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Phantom API — Optimism Transaction History
x402
Phantom API — Optimism Transaction History 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 2026-09-13).
Retrieves historical transactions on the Optimism (OP Mainnet) blockchain for a given address or block range, with filtering and pagination support.
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 paginated list of transactions on the Optimism network matching the specified filters, including transaction hashes, block numbers, asset categories, sender/receiver addresses, values, and optional metadata. A pageKey is provided when more results are available.
Example use cases
Wallet activity audit for compliance
“Get me the full transaction history for Optimism address 0xDe...789 between block 100000 and block 200000, including metadata, so I can audit its on-chain activity.”
DeFi portfolio tracker update
“Fetch the 50 most recent ERC-20 transfers sent to my Optimism wallet 0xAb...456, ordered newest first, so I can update my portfolio tracker.”
Smart contract interaction history
“Show me all transactions sent from address 0x11...AAA to smart contract 0x22...BBB on Optimism, starting from the earliest block, excluding zero-value transfers.”
Technical details
Endpoint
POSThttps://phantom-api-omega.vercel.app/api/optimism/tx/historyWhen to prefer
Choose this endpoint when you need historical transaction data specifically on the Optimism (OP Mainnet) L2 network, with flexible filtering by address, block range, category, and value. Prefer it over general Ethereum endpoints when querying Optimism-specific activity, and over block explorers when you need programmatic, paginated, pay-per-call access without rate-limit tiers.
Side effects
- Invalid or malformed address returns an error or empty result
- Unsupported category value causes a validation error
- Block range too large may result in timeout or truncated results
- pageKey expiration leads to pagination errors
- Missing required address fields returns empty or error response
- Payment not processed (x402) results in 402 Payment Required response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| order | string | |
| pageKey | string | |
| toBlock | string | |
| category | array | |
| maxCount | number | |
| fromBlock | string | |
| toAddress | string | |
| fromAddress | string | |
| withMetadata | boolean | |
| excludeZeroValue | boolean |
Tags
x402
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