# Synapse API — Berachain Token Transfers

> Synapse API — Berachain 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 specific address or contract on the Berachain network, with pagination and block range filtering.

## Facts

- Endpoint: POST https://synapse-api-brown.vercel.app/api/berachain/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-berachain-token-transfers-2f8a7ebf
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_kwK1-dVz7UkTFjNB_gSKD

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-berachain-token-transfers-2f8a7ebf -d '<json body>'
```

Example prompt: Show me all token transfers for the Berachain wallet address 0xABC123... from block 1000000 to 2000000, sorted in descending order, and limit results to 50.

## When to prefer this

Use this endpoint when you specifically need token transfer history on the Berachain network, with support for filtering by block range, sorting, and pagination. Prefer this over generic blockchain explorers when you need programmatic, pay-per-call access without API key registration, or when integrating Berachain transfer data into an automated agent workflow.

## Known failure modes

- Invalid or malformed owner address returns an error or empty result
- Invalid block range (fromBlock > toBlock) may return an error
- Unsupported contract address format causes a validation error
- Missing required fields (e.g. no owner or contract) may return an empty or error response
- Rate limits or payment failures result in 402 or 429 responses

## 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 records on Berachain including sender, receiver, token contract address, amount, transaction hash, block number, and a pagination key for fetching additional pages.

## 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-berachain-token-transfers-2f8a7ebf/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)