# Synapse API — MegaETH RPC Endpoint

> Synapse API — MegaETH RPC Endpoint 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 2026-10-24).

Proxies JSON-RPC calls to the MegaETH blockchain network, enabling agents to read chain state, submit transactions, and interact with smart contracts on MegaETH.

## Facts

- Endpoint: POST https://synapse-api-brown.vercel.app/api/megaeth/rpc?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-24
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synapse-api-megaeth-rpc-endpoint-524aa33d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_mnR8VN336FtqujchAO2qw

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-megaeth-rpc-endpoint-524aa33d -d '<json body>'
```

Example prompt: Can you call eth_getBalance on the MegaETH network for address 0xAbC...123 and tell me how much ETH is in that wallet?

## When to prefer this

Choose this endpoint when you specifically need to interact with the MegaETH blockchain network via standard JSON-RPC methods and want pay-per-call pricing via x402 protocol without managing your own RPC node infrastructure. Best suited for agents that need occasional MegaETH chain reads or writes without committing to a monthly RPC subscription.

## Known failure modes

- Invalid JSON-RPC method name returns error code -32601 method not found
- Malformed params array causes -32602 invalid params error
- Network congestion or MegaETH node unavailability returns 503 or timeout
- Payment failure via x402 protocol blocks request before it reaches the RPC
- State-mutating calls (eth_sendRawTransaction) may fail if gas is insufficient

## 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 standard JSON-RPC response object with a result field containing the blockchain data requested (e.g. balance in hex wei, block object, transaction receipt) or an error object if the call failed.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "method": {
   "type": "string"
  },
  "params": {
   "type": "array",
   "items": {}
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synapse-api-megaeth-rpc-endpoint-524aa33d/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)