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Synapse API — Avalanche Token Balances
x402
Synapse API — Avalanche 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 2026-10-31).
Retrieves ERC-20 and native token balances for a given wallet address on the Avalanche 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 a list of token balances associated with the specified owner wallet address on the Avalanche network, including per-contract token amounts and potentially token metadata such as symbol and decimals for each contract address provided.
Example use cases
DeFi portfolio tracker for Avalanche
“Can you pull up all the token balances for my Avalanche wallet 0xAbCd1234... including USDC and WAVAX contracts so I can see my full portfolio?”
Check if wallet holds specific token
“Does the Avalanche address 0xDeAdBeEf... hold any of the token at contract 0xJoeToken123...? I want to verify before sending a transaction.”
On-chain audit of token holdings
“Give me a full breakdown of every token balance held by Avalanche address 0xAudit9999... across these five contract addresses for my compliance report.”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/avalanche/token/balances?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you specifically need token balance data on the Avalanche (AVAX) network and want a pay-per-call model without API key subscription overhead. Prefer this over general multi-chain APIs when Avalanche is the target chain and you need quick, lightweight balance lookups rather than full transaction history.
Side effects
- Invalid owner address format returns an error or empty result
- Unknown or invalid contract address returns zero balance or error
- Rate limiting or network timeouts if Avalanche RPC is slow
- Empty response if wallet holds none of the specified tokens
- Payment failure via x402 if USDC balance is insufficient
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| owner | string | |
| contractAddresses | array |
Tags
x402
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