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Oblique Markets Base USDC Balance
x402
Oblique Markets Base USDC Balance is a paid API for AI agents from api.oblique.markets, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).
Returns the live USDC balance of any Base mainnet wallet address by calling balanceOf on the canonical USDC contract
Price / call$0.003
Success—
StatusUnknown
How this service works
Use when an agent needs base usdc balance. Returns Check a Base wallet’s USDC balance on the canonical Base USDC contract and return structured JSON with atomic and formatted values. $0.003.
Output
Returns the live USDC balance of the queried Base mainnet address, read directly from the canonical USDC contract's balanceOf function. The balance is expressed in USDC's native 6-decimal format (i.e., divide by 1,000,000 to get the human-readable amount). Data is sourced from redundant public RPCs for reliability.
Example use cases
Pre-trade USDC availability check
“Before I execute a swap, can you check if wallet 0x4838B106FCe9647Bdf1E7877BF73cE8B0BAD5f97 currently has at least 500 USDC on Base mainnet?”
Portfolio USDC snapshot for reporting
“Pull the live USDC balance on Base for address 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 — I need the exact amount for my holdings report.”
Stablecoin liquidity monitoring for a DeFi bot
“Check the USDC balance of 0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD on Base right now so my bot can decide whether to trigger a rebalance.”
Technical details
Endpoint
GEThttps://api.oblique.markets/api/v1/paid/base-usdc-balanceWhen to prefer
Choose this endpoint when you need a fast, trustless, real-time read of a specific wallet's USDC balance on Base mainnet without running your own node. Ideal for agents that need to verify stablecoin liquidity before executing transactions, for portfolio monitoring, or for any workflow that requires on-chain USDC balance data on Base. Prefer over general blockchain explorers when you need a simple, cost-effective, API-accessible balance check with no setup.
Side effects
- Invalid or malformed EVM address (not matching ^0x[0-9a-fA-F]{40}$) returns a 400 or validation error
- Address with zero USDC returns a valid response with balance of 0, not an error
- RPC node downtime across redundant providers could cause temporary unavailability
- Payment failure (insufficient x402 USDC) results in a 402 Payment Required response
- Querying a non-Base-mainnet address (e.g., Ethereum mainnet address) will still return a result but may show 0 if the address holds no Base USDC
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"as_of": "2026-08-10T12:00:00.000Z",
"address": "0x4200000000000000000000000000000000000006",
"balance_usdc": "1523.400000",
"balance_atomic": "1523400000"
}
}Tags
x402
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