Hono

import { Hono } from "hono";

const app = new Hono();

app.get("/api/health", (c) => {
  return c.json({ status: "ok" });
});

export default app;

On Cloudflare Workers, use a scheduled handler. On other runtimes, use setInterval or a cron library.

Cloudflare Workers (wrangler.toml)

[triggers]
crons = ["*/5 * * * *"]

src/index.ts

export default {
  fetch: app.fetch,

  async scheduled(event, env, ctx) {
    const checks = {};

    // Database check (D1, Turso, etc.)
    const dbStart = Date.now();
    try {
      await env.DB.prepare("SELECT 1").run();
      checks.database = { status: "ok", latency: Date.now() - dbStart };
    } catch (err) {
      checks.database = { status: "error", latency: Date.now() - dbStart };
    }

    const hasError = Object.values(checks).some((c) => c.status === "error");

    await fetch("https://www.bluemonitor.org/api/v1/heartbeat", {
      method: "POST",
      headers: {
        Authorization: `Bearer ${env.BLUEMONITOR_API_KEY}`,
        "Content-Type": "application/json",
      },
      body: JSON.stringify({
        domain: "yourapp.com",
        status: hasError ? "error" : "ok",
        timestamp: new Date().toISOString(),
        checks,
      }),
    });
  },
};

[![Status](https://www.bluemonitor.org/api/badge/your-domain-com)](https://www.bluemonitor.org/status/your-domain-com)

Track which search engines, AI crawlers, and social bots visit your app. Add bot detection middleware to report visits to BlueMonitor. Requires a Pro plan.

Hono middleware

import { createMiddleware } from "hono/factory";

const BOT_PATTERNS = [
  { pattern: /Googlebot/i, name: "googlebot", category: "search_engine" },
  { pattern: /bingbot/i, name: "bingbot", category: "search_engine" },
  { pattern: /GPTBot/i, name: "gptbot", category: "ai_crawler" },
  { pattern: /ClaudeBot/i, name: "claudebot", category: "ai_crawler" },
  { pattern: /PerplexityBot/i, name: "perplexitybot", category: "ai_crawler" },
  { pattern: /Twitterbot/i, name: "twitterbot", category: "social" },
  { pattern: /facebookexternalhit/i, name: "facebookbot", category: "social" },
  { pattern: /AhrefsBot/i, name: "ahrefsbot", category: "seo" },
];

function identifyBot(ua) {
  for (const bot of BOT_PATTERNS) {
    if (bot.pattern.test(ua)) return bot;
  }
  return null;
}

const botTracking = createMiddleware(async (c, next) => {
  const ua = c.req.header("user-agent") || "";
  const bot = identifyBot(ua);
  if (bot) {
    // Use waitUntil on Workers, await on other runtimes
    const promise = fetch("https://www.bluemonitor.org/api/v1/bot-visits", {
      method: "POST",
      headers: {
        Authorization: `Bearer ${c.env?.BLUEMONITOR_API_KEY}`,
        "Content-Type": "application/json",
      },
      body: JSON.stringify({
        domain: "yourapp.com",
        visits: [{
          bot_name: bot.name,
          bot_category: bot.category,
          path: new URL(c.req.url).pathname,
          user_agent: ua,
        }],
      }),
    }).catch(() => {});
    if (c.executionCtx?.waitUntil) {
      c.executionCtx.waitUntil(promise);
    } else {
      await promise;
    }
  }
  await next();
});

app.use("*", botTracking);

View results in your dashboard under Bot Tracking.