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Phantom API – SEI Token Balances
x402
Phantom API – SEI 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).
Returns token balances for a given wallet address on the SEI blockchain, optionally filtered by specific contract addresses.
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
A list of token balances associated with the specified SEI wallet address, including token identifiers and amounts held. If contract addresses are provided, results are filtered to only those tokens.
Example use cases
DeFi portfolio snapshot for SEI wallet
“Can you pull all the token balances for my SEI wallet sei1qwertyuiop1234567890 so I can see what I'm holding on-chain?”
Check specific token holdings before a trade
“Before I swap, check if the SEI wallet sei1abcdef123456 holds any of these tokens: contract 0xAAA111 and contract 0xBBB222 — and how much of each.”
Monitor user wallet for token presence
“I need to verify whether the SEI address sei1xyz987654321 has a non-zero balance for the token at contract 0xDEF456 — can you check that on-chain?”
Technical details
Endpoint
POSThttps://phantom-api-omega.vercel.app/api/sei/token/balances?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need fast, pay-per-call on-chain token balance lookups specifically on the SEI blockchain. Prefer this over general-purpose RPC calls when you want a simple JSON interface without setting up your own node, and when spot-checking balances for one or a handful of contract addresses at a time.
Side effects
- Invalid or malformed SEI wallet address returns an error or empty result
- Unknown or non-existent contract address returns zero balance or error
- Network congestion or RPC node downtime causes timeout
- Payment failure via x402 protocol blocks the request
- Empty array returned 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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