Northline ChainKit USDC Balance Lookup

x402

Northline ChainKit USDC Balance Lookup is a paid API for AI agents from northline-chainkit.northline-c86.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-30).

Fetches USDC token balances for a given Ethereum-compatible wallet address across Base and Arc chains.

Price / call$0.002

Seller volume →—

Success—

StatusUnknown

How this service works

x402 pay-per-call onchain API (Base + Arc).

Output

Returns a JSON object containing a list of USDC balances per chain, e.g. [{"usdc":"8.29","chain":"base"},{"usdc":"0.44","chain":"arc"}]. Each entry specifies the USDC amount as a decimal string and the chain name.

Example use cases

DeFi portfolio balance check

“Can you check how much USDC wallet 0x1A2B3C4D5E6F7A8B9C0D1E2F3A4B5C6D7E8F9A0B holds across Base and Arc right now?”

Payment eligibility verification

“Before I send an invoice, check if address 0xDEADBEEFCAFEBABE0000000000000000DEADBEEF has at least 50 USDC available on Base or Arc.”

Onchain treasury monitoring

“Pull the current USDC balance for our treasury wallet 0xABCDEF1234567890ABCDEF1234567890ABCDEF12 on both Base and Arc so I can update our dashboard.”

Technical details

Endpoint

GEThttps://northline-chainkit.northline-c86.workers.dev/v1/usdc/balances?utm_source=zero.xyz

When to prefer

Use this endpoint when you need real-time USDC balances for a specific wallet address across both Base and Arc chains in a single call. Prefer this over generic block explorers when you want a pay-per-use, structured JSON response with cross-chain aggregation and no API key setup — especially in agentic workflows using the x402 micropayment protocol.

Side effects

Invalid or malformed wallet address (not matching ^0x[0-9a-fA-F]{40}$) returns a validation error
Missing required 'address' query parameter results in a 400-level error
Payment not fulfilled (x402 payment required) results in a 402 response before data is returned
Wallet address exists but holds zero USDC — balances may return 0.00 for one or both chains
Chain-specific RPC outage may cause partial or failed responses for one chain

Input

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

Schema · Response

{
  "type": "json",
  "example": {
    "balances": [
      {
        "usdc": "8.29",
        "chain": "base"
      },
      {
        "usdc": "0.44",
        "chain": "arc"
      }
    ]
  }
}

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