Paid services matching “calldata”

Base EVM Transaction Calldata, Logs & Transfer Decoder ($0.010 USDC). Deterministic decoding of transaction calldata, status, gas metrics, method selector, and event logs (EIP-3009, Transfer, Swap) on Base Mainnet.

Simulate an EVM transaction before signing. Decodes the calldata into a named function with arguments and security risk flags, AND runs a keyless static eth_call preview to tell you whether the transaction would succeed or revert (with the decoded revert reason). Use it to catch a failing or malicious transaction before you broadcast it. Read-only, no keys, no node infra. Asset-level change tracin

Strict Solidity ABI calldata decoder — decode canonical EVM smart-contract function calls or typed values, verify selectors, and reject ambiguous offsets or padding.

Simulate one unsigned Base transaction before an agent signs it. Runs eth_call and gas estimation on current chain state, decodes the intent (ERC-20 transfer, approve, NFT setApprovalForAll), flags unlimited approvals, calldata sent to a non-contract, zero-address targets, reverts and destination risk labels such as phishing or sanctions. Returns ALLOW, WARN, BLOCK or INCOMPLETE with findings. No

Decide whether to grant an ERC-20, NFT or Permit2 allowance before signing it. Send owner, token, spender and amount, or the unsigned approve, setApprovalForAll or Permit2 calldata. Returns allow, warn, block or unknown with the allowance already on chain, the requested scope and the rule behind it, whether this raises or lowers exposure, and whether the spender is a contract, upgradeable or denyl

Approval Exposure Report by Agentropolis: every open ERC-20, NFT-operator and Permit2 approval on a Base wallet, flagging unlimited allowances, plain-wallet or unverified spenders and drainer patterns -> clean / review / revoke_now, with revoke calldata.

Builds a gas-optimized multi-recipient payout plan: either a list of native transfers or a single Multicall3 aggregate3 batch of ERC20 transfer() calls. Returns calldata only - this service never signs or broadcasts.

chainpeek (Tanod) portfolio read: the native balance and up to 20 ERC-20 balances of an address on Ethereum, Base or Robinhood Chain in one call. Read-only. On-chain strings are attacker-controlled. Use when an agent needs an address's ETH balance and up to 20 token balances in one call.

Cross-exchange spread tick — ONE $0.02 call returns the live executable spread for a pair across Binance, Coinbase, Kraken, Bybit: best bid venue, best ask venue, spread in bps, and a deterministic TRADE / THIN / NONE verdict. Built for arbitrage monitoring loops; escalate to /api/crypto ($0.07) for the full CEX arbitrage read with fees and transfer paths. 30s freshness, no LLM in the path.