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Synapse API — Katana Token Transfers
x402
Synapse API — Katana Token Transfers is a paid API for AI agents from synapse-api-brown.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-29).
Retrieves token transfer history for a wallet or contract address on Katana (blockchain), with filtering by block range, contract, and pagination.
Price / call$0.01
Success—
StatusUnknown
How this service works
High-speed API suite for AI processing, web scraping, and smart data utilities across 57+ blockchain networks. Pay-per-call via x402.
Output
A list of token transfer events for the specified wallet/contract, including sender, recipient, token amount, contract address, block number, and transaction hash, along with a pagination key for fetching the next page of results.
Example use cases
Wallet token activity audit
“Show me all token transfers for wallet 0xAbc123... on Katana from block 1000000 to 1050000, sorted oldest first, up to 200 results.”
DeFi portfolio transfer tracking
“Fetch all incoming and outgoing transfers for 0xUserWallet... on Katana for just the WETH contract at 0xWETH..., most recent first, limit 50.”
Contract token flow analysis
“Get all token movements involving the contract 0xToken... on Katana from block 2000000 onward, paginated — start from the beginning, ascending order, max 100 per page.”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/katana/token/transfers?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need on-chain token transfer history specifically on the Katana blockchain network and want block-range filtering, contract-address filtering, and cursor-based pagination in a single pay-per-call request. Prefer this over generic blockchain explorers when you need programmatic, structured output for agent workflows rather than human-readable UI.
Side effects
- Invalid owner address format returns validation error
- Unknown or unsupported contract address returns empty results
- Invalid block range (fromBlock > toBlock) returns error
- Missing required owner field causes request rejection
- Rate limiting or payment failure returns 402 or 429 error
- Invalid pageKey causes pagination failure
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| order | string | |
| owner | string | |
| pageKey | string | |
| toBlock | string | |
| maxCount | number | |
| fromBlock | string | |
| contractAddresses | array |
Tags
x402
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