101 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.
Transaction count (nonce) for a Base address, latest and pending. Use when an agent needs the next nonce for a Base address before signing a transaction.
ERC-20 allowance(owner, spender) on Base, raw + formatted, flags unlimited approvals.
Gas price on Base and Ethereum in ONE call (legacy gas price + EIP-1559 priority fee, wei and gwei) — Genesis402 / UnyKorn Operator Network
Ethereum mainnet JSON-RPC from an independently operated full node. One call per payment, no account or API key. Serves eth_, net_ and web3_ methods. Blocks, transactions, receipts and logs from the Merge (block 15537394...
Current gas conditions on Base, read live from a public node: gas price, base fee of the latest block, suggested priority fee, latest block number and timestamp. No parameters. No third-party API, no cache.
Every transaction receipt in one block, in one call — Genesis402 / UnyKorn Operator Network
Event logs filtered by contract, topic and block range — Genesis402 / UnyKorn Operator Network
Merkle-Patricia state proof for an account and optional storage slot — Genesis402 / UnyKorn Operator Network
Current gas price on any of ten EVM chains — Genesis402 / UnyKorn Operator Network
Native coin balance for one address, on any of ten EVM chains — Genesis402 / UnyKorn Operator Network
Read one raw storage slot from any contract — Genesis402 / UnyKorn Operator Network
Transaction count (nonce) for one address — Genesis402 / UnyKorn Operator Network
Which client software is behind an RPC endpoint — Genesis402 / UnyKorn Operator Network
How many transactions are in a block — Genesis402 / UnyKorn Operator Network
Block header by number, with age and gas utilisation worked out — Genesis402 / UnyKorn Operator Network
The Nth transaction in a block — Genesis402 / UnyKorn Operator Network
Breached password check: is this password in known data breaches, and how often? Send only the SHA-1 hash (never the password); just the first 5 characters reach Have I Been Pwned (k-anonymity). Up to 50 hashes per call.
Resolve ENS (.eth) on Ethereum and Basenames (.base.eth) on Base, forward or reverse. Returns address, name, source, forward_verified, optional avatar.
Detect upgradeable proxy patterns (EIP-1967, UUPS, Transparent, Beacon) for any contract and return the current implementation address. Essential before trusting or calling an unknown contract.
Transaction details and receipt by hash: status, block, from, to, value, gas used, effective gas price and decoded ERC-20 transfers.
Bitcoin read-only RPC and supported simulations. Submit method and params as JSON. Method schemas, limits and prices: https://api.block402.xyz/docs/api.md. Obtain a bound quote with a private Idempotency-Key before signi...
Recent base-fee and priority-fee history — Genesis402 / UnyKorn Operator Network
The EIP-155 chain ID for any supported network via eth_chainId — the read multi-chain agents make to confirm which chain an RPC is on before signing. Across Base, Ethereum, Optimism, Arbitrum, Polygon, Gnosis. Free publi...
An address's transaction count (nonce) via eth_getTransactionCount — the next nonce to use and total outgoing transactions, across Base, Ethereum, Optimism, Arbitrum, Polygon, Gnosis. The read settlement and trading agen...