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SKILL verified MIT Self-run

Pinion Balance

skill-chu2bard-pinion-os-balance · by chu2bard

Get ETH and USDC balances for any Ethereum address on Base. Costs $0.01 USDC via x402.

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Install

$ agentstack add skill-chu2bard-pinion-os-balance

✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.

Security review

✓ Passed

No issues found. Passed automated security review. · v0.1.0 How review works →

  • ✓ Prompt-injection patterns
  • ✓ Secret / credential exfiltration
  • ✓ Dangerous shell & filesystem operations
  • ✓ Untrusted network calls
  • ✓ Known-malicious package signatures

What it can access

  • ● Network access Used
  • ✓ Filesystem access No
  • ✓ Shell / process execution No
  • ✓ Environment & secrets No
  • ✓ Dynamic code execution No

From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.

View the full security report →

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[![AgentStack Verified](https://agentstack.voostack.com/badges/verified.svg)](https://agentstack.voostack.com/security/report/skill-chu2bard-pinion-os-balance)

Reliability & compatibility

✓ Security review passed
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Declared compatibility

Claude CodeClaude Desktop

Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.

Preview Execution monitoring

We're building live execution health for every listing: tool-call success rate, median latency, uptime, and last-checked timestamps, measured, not self-reported. It isn't live yet, so we don't show numbers we can't stand behind.

How agent discovery & health will work →
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About

Balance Lookup

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.

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

Install and usage instructions live in the source repository linked above.

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Versions

  • v0.1.0 Imported from the upstream source.

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