@openstatus/health-resend

Resend probe for @openstatus/health. Sends GET {baseUrl}/domains with your API key as a bearer header, so it proves both that the Resend API answers and that the key is valid — with fetch alone, on every runtime.

deno add jsr:@openstatus/health jsr:@openstatus/health-resend
npm install @openstatus/health @openstatus/health-resend

import { createHealthHandler, readEnv } from "@openstatus/health";
import { resendProbe } from "@openstatus/health-resend";

const apiKey = readEnv("RESEND_API_KEY");

Deno.serve(
  createHealthHandler({
    probes: [
      // the factory validates `apiKey` at construction, so pass a
      // placeholder and let `skip` keep the unconfigured check from running.
      resendProbe({
        apiKey: apiKey || "unconfigured",
        skip: () => !apiKey,
      }),
    ],
  }),
);

apiKey is the re_… key from the Resend dashboard. Listing domains is a read with no side effects — it sends no email and counts against no sending quota — so the probe can run on every health request. baseUrl defaults to https://api.resend.com. Like every probe here, this one never reads the environment itself — pass the values in, and use skip for environments where Resend is not configured.

resendProbe({
  apiKey,
  // optional overrides from the Probe contract
  name: "email",
  critical: true,
  timeoutMs: 2000,
  skip: () => !apiKey,
});

Non-critical by default: email is usually sent after the request completes, so an outage degrades the report instead of taking the service out of rotation. Set critical: true when a request cannot succeed without sending.

About openstatus

openstatus is the open-source uptime monitoring and status page platform. This package is part of @openstatus/health, the /health endpoints behind openstatus's own services, extracted so any JavaScript server can expose one. Point an openstatus monitor at the endpoint and assert on status in the body to be alerted on degraded before it becomes unhealthy.

Source: github.com/openstatusHQ/health. Issues and PRs welcome.

License

MIT