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AgentToll — Base Address Transaction Watch
x402
AgentToll — Base Address Transaction Watch is a paid API for AI agents from agenttoll.app, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-13).
Streams recent onchain transaction events for a Base address, with optional cursor-based pagination for incremental updates
Price / call$0.002
Success—
StatusUnknown
How this service works
Base-native onchain data for AI agents — gas, token prices by contract, address analytics, DEX pools, new-token radar. From $0.001 a call in USDC via x402. No API keys. Open source.
Output
A JSON object containing the queried address, chain identifier ('base'), event count, the since and cursor timestamps for pagination, and an array of transaction events each with timestamp, transaction hash, decoded method name, ETH value, direction (in/out), and counterparty address.
Example use cases
DeFi wallet activity audit
“Pull all the recent transactions for Base address 0xABC123...7890 — I need to see the method names, directions, and counterparties so I can audit what's been happening onchain.”
Incremental transaction polling for an agent
“My agent last checked address 0x1234...5678 on Base at 2026-08-05T08:40:01Z — grab only the new transactions since that cursor so I can process the delta without re-fetching everything.”
Incoming transfer detection for a payment workflow
“Keep an eye on Base address 0xDEAD...BEEF and tell me every time a new inbound transfer comes in — I want the hash, value, and sender for each one.”
Technical details
Endpoint
GEThttps://agenttoll.app/api/watch/address/%7Baddress%7DWhen to prefer
Choose this endpoint when you need granular, per-transaction event data for a specific Base address, especially for incremental polling using cursor-based pagination. It is ideal for agent workflows that need to detect new activity since a known timestamp without re-fetching the full history. Prefer it over snapshot endpoints when you need decoded method names, transfer direction, and counterparty details per event. It is Base-native and requires no API key — only a small USDC micropayment per call via x402.
Side effects
- Invalid address format (not 0x + 40 hex chars) returns a 4xx error
- Malformed or future ISO cursor returns an error or empty event set
- Address with no transaction history returns an empty events array
- Payment failure via x402 (insufficient USDC balance) blocks the request
- Rate limiting if too many calls are made in rapid succession
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"at": "2026-08-05T13:31:58.678Z",
"chain": "base",
"count": 1,
"since": "2026-08-05T08:40:01Z",
"cursor": "2026-08-05T12:10:44Z",
"events": [
{
"at": "2026-08-05T12:10:44Z",
"hash": "0x4893...3c91",
"method": "transferWithAuthorization",
"ethValue": 0,
"direction": "in",
"counterparty": "0x5f87...6f78"
}
],
"address": "0xe553...56f8"
}
}Tags
x402
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