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"
}