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Phantom API — Robinhood Token Balances
x402
Phantom API — Robinhood Token Balances is a paid API for AI agents from phantom-api-omega.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-20).
Fetches token balances for a given wallet owner address, optionally filtered by specific contract addresses, using Robinhood's on-chain data infrastructure.
Price / call$0.01
Success—
StatusUnknown
How this service works
Lightning-fast access to blockchain data, smart contract insights, and Web3 infrastructure across 57+ networks. Pay-per-call via x402.
Output
Returns a list of token balances associated with the specified owner wallet address, including token identifiers and amounts for each held token, optionally scoped to a provided list of contract addresses.
Example use cases
Portfolio snapshot for a DeFi user
“Can you pull all the token balances held by the wallet 0x1234...abcd so I can see their full on-chain portfolio?”
Verify specific token holdings before a trade
“Check whether the wallet 0xDEAD...BEEF holds any USDC (contract 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48) and how much, before I proceed with this trade.”
Monitor whale wallet token composition
“What ERC-20 tokens does the whale wallet 0x742d35Cc...f4C7 currently hold? Filter for these three contract addresses: 0xA0b8..., 0xdAC1..., and 0x6B17....”
Technical details
Endpoint
POSThttps://phantom-api-omega.vercel.app/api/robinhood/token/balances?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need fast, pay-per-call on-chain token balance lookups for a specific wallet without committing to a full node provider subscription. Ideal for agents that need occasional wallet portfolio checks across 57+ networks without maintaining their own blockchain infrastructure. Best when you already have a wallet address and optionally specific contract addresses to check.
Side effects
- Invalid or malformed wallet address returns an error or empty result
- Contract address not found on the target network returns zero or null balance
- Rate limiting or payment failure (x402) if USDC micropayment is not properly handled
- Network not supported returns an error response
- Empty response if wallet holds no tokens matching the filter
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| owner | string | |
| contractAddresses | array |
Tags
x402
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