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Synapse API — Worldchain Token Balances
x402
Synapse API — Worldchain 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 2026-09-15).
Fetches ERC-20 token balances for a given wallet address on the Worldchain 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 for the specified wallet address on Worldchain, keyed by ERC-20 contract address, including balance amounts (typically as raw BigInt or formatted values per token).
Example use cases
Portfolio audit for a Worldchain wallet
“Can you check the balances of all these ERC-20 tokens — 0xToken1, 0xToken2, 0xToken3 — for my Worldchain wallet 0xMyWallet123 so I can see what I'm holding?”
DeFi app balance verification
“Before I trigger the swap, can you verify what balances wallet 0xUserWallet holds for contract addresses 0xTokenA and 0xTokenB on Worldchain?”
Multi-token treasury snapshot
“I need a snapshot of the token balances across these five contract addresses for our treasury wallet 0xTreasury456 on Worldchain — can you pull that for me?”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/worldchain/token/balancesWhen to prefer
Choose this endpoint when you need to retrieve ERC-20 token balances specifically on the Worldchain network, especially for multiple token contracts at once. It is preferable when you already have a list of contract addresses and a target wallet, and need a fast, pay-per-call lookup without setting up your own RPC node. Best suited for agents or apps integrating Worldchain portfolio data without managing blockchain infrastructure.
Side effects
- Invalid or malformed wallet address returns an error or empty result
- Non-existent or invalid contract addresses may return zero balances or an error
- Network unavailability or Worldchain RPC issues may cause timeouts
- Payment failure via x402 results in 402 response and no data returned
- Empty contractAddresses array may return no results or an error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| owner | string | |
| contractAddresses | array |
Tags
x402
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