# AgentToll Base Portfolio Valuation

> AgentToll Base Portfolio Valuation is a paid API for AI agents from agenttoll.app, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).

Returns the full USD-valued portfolio of a Base address, including ETH and all ERC-20 token holdings sorted by value, with a configurable spam filter floor

## Facts

- Endpoint: GET https://agenttoll.app/api/base/portfolio/:address
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agenttoll-base-portfolio-valuation-9fbc1c02
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_EehLO7w5fBVpA9woopQ9T

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 agenttoll-base-portfolio-valuation-9fbc1c02
```

Example prompt: What's the full portfolio value of Base address 0x1234567890abcdef1234567890abcdef12345678? List up to 30 holdings worth at least $5 each, sorted by value in USD.

## When to prefer this

Use this endpoint when you need a complete USD-denominated snapshot of all assets held by a Base wallet, especially when you want to filter out low-value spam tokens automatically. It combines ETH and ERC-20 balances in a single call, pre-sorted by value, so it's preferable to manually querying individual token balances when you need a portfolio overview. Ideal for wallet analytics, due diligence, net worth tracking, or feeding portfolio data into downstream agent decisions.

## Known failure modes

- Invalid address format (not a valid 0x 40-hex address) returns an error
- Address exists but holds no assets above the minValue floor returns an empty holdings list
- Limit parameter out of range (below 1 or above 50) returns a validation error
- Network or RPC issues on Base may cause transient failures
- Token price unavailable for an exotic ERC-20 may result in it being omitted or shown as $0

## How this service works

Wallet portfolio on Base: everything an address holds valued in USD, ETH plus its ERC-20 tokens, largest first, with a spam floor you set

## Output

A ranked list of the address's Base holdings — ETH and ERC-20 tokens — each with its USD value, ordered largest first. Spam tokens below the configured minValue floor are excluded. Includes up to the requested number of holdings (default 20, max 50).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object",
     "required": [
      "address"
     ],
     "properties": {
      "address": {
       "type": "string",
       "pattern": "^0x[0-9a-fA-F]{40}$"
      }
     }
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "limit": {
       "type": "integer",
       "maximum": 50,
       "minimum": 1,
       "description": "Optional. How many holdings to list, default 20"
      },
      "minValue": {
       "type": "number",
       "minimum": 0,
       "description": "Optional. USD floor per holding, default 1"
      }
     }
    }
   },
   "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/agenttoll-base-portfolio-valuation-9fbc1c02/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agenttoll.app](https://www.zero.xyz/host/agenttoll.app/llms.txt)