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Read an ENS name's address plus its text records (avatar, url, email, description, com.twitter, com.github and more) in one call, live from the resolver on Ethereum mainnet. Pass `keys` to fetch spec…
https://chain.openverbs.com/v1/ens-recordsGet the verified contract ABI and verification metadata for a deployed contract by address, sourced from Sourcify. Returns the contract ABI (to decode or call it), contract name, compiler/language, m…
https://chain.openverbs.com/v1/abiCall a read-only (view/pure) function on any deployed contract via eth_call and get the decoded result. Give the contract address and a human-readable signature (e.g. 'balanceOf(address) view returns…
https://chain.openverbs.com/v1/read-contractBalance and activity for a Bitcoin address (base58 1…/3… or bech32 bc1…): confirmed balance (sats and BTC), total received and sent, confirmed transaction count, and unconfirmed/pending value and tx …
https://chain.openverbs.com/v1/btc-addressLook up a Bitcoin transaction by txid: confirmation status, block height and time, fee (sats), effective fee rate (sat/vB), size, weight and virtual size, input and output counts, and total output va…
https://chain.openverbs.com/v1/btc-txDeterministic risk screen of an ERC-20 token from on-chain bytecode and metadata, no third-party risk API. Flags privileged or abuse capabilities: blacklist/freeze, owner mint, pausable transfers, up…
https://chain.openverbs.com/v1/token-riskResolve one NFT (contract + tokenId) into normalized metadata: name, description, image, attributes and token standard (ERC-721 or ERC-1155). Reads the on-chain tokenURI/uri, then fetches and normali…
https://chain.openverbs.com/v1/nft-metadataDecode a transaction into plain language: native ETH transfer, contract call (with decoded method name for common ERC-20/DEX functions like transfer, approve, swap, mint, multicall) or contract creat…
https://chain.openverbs.com/v1/explainLive snapshot of the Bitcoin mempool: number of unconfirmed transactions, total pending virtual size (bytes and MB), the current backlog in blocks, total fees pending (sats and BTC), the fee-rate his…
https://chain.openverbs.com/v1/btc-mempoolLive recommended Bitcoin transaction fee rates (in sat/vB) for next-block, ~30-minute, ~1-hour, economy and minimum confirmation targets, straight from the mempool. Also estimates the total fee (in s…
https://chain.openverbs.com/v1/btc-feesSimulate a transaction before signing: runs `eth_estimateGas` for `{ to, from?, data?, value? }` and returns the estimated gas units and estimated fee (current gas price x gas, in wei + ETH). If the …
https://chain.openverbs.com/v1/gas-estimateTurn a 4-byte function selector or full calldata into its human-readable function signature, and (when calldata is present) the decoded argument values. Supply an `abi` for a fully deterministic offl…
https://chain.openverbs.com/v1/decodeLive transaction receipt by hash via `eth_getTransactionReceipt`: success/failed status, block number, from/to, created contract address, gas used, cumulative gas, effective gas price (wei + gwei), t…
https://chain.openverbs.com/v1/receiptLive status and details of a transaction by hash: success/failed/pending, from/to, value (wei + ether), nonce, block number, gas used, effective gas price and any created contract address. Returns `f…
https://chain.openverbs.com/v1/txReverse-resolve an Ethereum address to its primary ENS name (the reverse record set by the owner), read live on Ethereum mainnet. Returns `found:false` when the address has no primary name set. Live …
https://chain.openverbs.com/v1/ens-reverseNative ETH / wallet balance for an address on any EVM chain: native balance (wei + ether), transaction count (nonce), and whether it's a contract or an externally-owned account (with deployed code si…
https://chain.openverbs.com/v1/addressLive ERC-20 metadata read directly from the contract: name, symbol, decimals and total supply (raw + decimal-formatted). Handles both string and legacy bytes32 name/symbol encodings. Returns `isToken…
https://chain.openverbs.com/v1/tokenLive ERC-20 token balance held by a wallet: calls `balanceOf(address)` on the token contract and returns the raw balance plus a decimal-formatted amount (using the token's own decimals) with its symb…
https://chain.openverbs.com/v1/token-balanceLive gas conditions for an EVM chain: current gas price, the latest block's base fee (EIP-1559) and the suggested max priority fee — all in both wei and gwei. Ground truth an agent can't compute. Rea…
https://chain.openverbs.com/v1/gasLive block summary by number, hex, or tag (latest/earliest/pending/safe/finalized; default latest): number, hash, parent, timestamp (unix + ISO), transaction count, gas used/limit, base fee and miner…
https://chain.openverbs.com/v1/blockDetect whether a contract is an upgradeable proxy and resolve its implementation: reads the standard EIP-1967 implementation/admin/beacon slots, EIP-1822 (UUPS), the OpenZeppelin legacy slot, and EIP…
https://chain.openverbs.com/v1/proxyResolve an ENS name (like alice.eth) to its Ethereum address, read live from the ENS resolver on Ethereum mainnet. Offchain names such as *.base.eth resolve too. Returns `found:false` (a real answer,…
https://chain.openverbs.com/v1/ens-resolveLive ERC-20 spending allowance an owner has granted a spender: calls `allowance(owner, spender)` on the token and returns the raw amount, a decimal-formatted amount (using the token's decimals) with …
https://chain.openverbs.com/v1/token-allowanceQuery a contract's event logs over a bounded block range via `eth_getLogs`: filter by `address` (required) and optional `topics`, get back raw logs (topics, data, block, tx hash, log index) with ERC-…
https://chain.openverbs.com/v1/logs