API Keys & Applications

API keys are used to authenticate your requests to BlockReq’s RPC endpoints. Each endpoint you create comes with its own API key.

Getting Your API Key

From the Dashboard

1. Sign in to BlockReq Dashboard
2. Go to Settings in the left sidebar
3. Your API keys are listed under the API Keys section
4. Click the copy icon to copy any key

From an Endpoint

Each endpoint displays its API key, HTTPS URL, and WSS URL. Navigate to Endpoints to view all your endpoints.

Creating an Application (Endpoint)

An endpoint is your gateway to a specific blockchain network. To create one:

1. Go to Endpoints
2. Click + Add Endpoint
3. Select a blockchain network
4. (Optional) Give it a descriptive name
5. Your endpoint is ready — copy the RPC URL and start building

See Create Your First Endpoint for a detailed walkthrough with code examples.

Using Your API Key

Replace YOUR_API_KEY in the endpoint URL:

HTTPS: https://eth-mainnet.blockreq.com/v1/rpc/YOUR_API_KEY
WSS:   wss://eth-mainnet.blockreq.com/v1/ws/YOUR_API_KEY

Quick Example

curl -X POST https://eth-mainnet.blockreq.com/v1/rpc/YOUR_API_KEY \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'

Programmatic Management

You can also manage endpoints via the BlockReq API:

Method	Description
blockreq_supportedNetworks	List available blockchains
blockreq_createEndpoint	Create a new endpoint
blockreq_listEndpoints	List all your endpoints
blockreq_deleteEndpoint	Delete an endpoint

Security Best Practices

• Never expose API keys in client-side code — use a backend proxy
• Rotate keys by creating a new endpoint and updating your configuration
• Use separate endpoints for development, staging, and production
• Monitor usage on the Dashboard to detect unusual activity