{"uid":"cap_MVuXkmDBtGysT6IZm2m49","slug":"sendcheck-deep-scan-c83bde8b","name":"SendCheck Deep Scan","description":"Pre-send verification for EVM addresses. One paid HTTP call (x402, USDC on Base, no account, no API key) tells your agent whether an address is safe to send to: EIP-55 checksum, wallet-vs-contract, outgoing activity, native/USDC/USDT balances, and a leveled verdict (ok/caution/warn/danger) with reasons and a next action. Free checksum-only pre-check at GET /validate so you never pay for a malformed address.","url":"https://sendcheck-x402.pennyforgeorg.workers.dev/deep","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"chain":{"enum":["base","ethereum","arbitrum","optimism","polygon"],"type":"string","description":"Chain to scan (default: base)"},"address":{"type":"string","description":"EVM address to verify, 0x + 40 hex characters. Free format pre-check: GET /validate?address=…"}}},"responseSchema":{"type":"json","example":{"meta":{"ms":2140,"service":"sendcheck","version":"1.8.1"},"chain":{"name":"Base","usdc":"30.23","usdt":"0.00","block":50804109,"chain":8453,"native":"0.0026","reachable":true,"usdcUnits":"30230079","usdtUnits":"0","isContract":false,"outgoingTxs":3},"others":[{"name":"Ethereum","usdc":"0.00","usdt":"0.00","chain":1,"native":"0.0","reachable":true,"isContract":false,"outgoingTxs":12}],"report":"SendCheck deep scan …","address":"0x9504A5939AB5be2B2B1F8beA7D7ebeCcd96c485D","verdict":{"gas":"0.00000039 ETH","next":"Confirm you truly mean Base before sending.","level":"warn","reasons":["…"],"headline":"Address is more active on Ethereum than on Base.","tokenMismatch":null},"checksum":{"status":"valid","message":"Valid EIP-55 checksum address."}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_7vYIbm9-fZ0SDL5ZejLY2","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Performs a comprehensive pre-send safety check on an EVM address, returning checksum validity, wallet/contract classification, balance data, cross-chain activity, and a leveled verdict before you send crypto.","exampleAgentPrompt":"Before I send 50 USDC, do a deep scan on 0x9504A5939AB5be2B2B1F8beA7D7ebeCcd96c485D on Base — tell me if it's a real wallet, whether it's got any history, and whether it's safe to send to.","exampleUseCases":[{"title":"Pre-send safety check for DeFi transfer","prompt":"I'm about to send 200 USDC to 0xAbCd1234567890abcd1234567890ABCD12345678 on Arbitrum — can you run a full SendCheck deep scan and tell me if it's safe, whether it's a contract, and what the verdict is?"},{"title":"Detecting wrong-chain address risk","prompt":"Someone gave me this address to pay them on Base: 0x9504A5939AB5be2B2B1F8beA7D7ebeCcd96c485D — check if it's actually more active on Ethereum and whether I should be worried about sending to the wrong chain."},{"title":"Contract address verification before payment","prompt":"Before my agent sends a payment to 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 on Ethereum, verify whether that's a smart contract or a real wallet and give me the risk level."}],"resultDescription":"Returns a JSON object with: metadata (latency, service version), chain-specific data (native/USDC/USDT balances, block height, outgoing tx count, wallet/contract flag, reachability), cross-chain data for other EVM networks, EIP-55 checksum status, a human-readable report, and a structured verdict with a level (ok/caution/warn/danger), reasons array, headline, recommended next action, and estimated gas cost.","failureModes":["Malformed address (not 0x + 40 hex chars) — returns checksum error; use free GET /validate pre-check to avoid paying for this","Unsupported chain value — returns validation error","RPC node unreachable for selected chain — may return partial data or timeout","Address not yet active on selected chain — outgoingTxs will be 0, verdict may be caution","Payment failure via x402/USDC on Base — call not processed"],"whenToPreferThis":"Choose SendCheck Deep Scan when you need a comprehensive, multi-signal safety verdict before sending crypto — especially when you want wallet/contract classification, cross-chain activity comparison, and token balances in a single call. Prefer it over a simple checksum validator when the transfer amount is significant or the recipient address is unfamiliar. The $0.05 USDC flat fee with no account or API key required makes it ideal for agent-driven payment flows on Base, Ethereum, Arbitrum, Optimism, or Polygon.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-18T06:34:57.392Z","isFirstParty":false}