Ethereum RPC
Relay

Validated Ethereum acceleration and failover for latency-sensitive applications.

⚡ 1.19ms Pro local p50 in our institutional benchmark
● Checking network status…

Get your API key

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

Free

$0

Evaluate RPC Relay on the edge before upgrading.

  • • 10 calls/minute
  • • Edge-only Ethereum access
  • • Cached finalized historical reads
  • • ~46ms measured edge latency
  • • Instant failover
  • • Never expires

Pro

$49 USDC
⚡ Validated local accelerator included
  • • 300 calls per 10 seconds
  • • 1.19ms measured local p50
  • • Full-rate MEV scanning
  • • Priority failover
  • • WebSocket support
  • • Zero-network warm reads
  • • Reorg-safe block-versioned cache
  • • Predictive pre-warming

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 proof p50
1.55 ms
Warm proof p95
2.84 ms
Warm network leaks
0 / 300

Production proof on July 21, 2026. Measurements are workload-specific, not a guarantee. Miss padding is traffic-analysis resistance, not cryptographic PIR; cold misses include network and upstream latency. View machine-readable proof →

The v1.2 audit separates accelerator compute from HTTP queueing and validates JSON-RPC results: 10,076 sustained RPS at concurrency 32 with 100% valid responses in the published run. Reproduce it with rpc-relay-pro audit. View audit proof →

MCP-local for agents

Extend your RPC provider to the device: agents get allowlisted read-only Ethereum tools through localhost, while the Pro credential stays outside the MCP conversation.

rpc-relay-pro mcp-config
rpc-relay-pro mcp