Environment Variables

Read environment variables exposed to the sandbox via the run config.

src/index.ts

import type { ExportedHandler } from "kyushu-types";

export default {
  async fetch() {
    const apiKey = process.env.API_KEY ?? "not set";

    return {
      status: 200,
      headers: { "content-type": "application/json" },
      body: JSON.stringify({ API_KEY: apiKey }),
    };
  },
} satisfies ExportedHandler;

Config

By default, the sandbox has no access to the host environment. Explicitly expose variables to make them available to your worker.

kyushu.toml

[[worker.env]]
key = "API_KEY"
value = "secret"

Note

Only variables explicitly listed in the config are available inside the sandbox. The worker cannot access the host environment otherwise.

Try it

Start the development server.

kyu dev kyushu.toml

Then send a request to test it.

curl http://localhost:5987