# Synapse API — Abstract Token Transfers

> Synapse API — Abstract 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 2026-09-15).

Retrieves token transfer history for a given wallet owner address across Abstract blockchain, with optional filtering by block range, contract addresses, and pagination.

## Facts

- Endpoint: POST https://synapse-api-brown.vercel.app/api/abstract/token/transfers
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synapse-api-abstract-token-transfers-73f36489
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_yc3mbeC2rZDxO_uRzz89w

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability synapse-api-abstract-token-transfers-73f36489 -d '<json body>'
```

Example prompt: Pull all token transfers for wallet 0xAbC1234...5678 on the Abstract network from block 1000000 to 1050000, sorted descending, and limit results to 100.

## When to prefer this

Use this endpoint when you need on-chain token transfer history specifically for the Abstract network (an EVM-compatible Layer 2). It is ideal for wallet auditing, DeFi analytics, compliance checks, or portfolio reconciliation where you need block-level filtering and contract-level filtering with pagination support. Prefer this over generic Ethereum or EVM explorers when your target chain is Abstract.

## Known failure modes

- Invalid owner address format returns an error or empty result
- fromBlock/toBlock out of range or malformed block identifiers cause query failure
- Invalid pageKey on pagination causes missing or repeated results
- No transfers found for the given filters returns an empty list
- Rate limiting or payment failure (x402) blocks the request
- Unsupported contractAddresses format causes filtering to fail

## 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 on the Abstract network. Each record typically includes sender, recipient, token contract address, amount, block number, and transaction hash. A pageKey is returned when more results are available for subsequent calls.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "order": {
   "enum": [
    "asc",
    "desc"
   ],
   "type": "string"
  },
  "owner": {
   "type": "string"
  },
  "pageKey": {
   "type": "string"
  },
  "toBlock": {
   "type": "string"
  },
  "maxCount": {
   "type": "number"
  },
  "fromBlock": {
   "type": "string"
  },
  "contractAddresses": {
   "type": "array",
   "items": {
    "type": "string"
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synapse-api-abstract-token-transfers-73f36489/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from synapse-api-brown.vercel.app](https://www.zero.xyz/host/synapse-api-brown.vercel.app/llms.txt)