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Synapse API — Bob Token Transfers
x402
Synapse API — Bob 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 2026-09-13).
Retrieves token transfer history for a given wallet address (owner) across blockchain networks, with filtering by block range, contract addresses, and pagination support.
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 paginated list of token transfer events for the specified owner address, including transfer details such as token contract address, sender, recipient, amount, block number, and transaction hash. A pageKey is included when more results are available for subsequent calls.
Example use cases
Audit wallet token activity
“Pull all token transfers for my wallet 0xDeAdBeEf...1234 in descending order from block 17500000 to block 18500000 — I want to review everything that moved in and out during that period.”
Track specific ERC-20 transfers
“Get me all USDC transfers (contract 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48) involving the address 0xAbcdef...7890, sorted ascending by block, max 100 results.”
Paginate large transfer history
“I already fetched the first page of token transfers for 0x1234...abcd — here's my pageKey from the last call, please get me the next batch of up to 25 transfers in descending order.”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/bob/token/transfersWhen to prefer
Use this endpoint when you need to retrieve on-chain token transfer history for a specific wallet address with fine-grained control over block range, contract filtering, sort order, and pagination. Prefer it over generic blockchain explorers when you need programmatic, pay-per-call access without API key registration, or when working within an x402-compatible agent workflow that handles micropayments automatically.
Side effects
- Invalid or malformed owner address returns an error
- Unknown or unsupported contract addresses may return empty results
- Invalid block numbers (toBlock less than fromBlock) may cause errors
- Missing required owner field results in a 400 bad request
- Payment not included or insufficient USDC causes 402 payment required
- pageKey from a different query context may cause pagination errors
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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