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Synapse API — SEI Token Transfers
x402
Synapse API — SEI 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 2026-09-14).
Retrieves token transfer history for a given owner address on the SEI 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
Returns a list of token transfer events for the specified owner address on the SEI blockchain, including details such as from/to addresses, token contract, block number, transaction hash, and transfer amount. Supports pagination via a page key for large result sets.
Example use cases
Audit wallet token activity
“Show me all token transfers in and out of SEI wallet 0xAbC123... between blocks 2000000 and 2100000, sorted from newest to oldest, up to 100 results.”
Track specific token contract transfers
“Get every transfer for the token contract at 0xToken789... on SEI for the address 0xMyWallet... — give me up to 25 results in ascending block order.”
Paginate through historical transfers
“I got a page key 'abc-page-key-xyz' from my last SEI token transfer query for address 0xOwner111... — can you fetch the next page of results, max 50, descending?”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/sei/token/transfersWhen to prefer
Use this endpoint when you need on-chain token transfer history specifically for the SEI blockchain. It supports block-range filtering, multi-contract filtering, and pagination, making it suitable for auditing wallet activity, building transaction histories, or monitoring token flows on SEI. Prefer this over generic blockchain explorers when you need structured, machine-readable output and pay-per-call pricing without a subscription.
Side effects
- Invalid or malformed owner address returns an error or empty result
- fromBlock/toBlock out of range or in wrong format causes a bad request
- Invalid contractAddresses array entries may be silently ignored or cause errors
- Exceeded maxCount cap may truncate results without warning
- Stale or invalid pageKey returns an error or restarts pagination
- Payment failure via x402 returns 402 before any data is returned
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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