{"uid":"cap_RkTggF-h6kjX-4Xj3tHlH","slug":"synthora-onchain-primitives-2101fc5d","name":"SYNTHORA Onchain Primitives","description":"Multichain deterministic onchain primitives: transaction receipts, tx lookup, wallet nonce, contract & EIP-1967 proxy detection, ENS resolution, ERC20 and native balances, contract introspection across Base, Ethereum, Polygon, Arbitrum and Optimism. Ed25519-signed. Pay-per-use via x402 USDC on Base.","url":"https://onchain.hergertsynthora.com/service","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"op":{"enum":["ens","receipt","tx","nonce","code","proxy","balance","erc20-balance","contract","network"],"type":"string","description":"Operation to perform"},"hash":{"type":"string","description":"Tx hash 0x… (receipt/tx)"},"name":{"type":"string","description":"ENS name e.g. vitalik.eth (ens)"},"chain":{"enum":["base","ethereum","polygon","arbitrum","optimism"],"type":"string","description":"Chain (default ethereum)"},"token":{"type":"string","description":"ERC20 token address (erc20-balance)"},"address":{"type":"string","description":"Address 0x… (nonce/code/proxy/balance/contract)"}}},"responseSchema":{"type":"json","example":{"ok":true,"niche":"onchain","result":{"op":"ens","name":"vitalik.eth","found":true,"signed":"ed25519","address":"0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_ax1J0fm2c45JcI9vJQ82r","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Multichain blockchain data API for transaction receipts, wallet lookups, ENS resolution, contract detection, and token balances across Base, Ethereum, Polygon, Arbitrum, and Optimism","exampleAgentPrompt":"Can you look up the transaction receipt for 0xabc123...def on Base, and also tell me whether the contract at 0x1234...5678 is an EIP-1967 proxy?","exampleUseCases":null,"resultDescription":"Returns deterministic, Ed25519-signed onchain data for the requested operation: transaction receipts and status, transaction details, wallet nonce, contract bytecode presence, proxy implementation addresses (EIP-1967), native ETH/MATIC/etc balances, ERC20 token balances, ENS name-to-address resolutions, and network metadata — all scoped to the specified chain.","failureModes":["Invalid or malformed address/hash returns validation error","ENS name not found or unregistered returns null or not-found response","Unsupported chain value returns enum validation error","Transaction hash not found on specified chain returns not-found","Missing required parameter for the chosen op (e.g. no address for nonce) returns parameter error","Network timeout or RPC unavailability may cause transient errors","Insufficient USDC balance or x402 payment failure prevents call execution"],"whenToPreferThis":"Choose this endpoint when you need reliable, deterministic, cryptographically-signed onchain data across multiple EVM chains (Base, Ethereum, Polygon, Arbitrum, Optimism) in a single unified API. Ideal for agents that need to verify transactions, inspect contract architecture, resolve ENS names, or check balances without managing multiple RPC providers. The Ed25519-signed responses make it suitable for workflows requiring tamper-evident onchain data.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:35:51.588Z","isFirstParty":false}