# Synapse API — ApeChain RPC Endpoint

> Synapse API — ApeChain 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 2026-10-12).

Provides JSON-RPC access to the ApeChain blockchain network, enabling on-chain queries and transaction submissions via pay-per-call HTTP.

## Facts

- Endpoint: POST https://synapse-api-brown.vercel.app/api/apechain/rpc?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synapse-api-apechain-rpc-endpoint-8f531e97
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_fQIpFNFNWXpGaxUhfDcta

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-apechain-rpc-endpoint-8f531e97 -d '<json body>'
```

Example prompt: Can you check the current ETH balance of wallet address 0xAbC123... on ApeChain using the eth_getBalance RPC method?

## When to prefer this

Choose this endpoint when you need to interact with the ApeChain blockchain specifically — querying balances, reading smart contract state, submitting transactions, or fetching block data on the APE ecosystem chain. Prefer this over generic Ethereum RPC endpoints when ApeChain-specific data or transactions are required, and when pay-per-call pricing via x402 is acceptable.

## Known failure modes

- Invalid JSON-RPC method name returns an error response with code -32601
- Malformed params array causes a parse or invalid params error (-32700 or -32602)
- Network or node unavailability returns a 5xx HTTP error
- Insufficient x402 payment causes a 402 Payment Required response
- Calling non-existent contract address returns empty or zero result without error

## 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

A standard JSON-RPC response object containing a result field with the requested blockchain data (e.g. balance in hex, block object, transaction receipt, call return value) or an error object with code and message if the request 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-apechain-rpc-endpoint-8f531e97/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)