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Synapse API — Bob Wallet Transaction History
x402
Synapse API — Bob Wallet Transaction History 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 paginated transaction history for a blockchain address (Bob wallet) with filtering by block range, category, and address.
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 asset transfers and transactions associated with the queried addresses, including block numbers, transaction hashes, asset categories, token amounts, and optional metadata such as timestamps and token details.
Example use cases
Audit wallet outgoing transfers
“Pull all outgoing transactions from wallet 0x1234...abcd starting from block 18000000 to block 19000000, sorted newest first, and include transaction metadata so I can review them.”
Paginate ERC20 token history
“Fetch the next page of ERC20 token transfers for wallet 0xDEAD...BEEF using pageKey 'abc123', limit to 50 results, and exclude any zero-value transfers.”
Monitor inbound NFT transfers
“Get all incoming NFT transfers to address 0x9876...fedc, filtered by category 'ERC721', in ascending order so I can see the earliest ones first.”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/bob/tx/historyWhen to prefer
Choose this endpoint when you need paginated, filterable blockchain transaction history for a specific wallet address, particularly when you need to sort by block order, filter by asset category (ERC20, ERC721, internal, etc.), or paginate through large result sets. Prefer this over generic block explorers when you need structured JSON output suitable for programmatic processing by an AI agent.
Side effects
- Invalid address format returns a 400 or empty result
- Unknown pageKey causes pagination errors or empty pages
- Invalid block range (fromBlock > toBlock) may return no results or an error
- Unsupported category values may be silently ignored or cause errors
- Rate limit or payment failure returns a 402 payment required 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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