any address, read live from the chain. Input: address
Read the USDC balance of any address on Base, Polygon, Arbitrum, Optimism, Ethereum, Monad, Celo, Avalanche, Sei, or Arc. Read-only on-chain call. The minimal single-token read for payment flows - for EVERY token a walle...
Wallet portfolio value. USD value of a wallet on Base, Ethereum, Arbitrum or Optimism: native ETH plus major tokens (USDC and WETH everywhere, the common Base tokens on Base) and up to 20 tokens you add, each priced from...
Call before moving funds on Solana: decision-grade account snapshot — kind; mint decimals/supply/authority; whole-account balance and recent signatures — keyless solana-public-rpc.
Call before moving funds on Solana: decision-grade account snapshot — kind; mint decimals/supply/authority; whole-account balance and recent signatures — keyless solana-public-rpc.
Wallet balance on Base, Ethereum or Solana: give an address, get its ETH or SOL, USDC, USDT and any tokens you list, read live from the chain.
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...
Native and (optional) ERC-20 token balance for a wallet address across major EVM chains (base, ethereum, polygon, arbitrum, optimism)
Everything about a Sui mainnet address or SuiNS name (alice.sui): SUI balance and every other coin with symbol, staked SUI per validator with estimated rewards, USD value, its SuiNS name and latest outgoing transactions.
How many of one ERC-1155 token id an account holds, read straight from the contract. ERC-1155 is the multi-token standard behind most game items, editions and passes, where a single contract holds many ids and a balance...
Base wallet balances. Base only (all 5 chains: wallet_balances; USD values: wallet_portfolio). An address on Base: ETH and major token balances (USDC, WETH, cbBTC, DAI, USDbC, cbETH, AERO, EURC) plus up to 20 token addre...