# agenttoll.app Base Address Snapshot

> agenttoll.app Base Address Snapshot is a paid API for AI agents from agenttoll.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Returns ETH balance, transaction count, and contract/EOA classification for a given Base network address

## Facts

- Endpoint: GET https://agenttoll.app/api/base/address/:address
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agenttoll-app-base-address-snapshot-25fb2d5a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zhvckAmUETna2S50cc71q

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-app-base-address-snapshot-25fb2d5a
```

Example prompt: Can you pull the on-chain snapshot for the Base address 0x1234567890abcdef1234567890abcdef12345678 — I want to know its ETH balance, total transaction count, and whether it's a contract or a regular wallet?

## When to prefer this

Use this endpoint when you need a quick, single-call snapshot of a Base network address — its ETH balance, transaction count, and contract/EOA classification — without needing full transaction history or token balances. Ideal for agents doing lightweight address profiling, pre-transfer checks, or building dashboards on Base chain data. The $0.001 per-call pricing and x402 protocol make it suitable for high-frequency automated lookups.

## Known failure modes

- Invalid address format (not matching 0x + 40 hex chars) returns a 400 error
- Address not found or never used on Base may return zero balances
- Network or RPC node downtime may result in timeouts or 5xx errors
- Payment not processed correctly (x402 protocol failure) results in 402 response

## How this service works

Base wallet lookup: an address's primary basename, ETH balance, transaction count, and whether it is a contract

## Output

Returns a structured snapshot of the Base address including its current ETH balance, total number of outgoing/incoming transactions, and a flag indicating whether the address is a smart contract or an externally owned account (EOA).

## 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": {}
    }
   },
   "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-app-base-address-snapshot-25fb2d5a/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)