# Otto Multi-Chain Portfolio Balances

> Otto Multi-Chain Portfolio Balances is a paid API for AI agents from x402-trading.useotto.xyz, paid per call via x402, $0.001000/call, status unknown (last checked 2026-09-15).

Returns token balances and yield positions across Safe accounts on multiple chains for a given EVM wallet address

## Facts

- Endpoint: GET https://x402-trading.useotto.xyz/portfolio
- Price: $0.001000/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-trading-useotto-xyz-9a241d7d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_tLDXUVDZMLJkz5cdXc5Mf

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-trading-useotto-xyz-9a241d7d
```

Example prompt: Show me the full portfolio for wallet 0x1234567890abcdef1234567890abcdef12345678 — I want to see all token balances and yield positions across my Safe accounts on every chain.

## When to prefer this

Use this endpoint when you need a comprehensive multi-chain view of a user's Safe account holdings including both spot token balances and active DeFi yield positions. Prefer this over single-chain balance endpoints or exchange-specific endpoints when the user wants a holistic DeFi portfolio snapshot.

## Known failure modes

- Missing or invalid userId query parameter returns an error
- Non-EVM or malformed wallet address (not 0x...) causes a validation failure
- Wallet address with no associated Safe accounts returns an empty portfolio
- Network timeout or upstream chain RPC failure may return partial or error response
- Payment not attached or insufficient USDC balance results in 402 Payment Required

## How this service works

Multi-chain portfolio with token balances and yield positions across Safe accounts

## Output

A portfolio object containing token balances and yield positions (e.g. Aave V3, Morpho) aggregated across the user's Safe accounts on multiple chains, along with a status field indicating success.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {
   "userId": "0x1234567890abcdef1234567890abcdef12345678"
  }
 }
}
```

## 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": [
      "userId"
     ],
     "properties": {
      "userId": {
       "type": "string",
       "description": "EVM wallet address (0x...)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "status": {
       "type": "string"
      },
      "portfolio": {
       "type": "object"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-trading-useotto-xyz-9a241d7d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-trading.useotto.xyz](https://www.zero.xyz/host/x402-trading.useotto.xyz/llms.txt)