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Phantom API — Optimism RPC Endpoint
x402
Phantom API — Optimism RPC Endpoint 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).
Provides pay-per-call JSON-RPC access to the Optimism (OP Mainnet) blockchain network for reading chain state, querying transactions, and interacting with smart contracts.
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 the result field populated with the requested on-chain data (e.g. hex-encoded balance, block object, transaction receipt, log array) or an error object if the call fails. Response format mirrors the Ethereum JSON-RPC standard.
Example use cases
Check wallet balance on Optimism
“What's the ETH balance of address 0x1234...abcd on Optimism right now? Use eth_getBalance to look it up.”
Read smart contract state on OP Mainnet
“Call the totalSupply function on the USDC contract at 0xA0b8...eB48 on Optimism — I need to know the current circulating supply.”
Fetch latest Optimism block details
“Get me the details of the latest block on the Optimism chain — block number, timestamp, and transaction count — using eth_getBlockByNumber.”
Technical details
Endpoint
POSThttps://phantom-api-omega.vercel.app/api/optimism/rpc?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need direct, low-latency JSON-RPC access to the Optimism (OP Mainnet) L2 blockchain and want pay-per-call pricing without a subscription. Ideal for agents that make sporadic or unpredictable numbers of RPC calls and want to avoid over-provisioning. Prefer this over self-hosted nodes when you need zero infrastructure overhead and over subscription RPC providers when usage is too low to justify a monthly plan.
Side effects
- Invalid RPC method name returns JSON-RPC error code -32601 (method not found)
- Malformed params array returns error code -32602 (invalid params)
- Network congestion or node unavailability may cause timeouts
- Payment failure via x402 protocol blocks the request before it reaches the node
- Querying a non-existent block hash or transaction hash returns null result
- Rate limiting if too many calls are made in rapid succession
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| method | string | |
| params | array |
Tags
x402
Reviews
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