{"uid":"cap_ad3kzrA_WgJ1agIX-zNnv","slug":"blockscout-account-abstraction-paymasters-list-1acee501","name":"Blockscout Account Abstraction Paymasters List","description":"Explore crypto activities with Blockscout's multichain search. Find transactions, addresses, tokens, and dapps across top blockchain networks — your go-to explorer for cross-chain blockchain data","url":"https://api.blockscout.com/%7Bchain_id%7D/api/v2/proxy/account-abstraction/paymasters","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"pathParams":{"type":"object","properties":{"chain_id":{"type":"string"}}},"queryParams":{"type":"object","properties":{"page_size":{"type":"integer"},"page_token":{"type":"string"},"items_count":{"type":"integer"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"items":[{"address":{"hash":"string","name":"string","is_scam":true,"metadata":{},"proxy_type":"string","reputation":"string","is_contract":true,"is_verified":true,"public_tags":[{"label":"string","address_hash":"string","display_name":"string"}],"private_tags":[{"label":"string","address_hash":"string","display_name":"string"}],"ens_domain_name":"string","implementations":[{"name":"string","address_hash":"string"}],"watchlist_names":[{"label":"string","display_name":"string"}]},"total_ops":0}],"next_page_params":{}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_gr-wEdQp41Uep_R_mC2o4","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a paginated list of ERC-4337 paymaster contracts and their operation counts on a specified blockchain network","exampleAgentPrompt":"Show me all the ERC-4337 paymaster contracts tracked by Blockscout on the Base chain — list up to 25 per page.","exampleUseCases":[{"title":"Audit paymasters on Optimism","prompt":"Pull the list of all ERC-4337 paymaster contracts active on Optimism from Blockscout — I want to see which ones are verified and how many operations they've handled."},{"title":"Find top paymasters by usage","prompt":"Show me the paymasters with the highest total operation counts on the Arbitrum network using Blockscout's explorer, paginated 50 at a time."},{"title":"Research account abstraction adoption","prompt":"I'm researching account abstraction adoption on Polygon — can you fetch the full list of paymasters from Blockscout and tell me how many are scam-flagged or unverified?"}],"resultDescription":"A paginated JSON response containing an array of paymaster objects, each with the contract address (hash, name, verification status, proxy type, reputation, ENS domain, public/private tags, implementations, watchlist names, scam flag) and total operation count. Also includes next_page_params for cursor-based pagination.","failureModes":["Invalid or unsupported chain_id returns an error or empty result","Network not indexed by Blockscout returns 404 or empty items array","Malformed page_token causes pagination error","Rate limiting or payment failure returns 402 or 429","No paymasters indexed on the given chain returns empty items list"],"whenToPreferThis":"Use this endpoint when you need to enumerate ERC-4337 paymaster contracts across a specific blockchain network via Blockscout's explorer. Prefer it over generic contract search when you specifically want account-abstraction-layer paymaster data with operation counts, scam flags, and tag metadata. Best suited for analytics, compliance audits, or UI dashboards that need structured paymaster discovery across multiple chains.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-10T00:59:12.727Z","isFirstParty":false}