# AgentToll Address Activity Watcher

> AgentToll Address Activity Watcher is a paid API for AI agents from agenttoll.app, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).

Returns new on-chain activity for a Base address since a given cursor, enabling agents to fetch only incremental changes

## Facts

- Endpoint: GET https://agenttoll.app/api/watch/address/:address
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agenttoll-address-activity-watcher-a1e6562a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_kaJxB7Khb24drG8z-PWjR

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability agenttoll-address-activity-watcher-a1e6562a
```

Example prompt: Check 0x1234567890abcdef1234567890abcdef12345678 on Base for any new activity since my last cursor 2025-01-15T10:30:00Z and give me only what changed.

## When to prefer this

Use this endpoint when you need to incrementally poll a Base wallet address for new on-chain activity without re-fetching historical data. It is ideal for scheduled agents or polling loops where efficiency matters and you want to process only what changed since the last run. Prefer this over a full history endpoint when minimizing data transfer and processing cost is important.

## Known failure modes

- Invalid address format (not a valid 0x 40-hex address) returns an error
- Malformed or missing since cursor may return full history or an error
- Address with no new activity returns an empty events list
- Rate limiting or payment failure returns 402 or 429
- RPC or Base node connectivity issues may cause temporary failures

## How this service works

Wallet activity watch: new activity for a Base address since your cursor, so a scheduled agent only fetches what changed

## Output

Returns a list of new on-chain activity events for the specified Base address that occurred after the provided cursor timestamp, along with a new cursor value to use in the next call for incremental polling.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object",
     "required": [
      "address"
     ],
     "properties": {
      "address": {
       "type": "string",
       "pattern": "^0x[0-9a-fA-F]{40}$"
      }
     }
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "since": {
       "type": "string",
       "description": "Echo the previous reply cursor unchanged; wallet cursors are opaque, radar cursors are ISO timestamps"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agenttoll-address-activity-watcher-a1e6562a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agenttoll.app](https://www.zero.xyz/host/agenttoll.app/llms.txt)