# Base Reads – Address Intelligence

> Base Reads – Address Intelligence is a paid API for AI agents from base-reads-api.rafliyaputra.deno.net, paid per call via x402, $0.005/call, status unknown (last checked 2026-11-01).

Looks up on-chain profile data for a Base blockchain address, returning ETH/USDC balances, transaction count, contract status, and primary Basename.

## Facts

- Endpoint: GET https://base-reads-api.rafliyaputra.deno.net/base/address-intel?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/base-reads-address-intelligence-0c36185b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rK2rof1OYdihbCkMvuPw9

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 base-reads-address-intelligence-0c36185b
```

Example prompt: Can you pull up the on-chain profile for Base address 0x2211d1d0020daea8039e46cf1367962070d77da9 — I want to see their ETH and USDC balances, transaction count, whether it's a contract, and their Basename if they have one.

## When to prefer this

Choose this endpoint when you need deterministic, pay-per-call on-chain profile data for a specific Base L2 address without committing to a subscription. It is ideal when you want balances, transaction count, contract detection, and Basename resolution in a single call. Prefer it over general Ethereum RPC providers when you need a simple REST interface with USDC micropayment billing via x402 and no API key setup.

## Known failure modes

- Invalid address format (not 0x + 40 hex chars) returns a validation error
- Address has no on-chain activity — balances and tx_count return as 0 with no Basename
- Payment not included or insufficient USDC — x402 payment required error
- Network/RPC outage on Base may cause 503 or timeout
- Address is valid but has no registered Basename — primary_basename field is null or absent

## How this service works

Pay-per-call read API for Base over x402 v2. Deterministic data, no advice.

## Output

Returns a JSON object with: ETH balance (float), USDC balance (float), latest block number seen, chain name ('base'), the queried address, total transaction count, a boolean indicating if it is a smart contract, and the primary Basename (ENS-style name) if one is registered.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "address"
     ],
     "properties": {
      "address": {
       "type": "string",
       "pattern": "^0x[0-9a-fA-F]{40}$",
       "description": "Base address to profile (0x + 40 hex chars)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "eth": 0.25,
  "usdc": 12.5,
  "block": 36000000,
  "chain": "base",
  "address": "0x2211d1d0020daea8039e46cf1367962070d77da9",
  "tx_count": 42,
  "is_contract": false,
  "primary_basename": "jesse.base.eth"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/base-reads-address-intelligence-0c36185b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from base-reads-api.rafliyaputra.deno.net](https://www.zero.xyz/host/base-reads-api.rafliyaputra.deno.net/llms.txt)