# x402 Base Tools – Address Profile Lookup

> x402 Base Tools – Address Profile Lookup is a paid API for AI agents from wt7tysfcmjm8fpzl.68r.lambda-web.us-east-1.on.aws, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-29).

Retrieves a live on-chain profile for a Base mainnet address including ETH/USDC balances, type, Basename, token holdings, x402 seller status, and recent transaction count.

## Facts

- Endpoint: GET https://wt7tysfcmjm8fpzl.68r.lambda-web.us-east-1.on.aws/v1/address?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-base-tools-address-profile-lookup-6905348c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Z6VL6Zwc3Huod-JGtbG53

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 x402-base-tools-address-profile-lookup-6905348c
```

Example prompt: Can you pull up the full on-chain profile for Base address 0x1234...abcd — I want to know their ETH and USDC balances, whether it's a wallet or contract, their Basename if they have one, and whether they're an x402 seller?

## When to prefer this

Use this endpoint when you need a comprehensive, live on-chain snapshot of a Base mainnet address — combining balance, identity (Basename), account type, x402 seller status, and activity — in a single paid-per-call lookup. Prefer this over separate RPC calls when you want enriched metadata (Basename, x402 seller info) beyond raw chain data, and when operating in an agent context where micropayment-per-call (USDC via x402) is acceptable.

## Known failure modes

- Invalid address format returns an error (not charged)
- Address does not exist on Base — returns empty/null fields, not charged
- RPC or chain data temporarily unavailable — may return 5xx
- Payment failure (insufficient USDC or x402 auth) blocks the request
- Rate limiting if called in rapid succession without valid payment

## How this service works

Base mainnet data for agents, read live from the chain and paid per call in USDC: gas prices and costs, token prices from Uniswap and Aerodrome pools, balances, token info, transaction decoding, x402 payment checks, EIP-3009 authorization status, Basenames and address profiles. Lookups of things that do not exist are not charged.

## Output

Returns a JSON object with: ETH balance (string, e.g. '0.001'), USDC balance (string, e.g. '8.98'), account type ('eoa' or contract type), token info (null if none), Basename (null if unregistered), x402_seller object (with origins array and listing count, if applicable), and recent transaction count. Non-existent addresses are not charged.

## 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"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "address"
     ],
     "properties": {
      "address": {
       "type": "string",
       "description": "the address (0x...)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "eth": {},
      "type": {},
      "usdc": {},
      "token": {},
      "basename": {},
      "x402_seller": {},
      "transactions": {}
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "eth": "0.001",
  "type": "eoa",
  "usdc": "8.98",
  "token": null,
  "basename": null,
  "x402_seller": {
   "origins": [
    "https://..."
   ],
   "listings": 28
  },
  "transactions": 3
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-base-tools-address-profile-lookup-6905348c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from wt7tysfcmjm8fpzl.68r.lambda-web.us-east-1.on.aws](https://www.zero.xyz/host/wt7tysfcmjm8fpzl.68r.lambda-web.us-east-1.on.aws/llms.txt)