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Synapse API — Ink Network Token Balance Lookup
x402
Synapse API — Ink Network Token Balance Lookup is a paid API for AI agents from synapse-api-brown.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).
Retrieves token balances for a given wallet address across specified ERC-20 contract addresses on the Ink blockchain network
Price / call$0.01
Success—
StatusUnknown
How this service works
High-speed API suite for AI processing, web scraping, and smart data utilities across 57+ blockchain networks. Pay-per-call via x402.
Output
Returns token balance data for the specified wallet address across the requested ERC-20 contract addresses on the Ink blockchain network, including balance amounts per contract.
Example use cases
DeFi portfolio snapshot on Ink
“Pull the current token balances for my wallet 0xABCDEF1234567890abcdef1234567890abcdef12 on the Ink network for these contract addresses: 0xContract1... and 0xContract2... so I can see my DeFi holdings.”
Verify token receipt after transfer
“I just sent some tokens on Ink — can you check the balance of wallet 0x1234567890abcdef1234567890abcdef12345678 for contract 0xTokenContractAddress... to confirm the transfer went through?”
Monitor whale wallet token holdings
“Look up the token balances for wallet address 0xWhalWalletAddress1234567890abcdef1234567 on the Ink blockchain across these three token contracts: 0xContractA, 0xContractB, 0xContractC — I want to track what they're holding.”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/ink/token/balancesWhen to prefer
Choose this endpoint when you need token balance data specifically on the Ink blockchain network and want a pay-per-call model without API key subscription overhead. Best for agents that need ad-hoc, low-frequency wallet balance lookups on Ink rather than continuous indexing solutions.
Side effects
- Invalid or malformed wallet address returns an error or empty result
- Invalid contract address returns zero balance or error
- Ink network downtime or RPC failure causes timeout or 5xx error
- Payment not fulfilled (402) if x402 micropayment not included
- Empty contractAddresses array may return no results
- Rate limiting if called too frequently without payment
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| owner | string | |
| contractAddresses | array |
Tags
x402
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