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Phantom API — Monad Transaction History
x402
Phantom API — Monad 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 2026-09-14).
Retrieves paginated transaction history for addresses on the Monad blockchain network, with filtering by block range, category, and address.
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 paginated list of transactions on the Monad network matching the query filters, optionally including metadata such as token transfers, block timestamps, and value details. Returns a pageKey for fetching subsequent pages when more results exist.
Example use cases
Wallet activity audit for compliance
“Get me all incoming and outgoing transactions for Monad wallet 0xDEF456... from block 50000 to block 150000, sorted oldest to newest, and include full metadata so I can audit the activity.”
DeFi portfolio transaction tracker
“Fetch the 50 most recent transactions involving my Monad address 0x789GHI..., skip any zero-value transfers, and give them to me in descending order so I can see my latest DeFi activity.”
Smart contract interaction history
“Show me all transactions sent to the Monad contract at 0xCONTRACT... — filter for only the 'external' and 'erc20' categories, max 100 results, and page through using the key 'page_xyz' if there are more.”
Technical details
Endpoint
POSThttps://phantom-api-omega.vercel.app/api/monad/tx/historyWhen to prefer
Use this endpoint when you need historical transaction data specifically on the Monad blockchain network. Prefer it when you need paginated, filterable access to on-chain activity including block-range filtering, address-specific queries, and category-based filtering. It is pay-per-call with no subscription required, making it cost-effective for sporadic lookups.
Side effects
- Invalid address format returns a 400 error
- fromBlock greater than toBlock results in empty or error response
- Unsupported category enum value causes validation error
- Exceeding maxCount limits may result in truncated or error response
- Missing required address fields may return empty result set
- Payment failure via x402 protocol blocks access with 402 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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