# Multi-chain Wallet Portfolio

> Multi-chain Wallet Portfolio is a paid API for AI agents from automaton-tx-explainer.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-17).

Returns native token balances and major ERC-20 token balances for a wallet address across Base, Ethereum, and BNB Smart Chain simultaneously.

## Facts

- Endpoint: GET https://automaton-tx-explainer.vercel.app/v1/portfolio?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/multi-chain-wallet-portfolio-c1fa40fb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_WfMKttqBLxQxM3gvKBpUY

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 multi-chain-wallet-portfolio-c1fa40fb
```

Example prompt: What are the token balances for wallet 0x742d35Cc6634C0532925a3b844Bc454e4438f44e across Base, Ethereum, and BNB Smart Chain — show me native balances plus USDC, USDT, WETH, DAI, and WBTC on each chain.

## When to prefer this

Choose this endpoint when you need a quick cross-chain balance snapshot for a single EVM wallet across Base, Ethereum, and BNB Smart Chain simultaneously, covering both native tokens and major ERC-20s, without needing USD pricing. Prefer this over single-chain inspectors when multi-chain aggregation in one call is needed.

## Known failure modes

- Invalid wallet address format (not 0x + 40 hex chars) returns a validation error
- RPC node timeouts or chain-specific outages may cause partial or failed responses
- Address with no activity returns zero balances for all tokens
- Rate limiting or payment failure for the $0.01 USDC x402 fee may block the request

## How this service works

Wallet snapshot across Base, Ethereum and BNB Smart Chain: native balance plus balances of 8 major tokens per chain (USDC, USDT, WETH, DAI, WBTC/cbBTC...). No USD pricing.

## Output

A structured snapshot of the wallet's holdings across Base, Ethereum, and BNB Smart Chain, including native coin balances (ETH, BNB) and balances of up to 8 major tokens per chain (USDC, USDT, WETH, DAI, WBTC, cbBTC, and others). No USD pricing is included — raw token amounts only.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "address"
     ],
     "properties": {
      "address": {
       "type": "string",
       "pattern": "^0x[0-9a-fA-F]{40}$",
       "description": "EVM wallet address"
      }
     }
    }
   },
   "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/multi-chain-wallet-portfolio-c1fa40fb/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from automaton-tx-explainer.vercel.app](https://www.zero.xyz/host/automaton-tx-explainer.vercel.app/llms.txt)