Welcome to the real-time side of Uniblock! Our Websocket integration is currently in Beta, allowing you to stream live blockchain data with minimal latency. We currently support Helius and Alchemy as providers.
The workflow
To ensure a stable and secure connection, we use a two-step handshake process. This allows our workers to pre-validate your credentials and parameters before maintaining a long-lived stateful connection.
Try it out on Postman first.
- Validate: Call the HTTPS
/validate endpoint. This acts as a “pre-flight” check to ensure your request isn’t missing any required headers or parameters.
- Connect: Once validated, open a connection to the WSS endpoint. Note: You must use the exact same headers and
chainId query parameter used in the validation step.
- Message: Send your JSON-RPC subscription message to start receiving data.
Provider details
Helius
Focused on Solana ecosystem performance.
Chains: solana, solana-devnet
Enhanced (Parsed Data)
- Validate Endpoint:
https://lively-dust-7404.lively-fog-f2d9.workers.dev/helius-enhanced/validate?chainId=${chainId}
- WSS Endpoint:
wss://lively-dust-7404.lively-fog-f2d9.workers.dev/helius-enhanced?chainId=${chainId}
Standard (RPC)
- Validate Endpoint:
https://lively-dust-7404.lively-fog-f2d9.workers.dev/helius-standard/validate?chainId=${chainId}
- WSS Endpoint:
wss://lively-dust-7404.lively-fog-f2d9.workers.dev/helius-standard?chainId=${chainId}
Resources: Enhanced Docs | Retry Policy
Alchemy
Broad multi-chain support (100+ networks including ETH, Base, Polygon).
Chains: 1, 10, 137, 8453, 42161, etc.
- Validate Endpoint:
https://lively-dust-7404.lively-fog-f2d9.workers.dev/alchemy/validate?chainId=${chainId}
- WSS Endpoint:
wss://lively-dust-7404.lively-fog-f2d9.workers.dev/alchemy?chainId=${chainId}
Resources: Subscription API | Best Practices
Usage & limits
Compute Unit (CU) costs
| Provider | Activity | CU Cost |
|---|
| Alchemy | Data Transfer | 8,000 CUs per 0.1 MB |
| Helius | Connection Setup | 50 CUs |
| Helius | Data (Enhanced) | 150 CUs per 0.1 MB |
Connection limits
Concurrent connection limits are based on your subscription tier:
- Startup: 1
- Growth: 10
- Pro: 20
- Business: 30
