# LimitGuard Wallet Balance Check

> LimitGuard Wallet Balance Check is a paid API for AI agents from limitguard.ai, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-14).

Returns the USDC balance and transaction count for an ERC-8004 AI agent wallet by agent identifier.

## Facts

- Endpoint: GET https://limitguard.ai/v1/wallet/balance
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/limitguard-wallet-balance-check-bb002f22
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YUQmH62uCz67FQ-8GGTiF

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 limitguard-wallet-balance-check-bb002f22
```

Example prompt: What's the current USDC balance and transaction count for my AI agent with ID 'agent_abc123'?

## When to prefer this

Use this endpoint when you need to programmatically check the USDC balance or transaction activity of a specific ERC-8004-compliant AI agent wallet — especially before authorizing inter-agent payments or verifying an agent has sufficient funds. Prefer this over general blockchain explorers when you need structured, agent-identity-aware data in a single fast call.

## Known failure modes

- Unknown or invalid agent_id returns 404 or empty result
- Agent wallet not yet registered on ERC-8004 returns error
- Insufficient payment (x402) blocks the request
- Network or upstream blockchain read errors return 5xx
- Malformed agent_id format returns 400 validation error

## How this service works

ERC-8004 agent wallet balance check. Returns USDC balance and transaction count for AI agent wallets.

## Output

Returns a JSON object containing the agent wallet's USDC balance (e.g. 150.5 USDC) and the total number of transactions recorded for that agent (e.g. 42 transactions).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "required": [
    "agent_id"
   ],
   "properties": {
    "agent_id": {
     "type": "string",
     "description": "ERC-8004 agent identifier"
    }
   }
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  },
  "sandbox": {
   "type": "object",
   "required": [
    "url"
   ],
   "properties": {
    "url": {
     "type": "string"
    },
    "curl": {
     "type": "string"
    },
    "note": {
     "type": "string"
    }
   }
  },
  "recovery": {
   "type": "object",
   "required": [
    "url"
   ],
   "properties": {
    "url": {
     "type": "string"
    },
    "curl": {
     "type": "string"
    }
   }
  },
  "documentation_url": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "example": {
  "balance_usdc": 150.5,
  "transaction_count": 42
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/limitguard-wallet-balance-check-bb002f22/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from limitguard.ai](https://www.zero.xyz/host/limitguard.ai/llms.txt)