Balance Lookup
SkillDev toolsGet ETH and USDC balances for any Ethereum address on Base. Costs $0.01 USDC via x402.
Available today. Use it from your connected AI after setup.
No other account needed.
Connect ahel once, and every AI you use reads what you have installed.
Then ask your AI: use the Balance Lookup skill
What this skill tells your AI
The instructions your AI receives, as published by chu2bard/pinion-os in skills/balance/SKILL.md and read by ahel’s review.
Returns ETH and USDC balances for any address on Base mainnet.
Endpoint
GET https://pinionos.com/skill/balance/:address
Price: $0.01 USDC per call (x402 on Base)
Parameters
| Parameter | Type | Required | Description |
|---|---|---|---|
| address | string | yes | Ethereum address (0x, 40 hex chars) |
Example Request
curl https://pinionos.com/skill/balance/0x101Cd32b9bEEE93845Ead7Bc604a5F1873330acf
The first request returns HTTP 402 with payment requirements. Sign a USDC TransferWithAuthorization (EIP-3009) and retry with the X-PAYMENT header.
Example Response
{
"address": "0x101Cd32b9bEEE93845Ead7Bc604a5F1873330acf",
"network": "base",
"balances": {
"ETH": "0.042100",
"USDC": "12.50"
},
"timestamp": "2026-02-16T12:00:00.000Z"
}
When to Use
- Check any wallet's ETH and USDC holdings on Base before sending or trading.
- Verify an agent's funding level.
- Confirm a payment was received.
Signals
- GitHub stars
- 96
- Forks
- 5
- Last commit
- Feb 2026
Advanced
- Catalog kind
- skill
- Gateway key
pinion-balance- Source
- github.com/chu2bard/pinion-os