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Quick Start

Get from zero to your first API call in under 2 minutes.

1. Create an account​

Go to dashboard.overblock.io and sign up. Social login is available.

2. Choose an app​

Open the Apps section in the dashboard. Browse available data apps:

  • stream-app - Bitcoin & Ethereum block streaming via gRPC
  • bitcoin-fees-advisor - Bitcoin fee estimation REST + SSE
  • evm-fees-advisor - EVM gas fee estimation REST + SSE

3. Pick a plan​

Each app has a free tier - no credit card required. Select it to get started.

If you need higher limits or traffic volume, paid plans (PAYG or subscription) are available after activation.

4. Copy your token​

After activating the app, go to Tokens inside the app settings. Copy your X-API-Key.

5. Make your first call​

Use the token in the X-API-Key header:

# Example: Bitcoin fee tiers
curl https://api.overblock.io/bitcoin-fees/fees \
  -H "X-API-Key: your-token-here"
{
  "fast": 45,
  "medium": 22,
  "slow": 8,
  "unit": "sat/vB",
  "updatedAt": "2025-01-20T14:30:00Z"
}

Next steps​