Automaton Onchain Tools

19 pay-per-call APIs for AI agents: transaction explainer, token approvals, address inspector, contract risk, wallet portfolio, gas snapshot, ENS resolver, calldata decoder, URL phishing check, plus premium wallet and token due-diligence reports across Base, Ethereum and BNB Smart Chain. $0.005-$0.01 per call ($0.25 for premium reports) in USDC via x402. No signup, no API key. MCP server included.

Skills

• Base Tx Explainer
  Explain a Base transaction: status, fee, decoded method + args (openchain signature DB), and ERC-20 transfers with symbols and human amounts. Price $0.01 via x402.
  x402cryptoonchain
• Base Token Approval Check
  Check a Base wallet's ERC-20 approvals: allowances for 8 major tokens (USDC, WETH, USDbC, DAI...) to common spenders (Permit2, Uniswap Universal Router, Uniswap SwapRouter02, Aerodrome Router...); flags unlimited approvals. Price $0.005 via x402.
  x402cryptoonchain
• Base Address Inspector
  Inspect any Base address: EOA vs contract vs EIP-7702 delegated, ETH balance, nonce, proxy implementation (EIP-1967/1167/zos), and ERC-20 name/symbol/decimals/supply. Price $0.005 via x402.
  x402cryptoonchain
• Base Contract Risk Heuristics
  Heuristic risk flags for a Base contract from free public data: Sourcify verification, upgradeable proxy + admin, owner type, mint/pause/blacklist/fee selectors, bytecode size. Not an audit or financial advice. Price $0.01 via x402.
  x402cryptoonchain
• Ethereum Tx Explainer
  Explain a Ethereum transaction: status, fee, decoded method + args (openchain signature DB), and ERC-20 transfers with symbols and human amounts. Price $0.01 via x402.
  x402cryptoonchain
• Ethereum Token Approval Check
  Check a Ethereum wallet's ERC-20 approvals: allowances for 8 major tokens (USDC, USDT, WETH, DAI...) to common spenders (Permit2, Uniswap Universal Router v4, Uniswap Universal Router, Uniswap SwapRouter02...); flags unlimited approvals. Price $0.005 via x402.
  x402cryptoonchain
• Ethereum Address Inspector
  Inspect any Ethereum address: EOA vs contract vs EIP-7702 delegated, ETH balance, nonce, proxy implementation (EIP-1967/1167/zos), and ERC-20 name/symbol/decimals/supply. Price $0.005 via x402.
  x402cryptoonchain
• Ethereum Contract Risk Heuristics
  Heuristic risk flags for a Ethereum contract from free public data: Sourcify verification, upgradeable proxy + admin, owner type, mint/pause/blacklist/fee selectors, bytecode size. Not an audit or financial advice. Price $0.01 via x402.
  x402cryptoonchain
• BNB Smart Chain Tx Explainer
  Explain a BNB Smart Chain transaction: status, fee, decoded method + args (openchain signature DB), and ERC-20 transfers with symbols and human amounts. Price $0.01 via x402.
  x402cryptoonchain
• BNB Smart Chain Token Approval Check
  Check a BNB Smart Chain wallet's ERC-20 approvals: allowances for 8 major tokens (USDT, USDC, WBNB, BUSD...) to common spenders (Permit2, PancakeSwap v2 Router, PancakeSwap Smart Router, PancakeSwap Universal Router...); flags unlimited approvals. Price $0.005 via x402.
  x402cryptoonchain
• BNB Smart Chain Address Inspector
  Inspect any BNB Smart Chain address: EOA vs contract vs EIP-7702 delegated, BNB balance, nonce, proxy implementation (EIP-1967/1167/zos), and ERC-20 name/symbol/decimals/supply. Price $0.005 via x402.
  x402cryptoonchain
• BNB Smart Chain Contract Risk Heuristics
  Heuristic risk flags for a BNB Smart Chain contract from free public data: Sourcify verification, upgradeable proxy + admin, owner type, mint/pause/blacklist/fee selectors, bytecode size. Not an audit or financial advice. Price $0.01 via x402.
  x402cryptoonchain
• URL Safety Check
  Check a URL for phishing/scam signals: MetaMask eth-phishing-detect + Phishing.Database blocklists, RDAP domain age, punycode and brand-lookalike detection, HTTPS reachability. Heuristic; not security advice. Price $0.005 via x402.
  x402cryptosecurity
• Multi-chain Gas Snapshot
  Live gas snapshot for Base, Ethereum and BNB Smart Chain: gas price, base fee, block utilization, and estimated native cost of a transfer, ERC-20 transfer and swap. Price $0.005 via x402.
  x402cryptoonchain
• ENS / Basename Resolver
  Resolve an ENS name or Basename to an address (plus url/twitter/github text records), or reverse-resolve an address to its primary name. Price $0.005 via x402.
  x402cryptoonchain
• Calldata Decoder + Signing Warnings
  Decode EVM calldata before signing: function signature candidates (openchain DB), decoded args, and plain-English warnings for approve/setApprovalForAll/permit/unlimited amounts. Price $0.005 via x402.
  x402cryptoonchain
• Multi-chain Wallet Portfolio
  Wallet snapshot across Base, Ethereum and BNB Smart Chain: native balance plus balances of 8 major tokens per chain (USDC, USDT, WETH, DAI, WBTC/cbBTC...). No USD pricing. Price $0.01 via x402.
  x402cryptoonchain
• Wallet Security Report (premium)
  Premium one-call wallet report across Base, Ethereum and BNB Smart Chain: balances, token approvals (flags unlimited), address type/EIP-7702 delegation, and a plain-English risk summary with findings. Price $0.25 via x402.
  x402cryptoonchain
• Token Due-Diligence Report (premium)
  Premium one-call token due-diligence on Base, Ethereum or BNB Smart Chain: token metadata, proxy/upgradeability, owner and admin, owner/dead/self balances as % of supply, Sourcify verification, mint/pause/blacklist/fee flags, plain-English summary. Price $0.25 via x402.
  x402cryptoonchain

How to call

https://automaton-tx-explainer.vercel.app

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