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Prerequisites

Using any of the GoldRush developer tools requires an API key. If you already have a GoldRush key for any other GoldRush product (Foundational, Streaming, Pipeline, Hyperliquid, x402), you can use it as-is - JSON-RPC uses the same key.

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1. Export your API key

export GOLDRUSH_API_KEY="cqt_..."
Never commit your API key to source control. Use environment variables or a secrets manager.

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2. Pick a chain

The endpoint shape is: 
https://rpc.goldrushdata.com/v1/{chain}
Replace {chain} with one of the supported chain slugs. For Ethereum mainnet, that’s eth-mainnet; for Solana, that’s solana-mainnet.

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3. Make a request

The examples below target an EVM chain. For Solana, jump to step 3 (Solana). 
curl https://rpc.goldrushdata.com/v1/eth-mainnet \
  -H "Authorization: Bearer $GOLDRUSH_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "eth_blockNumber",
    "params": []
  }'

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3. Make a request (Solana)

On Solana, the same endpoint shape and header auth apply; only the methods change. Here’s a getSlot call (the Solana equivalent of eth_blockNumber): 
curl https://rpc.goldrushdata.com/v1/solana-mainnet \
  -H "Authorization: Bearer $GOLDRUSH_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "getSlot",
    "params": [{ "commitment": "finalized" }]
  }'
New to Solana RPC? See Solana concepts for commitment levels, slots vs blocks, lamports, and encodings.

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4. Where to next

Authentication details

Header reference, error codes, key rotation tips.

Method reference

Every method with parameters, returns, and code examples per chain. See the Solana method reference for Solana.

Endpoint details

Archive, debug_*, trace_*, SLA.

Migration guides

Coming from Infura, Alchemy, or Ankr.