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Ankr WebSockets are available through Uniblock with a validation endpoint and a matching WSS endpoint.

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Endpoints

  • WebSocket (WSS): wss://websocket.uniblock.dev/ankr?chainId=1
  • HTTP (Validation): https://websocket.uniblock.dev/ankr/validate?chainId=1

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Required parameters

  • chainId is required.
  • Include the X-API-KEY header in both validation and connection requests.

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Workflow

  1. Validate the request with the HTTP endpoint.
  2. Connect to the WSS endpoint using the same chainId.
  3. Send your Ankr WebSocket subscription message.

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Example validation request

curl --request GET \
  --url 'https://websocket.uniblock.dev/ankr/validate?chainId=1' \
  --header 'X-API-KEY: YOUR_UNIBLOCK_API_KEY'

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Pricing

Ankr WebSocket usage is billed per active subscription and per notification received, split by EVM and non-EVM chains:
  • Subscription (EVM): 416.67 CUs
  • Subscription (Non-EVM): 166.67 CUs
  • Notification (EVM): 83.33 CUs
  • Notification (Non-EVM): 416.67 CUs
See Usage & Limits for the full CU cost table.

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