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Synapse API — Robinhood Token Balances
x402
Synapse API — Robinhood 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).
Fetches token balances for a given wallet owner across specified ERC-20 contract addresses, likely via Robinhood or an equivalent blockchain data source.
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 owner across the provided ERC-20 contract addresses, including balance amounts per contract.
Example use cases
DeFi portfolio balance check
“Can you pull the current token balances for my wallet 0x1234...abcd for these contracts: USDC at 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 and DAI at 0x6B175474E89094C44Da98b954EedeAC495271d0F?”
Wallet audit before token transfer
“Before I send tokens, check the balances on wallet 0xDeadBeef...1234 for these two ERC-20 contracts and tell me what's available: 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 and 0xdAC17F958D2ee523a2206206994597C13D831ec7.”
Multi-token holdings snapshot
“Give me a snapshot of the token holdings for address 0xFeed...cafe across these contract addresses: WETH at 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 and LINK at 0x514910771AF9Ca656af840dff83E8264EcF986CA.”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/robinhood/token/balancesWhen to prefer
Use this endpoint when you need on-chain ERC-20 token balance data for a specific wallet across one or more contract addresses, especially when paying per call via x402 is acceptable and you need fast, targeted balance lookups rather than a full portfolio scan.
Side effects
- Invalid owner address format returns an error or empty result
- Unknown or non-ERC-20 contract addresses return zero balances or errors
- Empty contractAddresses array may return no results or an error
- Network or upstream data provider outage causes lookup failure
- Rate limiting or payment failure (x402) results in 402 response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| owner | string | |
| contractAddresses | array |
Tags
x402
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