# Synapse API — Mantle Transaction History

> Synapse API — Mantle 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 2026-09-15).

Fetches paginated transaction history for addresses on the Mantle blockchain network

## Facts

- Endpoint: POST https://synapse-api-brown.vercel.app/api/mantle/tx/history
- 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-mantle-transaction-history-fdff2884
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_nop9hLSP1oT1qg68XQit_

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-mantle-transaction-history-fdff2884 -d '<json body>'
```

Example prompt: Pull the last 25 transactions for Mantle address 0xABC123... in descending order, include metadata, and skip any zero-value transfers.

## When to prefer this

Choose this endpoint when you need on-chain transaction history specifically for the Mantle L2 network. It supports filtering by address, block range, transaction category, and value, with pagination support for large result sets. Prefer this over generic Ethereum RPC calls when you need structured, enriched transaction data on Mantle without running your own node.

## Known failure modes

- Invalid address format returns a 400 or error response
- Unknown or malformed pageKey causes pagination failure
- fromBlock greater than toBlock returns empty results or error
- Requesting unsupported category types may return empty or error
- Rate limiting or payment failure (x402) blocks the request
- Very large block ranges may time out or return truncated results

## 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 transactions on the Mantle blockchain matching the specified filters. Each transaction record includes details such as transaction hash, block number, from/to addresses, value, and optionally extended metadata like asset details, category, and timestamps. A pageKey may be returned for fetching subsequent pages.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "order": {
   "enum": [
    "asc",
    "desc"
   ],
   "type": "string"
  },
  "pageKey": {
   "type": "string"
  },
  "toBlock": {
   "type": "string"
  },
  "category": {
   "type": "array",
   "items": {
    "type": "string"
   }
  },
  "maxCount": {
   "type": "number"
  },
  "fromBlock": {
   "type": "string"
  },
  "toAddress": {
   "type": "string"
  },
  "fromAddress": {
   "type": "string"
  },
  "withMetadata": {
   "type": "boolean"
  },
  "excludeZeroValue": {
   "type": "boolean"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synapse-api-mantle-transaction-history-fdff2884/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)