# Wallet Intel API - Identity Resolution

> Wallet Intel API - Identity Resolution is a paid API for AI agents from wallet-intel-api-production-3ec7.up.railway.app, paid per call via x402, $0.15/call, status unknown (last checked 2026-10-11).

Resolves an Ethereum or Base wallet address into a rich identity profile including ENS name, wallet age, transaction history, DeFi protocol interactions, token holdings, NFTs, and behavioral labels.

## Facts

- Endpoint: GET https://wallet-intel-api-production-3ec7.up.railway.app/api/v1/identity/:address?utm_source=zero.xyz
- Price: $0.15/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/wallet-intel-api-identity-resolution-c08c444e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4FyzYqjhpfa0rtFb1z-HB

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 wallet-intel-api-identity-resolution-c08c444e
```

Example prompt: Can you pull up the full identity profile for wallet 0x742d35Cc6634C0532925a3b844Bc454e4438f44e — I want to know their ENS name, how old the wallet is, what DeFi protocols they've used, and any behavioral labels from their on-chain activity?

## When to prefer this

Use this endpoint when you need a comprehensive on-chain identity snapshot for a single Ethereum or Base wallet — combining ENS resolution, wallet age, DeFi protocol history, token/NFT holdings, and behavioral labels in one call. Prefer this over raw blockchain RPC calls when you want pre-aggregated, labeled intelligence rather than raw transaction data.

## Known failure modes

- Invalid or malformed address (not 0x-prefixed or not 42 chars) returns an error
- Wallet address with zero on-chain activity may return mostly null/empty fields
- ENS resolution failure returns null for ENS field
- Rate limiting or upstream data provider unavailability may return 5xx errors
- Address not found on either Ethereum or Base returns empty profile

## How this service works

Wallet identity resolution. ENS name, wallet age, tx count, DeFi protocols, token holdings, NFTs, behavioral labels. Ethereum and Base.

## Output

Returns a structured identity object containing: resolved ENS name (or null), wallet age in days and first-seen timestamp, transaction counts per chain (Ethereum and Base), DeFi protocols the wallet has interacted with, ERC-20 token holdings count, NFT holdings count, and an array of behavioral labels derived from on-chain activity patterns.

## 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"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "address"
     ],
     "properties": {
      "address": {
       "type": "string",
       "description": "EVM wallet address to resolve (0x-prefixed, 42 chars). Any Ethereum or Base address."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "ens": {
       "type": "string",
       "description": "ENS name if resolved, null otherwise"
      },
      "nfts": {
       "type": "object",
       "description": "NFT holdings count"
      },
      "labels": {
       "type": "array",
       "items": {
        "type": "string"
       },
       "description": "Behavioral labels derived from on-chain activity"
      },
      "tokens": {
       "type": "object",
       "description": "ERC-20 token holdings count"
      },
      "address": {
       "type": "string"
      },
      "activity": {
       "type": "object",
       "description": "Transaction counts per chain"
      },
      "protocols": {
       "type": "object",
       "description": "DeFi protocols interacted with"
      },
      "walletAge": {
       "type": "object",
       "description": "Wallet age in days and first seen timestamp"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/wallet-intel-api-identity-resolution-c08c444e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from wallet-intel-api-production-3ec7.up.railway.app](https://www.zero.xyz/host/wallet-intel-api-production-3ec7.up.railway.app/llms.txt)