Ethereum RPC
Relay

Validated Ethereum acceleration and failover for latency-sensitive applications.

⚡ 4.39ms warm local p95 in our published benchmark
● Checking network status…

Get your API key

Confirm a one-time signup code to create a free token

Free

$0

Get started instantly with a free API key.

  • • 50 calls/minute
  • • Shared cached Ethereum reads
  • • Instant failover
  • • Never expires

Pro

$49 USDC
⚡ Validated local accelerator included
  • • 300 calls per 10 seconds
  • • 4.39ms warm local p95 benchmark
  • • Priority failover
  • • WebSocket support

How to Use Your Token

Endpoint: https://rpc-cache-worker.rpc-relay-cache.workers.dev/api/v1/rpc

cURL

curl https://rpc-cache-worker.rpc-relay-cache.workers.dev/api/v1/rpc \
  -H "Authorization: Bearer ***" \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"eth_blockNumber","params":[]}'

JavaScript

fetch('https://rpc-cache-worker.rpc-relay-cache.workers.dev/api/v1/rpc', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer YOUR_TOKEN',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    jsonrpc: '2.0',
    id: 1,
    method: 'eth_blockNumber',
    params: []
  })
})

Python

import requests
response = requests.post(
    'https://rpc-cache-worker.rpc-relay-cache.workers.dev/api/v1/rpc',
    headers={'Authorization': 'Bearer YOUR_TOKEN'},
    json={'jsonrpc': '2.0', 'id': 1, 'method': 'eth_blockNumber', 'params': []}
)
print(response.json())
Authentication
Authorization: Bearer YOUR_TOKEN

Pro low-latency setup

Run the local accelerator beside your bot. Warm reads stay on your machine; misses use one persistent authenticated WebSocket.

Download CLI installer 
curl -fsSL https://rpc-relay.pages.dev/install.sh | sh
rpc-relay-pro setup
# Point your Ethereum client to http://127.0.0.1:8545
Warm serial p95
4.39 ms
Validated responses
100%
Concurrent p95 (16)
14.54 ms

Published measurements are workload-specific, not a guarantee. Cold cache misses include network and upstream latency.