Hermod RPC

A fast, multi-chain JSON-RPC gateway. Sign up, grab an api key, start sending calls in minutes.

Hermod RPC is a JSON-RPC gateway with built-in caching, automatic failover, and per-key rate limits. Point your client at our endpoint, drop in an api key, and you are live.

Start here

Getting started

Signup, mint a key, send your first call. Five minutes start to finish.

Authentication

Three ways to attach an api key: URL path, header, or query parameter. Pick whichever your client likes most.

Chains

The live list of supported chains, their slugs, and the discovery endpoint you can poll from CI.

Billing

Plans, compute-unit pricing, top-ups, and where to watch your spend.

30-second quickstart

curl https://infra.originstake.com/pharos/evm \
  -H "X-OriginRPC-Token: originrpc_live_YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"eth_blockNumber","params":[]}'

Don't have a key yet? Mint one in the dashboard or follow the step-by-step guide.

What you get

WebSocket subscriptions

Subscribe to new heads, logs, and pending txs on any chain that advertises WebSocket support.

Per-key rate limits

Each plan has a clear RPS budget per key, with brief bursts absorbed by hot-path cache and token-bucket smoothing.

Predictable errors

Two error vocabularies (HTTP and JSON-RPC) cleanly separated, with retry guidance for each status code.

Endpoint reference

Base URL, path layout, timeouts, compression, and what we handle on your behalf vs what you handle.