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Synapse API — Kaia Token Balances
x402
Synapse API — Kaia Token Balances 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 on the Kaia blockchain, optionally filtered by specific contract addresses
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 associated with the specified owner wallet on the Kaia blockchain. Each entry typically includes the contract address, token symbol or name, and the balance amount. If specific contract addresses are provided, only those tokens' balances are returned.
Example use cases
DeFi portfolio snapshot on Kaia
“Can you pull all the token balances for my Kaia wallet 0x4a2b...9f1c so I can see my current DeFi holdings?”
Verify specific token receipt
“I just received a KLAY-wrapped USDC transfer on Kaia — can you confirm that wallet 0x7f3e...2a8b actually shows a balance for contract 0xUSDC...c0de?”
Multi-wallet token audit
“I need to audit the token positions of this Kaia address 0x1d9f...44bc — check balances for these three contracts: 0xAAA..., 0xBBB..., and 0xCCC...”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/kaia/token/balancesWhen to prefer
Choose this endpoint when you specifically need token balance data on the Kaia blockchain (formerly Klaytn). It supports multi-token lookups in a single call via the contractAddresses array, making it efficient for portfolio snapshots. Prefer this over generic EVM balance APIs when the target network is Kaia and you need ERC-20/KIP-7 token-level granularity rather than just native coin balances.
Side effects
- Invalid or malformed owner wallet address — returns error or empty result
- Contract address array contains invalid addresses — partial or no results returned
- Kaia network node unavailable — service timeout or 503 error
- Owner address has no token holdings — returns empty balance list
- Upstream RPC rate-limited — may return 429 or degraded response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| owner | string | |
| contractAddresses | array |
Tags
x402
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