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JPYC Multi-Chain Balance Lookup
x402
JPYC Multi-Chain Balance Lookup is a paid API for AI agents from open-pay.jp, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).
Returns the live JPYC stablecoin balance of any Ethereum-compatible address across Polygon, Kaia, Avalanche, and Ethereum in a single call
Price / call$0.002
Success—
StatusUnknown
How this service works
Read the current on-chain JPYC balance of any EVM address on one or all supported chains (Polygon, Kaia, Avalanche, Ethereum), with the token contract and the block number observed at request time. Use before or after a payment, for treasury checks, wallet monitoring, and payment reconciliation. The result does not prove wallet ownership and is not a transaction-finality certificate.
Output
Returns per-chain JPYC token balances (as on-chain balanceOf reads) for the queried address, including the block number at which each balance was read, covering up to four chains (Polygon, Kaia, Avalanche, Ethereum) with no indexer lag.
Example use cases
Portfolio tracker checking JPYC holdings
“Can you check how much JPYC the wallet 0xAbC1234567890abcdef1234567890abcdef123456 holds right now on Polygon? I want the live on-chain balance, not a cached number.”
Multi-chain JPYC audit for a DeFi app
“I need to see the total JPYC balance for address 0xAbC1234567890abcdef1234567890abcdef123456 spread across all supported chains — Polygon, Kaia, Avalanche, and Ethereum — can you pull that all in one go?”
Verifying JPYC receipt before releasing goods
“Has the payment arrived yet? Check the JPYC balance on Avalanche for wallet 0xAbC1234567890abcdef1234567890abcdef123456 and tell me the current block number so I know it's live data.”
Technical details
Endpoint
GEThttps://open-pay.jp/api/paid/usdc/jpyc/balanceWhen to prefer
Choose this endpoint when you need live, block-number-anchored JPYC balances with no indexer lag across one or all of Polygon, Kaia, Avalanche, and Ethereum in a single API call. It is ideal for payment verification, compliance checks, or portfolio queries where real-time accuracy and multi-chain coverage matter more than historical data or transaction history.
Side effects
- Invalid address format (not a 0x-prefixed 40-hex-character address) returns a validation error
- Unsupported chain enum value returns an error listing valid options
- RPC node timeouts on a specific chain may cause partial or failed responses
- Rate limiting if request volume exceeds plan thresholds
- Network congestion on a chain can slow real-time block reads slightly
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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