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The Telnyx API binding puts a ready-to-use, authenticated Telnyx client on env. You never handle an API key — the binding injects credentials at the edge and keeps them out of your code, bundle, and logs. 
import { env } from "@telnyx/edge-runtime";

await env.MY_TELNYX.messages.send({
  from: "+13125550100",
  to: "+13125550101",
  text: "Hello from Edge Compute",
});
  • Free-formed name — MY_TELNYX is whatever you set as binding in func.toml. It becomes the property on env.
  • Typed — telnyx-edge types types env.MY_TELNYX as the Telnyx client.
  • One per organization — every function in the org shares it.
Start with the Quick start. The org-level credential behind the binding (bindings create / validate / update) is account-level and rarely touched — see the CLI reference.