# Synapse API — Hyperliquid RPC Proxy

> Synapse API — Hyperliquid RPC Proxy 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).

Proxies JSON-RPC method calls to the Hyperliquid decentralized exchange and perpetuals protocol, returning on-chain data and state via a pay-per-call gateway.

## Facts

- Endpoint: POST https://synapse-api-brown.vercel.app/api/hyperliquid/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-hyperliquid-rpc-proxy-b46f9adf
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6TvsVgT8ZfO3HxcXC_TBY

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-hyperliquid-rpc-proxy-b46f9adf -d '<json body>'
```

Example prompt: Can you call the Hyperliquid RPC with method 'allMids' and no params to get the current mid prices for all perpetual assets?

## When to prefer this

Choose this endpoint when you need programmatic access to Hyperliquid perpetuals DEX data (market prices, positions, orders, funding rates) without running your own Hyperliquid node, and you want pay-per-call micropayment billing via x402 USDC rather than a subscription API key.

## Known failure modes

- Invalid or unsupported RPC method name returns an error response
- Malformed params array causes a parsing error
- Payment not attached results in HTTP 402 response requiring x402 payment
- Hyperliquid node unavailable causes upstream timeout or 503
- Rate limiting if call volume exceeds gateway thresholds

## 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 JSON-RPC response from the Hyperliquid protocol containing the requested on-chain data — such as market prices, order book snapshots, account positions, funding rates, or asset metadata — depending on the method called.

## 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-hyperliquid-rpc-proxy-b46f9adf/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)