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Phantom API — Token Balances
x402
Phantom API — 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 2026-10-16).
Fetches ERC-20 and other token balances for a given wallet address 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 structured list of token balances for the specified wallet address, including balance amounts for each requested contract address (or all held tokens if no contracts are specified), denominated in the token's native units.
Example use cases
DeFi portfolio snapshot
“Show me all the token balances held by wallet 0x742d35Cc6634C0532925a3b8D4C9D5B6e8D15Abc — I want to see every ERC-20 it holds.”
Multi-wallet treasury audit
“Check the USDC and DAI balances for our treasury wallet 0xDead...Beef so I can see how much stablecoin we have on hand right now.”
Smart contract token monitoring
“For the address 0x1234...5678, pull the current balances for these three token contracts: 0xUNI, 0xLINK, and 0xAAVE — I need to see if any of them dropped below our threshold.”
Technical details
Endpoint
POSThttps://phantom-api-omega.vercel.app/api/stable/token/balances?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need fast, pay-per-call on-chain token balance lookups without committing to a subscription. Ideal for agents that intermittently need wallet token data across many networks (57+) without setting up a dedicated RPC node or indexer. Best when you need specific contract-level token balances for a known wallet address.
Side effects
- Invalid or malformed wallet address returns an error
- Unknown or unsupported contract address may return zero balance or an error
- Network congestion may cause delayed or incomplete data
- Unsupported blockchain network results in an error response
- Payment failure (insufficient USDC) blocks the request via x402 protocol
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| owner | string | |
| contractAddresses | array |
Tags
x402
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