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Blockscout Watchlist Transactions
x402
Blockscout Watchlist Transactions is a paid API for AI agents from api.blockscout.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-11).
Retrieves paginated transactions from a user's watchlist on a specified blockchain network via Blockscout
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 paginated list of transaction objects for watched addresses on the specified chain. Each item includes transaction hash, from/to addresses with metadata (ENS names, tags, contract status, scam flags), fee breakdown, gas details, token transfers, decoded input data, timestamps, block number, confirmations, and chain-specific data (e.g. Arbitrum batch and commitment info). Also returns a 'next_page_params' object for cursor-based pagination.
Example use cases
DeFi wallet activity monitoring
“Pull the last 50 watchlist transactions on Arbitrum from Blockscout so I can see what my monitored DeFi addresses have been doing lately.”
Cross-chain portfolio surveillance
“Get me the most recent watchlist transactions on Polygon from Blockscout — I want to check if any of my saved addresses moved tokens in the last few blocks.”
Paginated transaction audit
“Fetch the next page of watchlist transactions on Ethereum from Blockscout, starting at index 20 with 10 items per page, so I can audit my watched addresses' activity around block 18500000.”
Technical details
Endpoint
GEThttps://api.blockscout.com/%7Bchain_id%7D/api/v2/transactions/watchlistWhen to prefer
Use this endpoint when you need to monitor or audit transactions specifically for a curated set of addresses saved in a Blockscout watchlist, across a specific blockchain network. Prefer this over general transaction search when the user wants ongoing surveillance of known addresses rather than a one-off lookup. Best for portfolio trackers, compliance tools, or alert systems watching specific wallets.
Side effects
- Invalid or unsupported chain_id returns 404 or empty result
- Missing authentication or watchlist not configured returns empty items array
- Invalid pagination parameters (negative index or items_count) may return 400 error
- Rate limiting may occur for high-frequency polling
- Truncated response schema may omit some fields for complex transactions
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"items": [
{
"to": {},
"fee": {
"type": "string",
"value": "string"
},
"from": {
"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"
}
]
},
"hash": "string",
"type": 0,
"nonce": 0,
"value": "string",
"method": "string",
"result": {},
"status": "string",
"arbitrum": {
"status": "string",
"poster_fee": "string",
"network_fee": "string",
"batch_number": 0,
"gas_used_for_l1": "string",
"gas_used_for_l2": "string",
"contains_message": "string",
"batch_data_container": "string",
"message_related_info": {
"message_id": 0,
"message_status": "string",
"associated_l1_transaction_hash": "string"
},
"commitment_transaction": {
"hash": "string",
"status": "string",
"timestamp": "string"
},
"confirmation_transaction": {
"hash": "string",
"status": "string",
"timestamp": "string"
}
},
"gas_used": "string",
"position": 0,
"gas_limit": "string",
"gas_price": "string",
"raw_input": "string",
"timestamp": "string",
"block_number": 0,
"priority_fee": "string",
"confirmations": 0,
"decoded_input": {},
"exchange_rate": "string",
"revert_reason": {},
"max_fee_per_gas": "string",
"token_transfers": [
{
"to": {
"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"
}
]
},
"from": {
"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"
}
]
},
"type": "string",
"token": {
"name": "string",
"type": {},
"symbol": "string",
"decimals": "string",
"icon_url": "string",
"reputation": "string",
"volume_24h": "string",
"bridge_type": "string",
"address_hash": "string",
"total_supply": "string",
"exchange_rate": "string",
"holders_count": "string",
"foreign_address": "string",
"origin_chain_id": "string",
"circulating_supply": "string",
"circulating_market_cap": "string"
},
"total": {},
"method": "string",
"log_index": 0,
"timestamp": "string",
"block_hash": "string",
"token_type": "string",
"block_number": 0,
"transaction_hash": "string"
}
],
"transaction_tag": "string",
"base_fee_per_gas": "string",
"created_contract": {},
"is_pending_update": true,
"transaction_types": [
"string"
],
"authorization_list": [
{
"r": "string",
"s": "string",
"v": 0,
"nonce": "string",
"status": "string",
"chain_id": 0,
"authority": "string",
"address_hash": "string"
}
],
"fhe_operations_count": 0,
"confirmation_duration": [
0
],
"transaction_burnt_fee": "string",
"historic_exchange_rate": "string",
"max_priority_fee_per_gas": "string",
"token_transfers_overflow": true,
"has_error_in_internal_transactions": true
}
],
"next_page_params": {}
}
}Tags
x402
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