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Phantom API — Token Balances Lookup
x402
Phantom API — Token Balances Lookup 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 2026-10-12).
Fetches ERC-20 and other token balances for a given wallet address, optionally filtered by specific contract addresses, across 57+ blockchain networks.
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 contract addresses, token amounts, and potentially token symbols/decimals. When specific contract addresses are provided, results are filtered to those tokens only.
Example use cases
DeFi portfolio snapshot for a wallet
“Pull up all the token balances for 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 so I can see what tokens they're holding right now.”
Check specific token holdings before a trade
“Before I execute this swap, check whether wallet 0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B has enough USDC — the contract address is 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48.”
Monitor whale wallet token positions
“Look up the token balances for wallet 0x3f5CE5FBFe3E9af3971dD833D26bA9b5C936f0bE and filter for just these contracts: WETH, DAI, and LINK, so I can track their positions.”
Technical details
Endpoint
POSThttps://phantom-api-omega.vercel.app/api/adi/token/balances?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need fast, pay-per-call on-chain token balance lookups across a wide range of EVM-compatible and other networks without committing to a subscription. It is ideal for AI agents that need spot checks of wallet holdings, portfolio snapshots, or pre-trade balance verification at minimal cost ($0.01 per call). Prefer alternatives like Alchemy or Moralis if you need high-volume batch lookups with predictable monthly pricing.
Side effects
- Invalid or malformed wallet address returns an error
- Unsupported network or chain not among the 57+ covered networks
- No token balances found returns empty array
- Payment failure via x402 protocol blocks the request
- Rate limiting or network congestion causes timeout
- Invalid contract address format in the contractAddresses array
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| owner | string | |
| contractAddresses | array |
Tags
x402
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