Skip to main content
Call BlnkInit to create a client. It is synchronous — do not await it.

​
API key

Blnk Core reads the X-Blnk-Key header. The SDK sets it from the first argument to BlnkInit.
API key argumentX-Blnk-Key headerWhen to use
Non-empty stringSent with the key valueProduction, Blnk Cloud, or any secured Core instance
'' (empty string)OmittedLocal development when Core runs without auth
blnk.Hooks and blnk.ApiKeys require the master key (server.secret_key) — a scoped API key returns 403. Do not set X-Blnk-Key manually in your application code. Pass the key to BlnkInit and the SDK adds the header on every request.

​
Next steps

Use Client options to configure timeouts, retries, and logging, then open the method pages for the resource you want to call.