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Phantom API — Ethereum Transaction History
x402
Phantom API — Ethereum 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 2026-10-20).
Retrieves paginated Ethereum transaction history for a given address or address pair, filterable by block range, category, and metadata options
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 Ethereum asset transfers and transactions matching the query, each including transaction hash, block number, from/to addresses, value, asset type, and optionally full metadata. Also returns a pageKey for cursor-based pagination through large result sets.
Example use cases
Wallet audit for tax reporting
“Get me a full descending history of all Ethereum transactions for address 0xAb5801a7D398351b8bE11C439e05C5B3259aeC9b from block 18000000 to 19000000, with metadata included, skipping zero-value transfers — I need to review everything for tax purposes.”
Monitor incoming transfers to a treasury
“Fetch all incoming transactions to our treasury wallet 0x1234567890abcdef1234567890abcdef12345678 on Ethereum, sorted ascending from block 17500000, including ERC-20 and internal transfers, with up to 50 results per page.”
Trace token flow between two addresses
“Show me all Ethereum transactions from address 0xSenderAddress to 0xReceiverAddress, filtering for ERC-20 token transfers only, sorted oldest to newest, with full metadata so I can trace the token flow.”
Technical details
Endpoint
POSThttps://phantom-api-omega.vercel.app/api/ethereum/tx/history?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need historical Ethereum transaction data with flexible filtering by address, block range, and asset category. It is well-suited for wallet auditing, portfolio analytics, tax reporting, and tracing on-chain fund flows. Prefer it over general block explorers when you need structured, machine-readable paginated output with metadata in a pay-per-call model without rate-limit subscription commitments.
Side effects
- Invalid Ethereum address format returns a 400 error
- fromBlock greater than toBlock returns an empty result or error
- Invalid category values may return an error or be silently ignored
- Expired or invalid pageKey causes pagination to fail
- maxCount exceeding API limits may be capped or rejected
- Network errors or Vercel cold starts may cause timeouts
- Payment failure via x402 protocol blocks the request
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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