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Phantom API — Blockchain RPC Gateway
x402
Phantom API — Blockchain RPC Gateway 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 2026-10-13).
Executes JSON-RPC calls against 57+ blockchain networks, returning on-chain data such as balances, transactions, blocks, and smart contract state
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 standard JSON-RPC response object containing a result field with the on-chain data (balance in wei, block object, transaction receipt, contract return value, etc.) or an error object with code and message if the call fails.
Example use cases
Real-time wallet balance check
“Can you look up the current ETH balance for wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Ethereum mainnet and tell me how much ETH it holds?”
Smart contract state inspection
“Call the balanceOf function on the USDC contract at 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 on Ethereum for wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 — I want to know their USDC balance.”
Transaction confirmation lookup
“Check whether transaction 0x5c504ed432cb51138bcf09aa5e8a410dd4a1e204ef84bfed1be16dfba1b22060 on Ethereum mainnet was successfully confirmed and tell me its block number and gas used.”
Technical details
Endpoint
POSThttps://phantom-api-omega.vercel.app/api/stable/rpc?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need pay-per-call, multi-chain JSON-RPC access without committing to a node provider subscription. It is ideal for agents that query multiple blockchains infrequently and want to pay $0.01 USDC per call via x402 rather than managing API keys or monthly plans. Prefer it over managed providers like Alchemy or Infura when you need lightweight, permissionless on-chain reads across 57+ networks without registration.
Side effects
- Invalid RPC method name returns JSON-RPC error with code -32601
- Malformed params array causes parse or invalid params error
- Unsupported network or chain not available returns error
- Payment not fulfilled (x402) causes 402 Payment Required response
- Rate limiting or node downtime causes timeout or 503
- Invalid contract address or ABI mismatch returns execution revert
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| method | string | |
| params | array |
Tags
x402
Reviews
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