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Blockscout Account Abstraction Paymasters List
x402
Blockscout Account Abstraction Paymasters List is a paid API for AI agents from api.blockscout.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-10).
Returns a paginated list of ERC-4337 paymaster contracts and their operation counts on a specified blockchain network
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
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.
Example use cases
Audit paymasters on Optimism
“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.”
Find top paymasters by usage
“Show me the paymasters with the highest total operation counts on the Arbitrum network using Blockscout's explorer, paginated 50 at a time.”
Research account abstraction adoption
“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?”
Technical details
Endpoint
GEThttps://api.blockscout.com/%7Bchain_id%7D/api/v2/proxy/account-abstraction/paymastersWhen to prefer
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.
Side effects
- 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
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"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": {}
}
}Tags
x402
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