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Blockscout Account Abstraction Paymaster Lookup
x402
Blockscout Account Abstraction Paymaster Lookup is a paid API for AI agents from api.blockscout.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-13).
Retrieve paymaster address details and total operation count for a given paymaster on a specified blockchain via Blockscout's account abstraction proxy
Price / call$0.002
Success—
StatusUnknown
How this service works
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
Output
Returns a JSON object containing the paymaster's address details (hash, name, scam flag, reputation, contract status, verification status, proxy type, ENS domain, public/private tags, watchlist names, implementations metadata) and the total number of account abstraction operations (total_ops) sponsored by that paymaster on the specified chain.
Example use cases
Verify ERC-4337 paymaster legitimacy
“Check if the paymaster at 0xDFF7FA1077Bce740a6a212b3995990682c0Ba66d on Optimism (chain ID 10) is a verified contract and whether Blockscout has flagged it as a scam.”
Track paymaster operation volume
“How many total operations has the paymaster 0xE93eca6595fe94091DC1af46aaC2A8b5D7990770 sponsored on Ethereum mainnet (chain ID 1)? Pull the data from Blockscout.”
Enrich paymaster address metadata
“Get me the full metadata for paymaster address 0x4685d9587a7F72Da32dc323bfFF17627aa632C61 on Polygon (chain ID 137) — including its name, ENS domain, proxy type, and any public tags Blockscout has recorded.”
Technical details
Endpoint
GEThttps://api.blockscout.com/%7Bchain_id%7D/api/v2/proxy/account-abstraction/paymasters/%7Baddress_hash_param%7DWhen to prefer
Use this endpoint when you need structured on-chain metadata and account abstraction operation statistics for a specific paymaster address on a particular blockchain supported by Blockscout. It is especially useful when you want to verify a paymaster's legitimacy (scam flag, verification status), understand its reputation and tagging, or count its sponsored operations — all in a single cross-chain-aware call. Prefer this over generic block explorers when you need programmatic, structured JSON data rather than a human-readable UI, or when operating across multiple EVM chains via a unified API.
Side effects
- Invalid or malformed address_hash_param returns an error or empty result
- Unsupported chain_id returns a 404 or chain-not-found error
- Non-paymaster address returns a result with total_ops of 0 and no paymaster-specific metadata
- Rate limiting or payment failure returns a 402 or 429 response
- Address not indexed by Blockscout on the specified chain returns empty or null fields
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"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
}
}Tags
x402
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