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Blockscout Account Abstraction Operation Lookup
x402
Blockscout Account Abstraction Operation 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).
Retrieves detailed data for a specific ERC-4337 account abstraction UserOperation by its hash on a given 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
Returns a detailed JSON object for the specified UserOperation including: fee, gas, gas price, gas used, nonce, call data, raw operation, status, consensus flag, and enriched address objects for the sender, bundler, factory, and paymaster — each with name, ENS domain, contract/scam/verified flags, public/private tags, reputation, proxy type, implementations, and watchlist names.
Example use cases
Debug a failed smart account transaction
“My smart account transaction failed — the UserOperation hash is 0xdeadbeef... on Polygon. Can you pull up the full details from Blockscout so I can see the gas used, the paymaster involved, and what the status is?”
Audit bundler activity for a UserOperation
“I need to verify which bundler processed the UserOperation 0x1234abcd... on Arbitrum — can you fetch the operation details and show me the bundler address and factory used?”
Verify paymaster coverage for a sponsored transaction
“We sponsored a user transaction via our paymaster — the UserOperation hash is 0x9876fedc... on Optimism. Can you check Blockscout and confirm the paymaster address and whether the operation was included successfully?”
Technical details
Endpoint
GEThttps://api.blockscout.com/%7Bchain_id%7D/api/v2/proxy/account-abstraction/operations/%7Boperation_hash_param%7DWhen to prefer
Choose this endpoint when you specifically need to inspect an ERC-4337 UserOperation by its hash on a supported blockchain network. It is the right choice for account abstraction debugging, paymaster auditing, bundler verification, or gas analysis on smart account operations. Prefer it over generic transaction lookup endpoints when the target is a UserOperation rather than a standard EOA transaction.
Side effects
- Invalid or unknown operation hash returns 404 or empty result
- Unsupported or incorrect chain_id returns error or empty response
- Malformed operation hash parameter causes 400 bad request
- Operation not yet indexed by Blockscout returns no data
- Network timeout or rate limit exceeded returns 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"fee": "string",
"gas": "string",
"raw": {},
"hash": "string",
"index": 0,
"nonce": "string",
"sender": {
"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"
}
]
},
"status": true,
"bundler": {
"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"
}
]
},
"factory": {
"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"
}
]
},
"gas_used": "string",
"call_data": "string",
"consensus": true,
"gas_price": "string",
"paymaster": {
"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"
}
]
},
"signature": "string",
"timestamp": "string",
"aggregator": "string",
"block_hash": "string",
"entry_point": {
"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"
}
]
},
"block_number": "string",
"bundle_index": 0,
"sponsor_type": "string",
"revert_reason": "string",
"call_gas_limit": "string",
"execute_target": {
"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"
}
]
},
"max_fee_per_gas": "string",
"user_logs_count": 0,
"transaction_hash": "string",
"decoded_call_data": {},
"execute_call_data": "string",
"entry_point_version": "string",
"aggregator_signature": "string",
"pre_verification_gas": "string",
"user_logs_start_index": 0,
"verification_gas_limit": "string",
"max_priority_fee_per_gas": "string",
"decoded_execute_call_data": {}
}
}Tags
x402
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