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BNB Chain Token Balance Lookup
x402
BNB Chain 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 2026-09-14).
Returns token balances for a given wallet address across specified BEP-20 contract addresses on BNB Chain
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 a list of token balances for the specified owner wallet across the given BEP-20 contract addresses on BNB Chain, including token amounts per contract.
Example use cases
DeFi portfolio balance audit
“Show me the token balances for wallet 0x1234abcd on BNB Chain for these three contracts: 0xPancake, 0xCake, and 0xBNBToken — I want to know exactly how much of each token this address holds.”
Whale wallet token monitoring
“Check the BEP-20 token balances on BNB Chain for address 0xWhale999 across contract addresses 0xUSDT_BSC and 0xBUSD — I'm tracking large holder positions.”
User onboarding token verification
“Look up whether wallet address 0xUserABC on BNB Chain has any balance in our platform token at contract 0xMyToken so I can verify they're eligible for the airdrop.”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/bnb/token/balancesWhen to prefer
Use this endpoint when you need to look up BEP-20 token balances on BNB Chain (BSC) for a specific wallet across one or more token contracts. Prefer this over generic blockchain explorers when you need programmatic, pay-per-call access without API key management, or when building automated DeFi portfolio tools that pay via x402/USDC.
Side effects
- Invalid or malformed wallet address returns error
- Non-existent or invalid contract address may return zero balance or error
- Missing required 'owner' field causes validation error
- Rate limiting or payment failure via x402 protocol returns 402 status
- Network or RPC issues on BNB Chain may cause timeout or unavailability
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| owner | string | |
| contractAddresses | array |
Tags
x402
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