{"uid":"cap_GHjuRhHvdddLRbZqgHGr2","slug":"synapse-api-plasma-transaction-history-beade12e","name":"Synapse API — Plasma Transaction History","description":"High-speed API suite for AI processing, web scraping, and smart data utilities across 57+ blockchain networks. Pay-per-call via x402.","url":"https://synapse-api-brown.vercel.app/api/plasma/tx/history","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"order":{"enum":["asc","desc"],"type":"string"},"pageKey":{"type":"string"},"toBlock":{"type":"string"},"category":{"type":"array","items":{"type":"string"}},"maxCount":{"type":"number"},"fromBlock":{"type":"string"},"toAddress":{"type":"string"},"fromAddress":{"type":"string"},"withMetadata":{"type":"boolean"},"excludeZeroValue":{"type":"boolean"}}},"responseSchema":null,"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_3CiaY5Asj-yWwvtpiiHQt","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":"Retrieves paginated historical transactions for a blockchain address across 57+ networks using Alchemy's asset transfer API","exampleAgentPrompt":"Can you pull the last 50 incoming transactions to 0xABCD...1234 on Ethereum, sorted newest-first, and include the token metadata for each transfer?","exampleUseCases":[{"title":"DeFi portfolio transaction audit","prompt":"Show me all ERC-20 and ETH transfers sent to my wallet 0xABCD...1234 from block 18000000 to 19000000, sorted ascending, including metadata — I want to audit my DeFi activity over that period."},{"title":"NFT transfer history tracking","prompt":"Get the complete history of NFT transfers out of wallet 0xDEAD...BEEF, paginated in batches of 100, and skip any zero-value transfers — I need to track every NFT I've ever sold."},{"title":"Fraud investigation between two addresses","prompt":"Fetch all transactions between address 0xSENDER...1 and 0xRECEIVER...2 in descending order from the most recent block, so I can investigate whether there's been suspicious movement between these two wallets."}],"resultDescription":"Returns a paginated list of asset transfer records including transaction hashes, block numbers, from/to addresses, token amounts, contract addresses, asset categories, and optionally token metadata. A pageKey is included for fetching subsequent pages.","failureModes":["Invalid address format returns a 400 or empty result","Unknown category string may silently filter all results","pageKey expiration may cause pagination gaps","fromBlock/toBlock mismatch or invalid hex values may cause errors","maxCount exceeding API limits may return truncated results","Network not supported by underlying Alchemy endpoint returns error"],"whenToPreferThis":"Use this endpoint when you need historical on-chain transaction data for a specific wallet or address pair, especially when you need to filter by category (ERC-20, ERC-721, ETH), paginate through large histories, or filter by block range. Prefer this over block explorers when you need structured, machine-readable output for agent processing.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:54:52.265Z","isFirstParty":false}