--- title: "InstaTunnel (@instatunnel) | Hashnode" description: "InstaTunnel - The Professional ngrok Alternative That's 40% Cheaper. Read the latest articles by InstaTunnel on Hashnode." url: "https://hashnode.com/@instatunnel" --- @instatunnel # InstaTunnel @instatunnel · Joined February 2026 InstaTunnel - The Professional ngrok Alternative That's 40% Cheaper ### [WhatsApp Cloud API Webhooks on Localhost: The Verify-Token Handshake, Retries and App Secret Setup](https://instatunnel.hashnode.dev/whatsapp-cloud-api-webhooks-on-localhost-the-verify-token-handshake-retries-and-app-secret-setup?utm_source=hashnode&utm_medium=feed) Set up WhatsApp Cloud API webhooks on localhost. Handle Meta's hub.challenge verify-token handshake, X-Hub-Signature-256 checks, retries and app 12 min read · [instatunnel.hashnode.dev](https://instatunnel.hashnode.dev/whatsapp-cloud-api-webhooks-on-localhost-the-verify-token-handshake-retries-and-app-secret-setup?utm_source=hashnode&utm_medium=feed) [2h ago](https://hashnode.com/posts/whatsapp-cloud-api-webhooks-on-localhost-the-verify-token-handshake-retries-and-app-secret-setup/6af53472b5b5e8c01981aae6) ### [Chrome 154 Asks Before Loading HTTP: What Changes for Dev, Staging, and Test Automation](https://instatunnel.hashnode.dev/chrome-154-asks-before-loading-http-what-changes-for-dev-staging-and-test-automation?utm_source=hashnode&utm_medium=feed) Chrome 154 makes HTTPS-first the default for public sites. Learn what breaks in dev, staging & test automation, and how to fix it fast. 14 min read · [instatunnel.hashnode.dev](https://instatunnel.hashnode.dev/chrome-154-asks-before-loading-http-what-changes-for-dev-staging-and-test-automation?utm_source=hashnode&utm_medium=feed) [2h ago](https://hashnode.com/posts/chrome-154-asks-before-loading-http-what-changes-for-dev-staging-and-test-automation/6af53356230ef56d408c6f04) ### [Forwarded Headers Are Not Trusted Input: X-Forwarded-For, Proto and Host Behind a Tunnel](https://instatunnel.hashnode.dev/forwarded-headers-are-not-trusted-input-x-forwarded-for-proto-and-host-behind-a-tunnel?utm_source=hashnode&utm_medium=feed) Behind a tunnel, X-Forwarded-For, Proto and Host are untrusted input. Learn the right trustProxy settings for Express, Fastify, Django and Rails. 11 min read · [instatunnel.hashnode.dev](https://instatunnel.hashnode.dev/forwarded-headers-are-not-trusted-input-x-forwarded-for-proto-and-host-behind-a-tunnel?utm_source=hashnode&utm_medium=feed) [1](https://hashnode.com/posts/forwarded-headers-are-not-trusted-input-x-forwarded-for-proto-and-host-behind-a-tunnel/6af2940f54f4bcba4e4c1d28) [2d ago](https://hashnode.com/posts/forwarded-headers-are-not-trusted-input-x-forwarded-for-proto-and-host-behind-a-tunnel/6af2940f54f4bcba4e4c1d28) ### [Provenance Isn't Proof: What to Check Before You \`npm install -g\` a Tunnel CLI](https://instatunnel.hashnode.dev/provenance-isn-t-proof-what-to-check-before-you-npm-install-g-a-tunnel-cli?utm_source=hashnode&utm_medium=feed) npm provenance isn't proof of safety. Learn how to vet a tunnel CLI before npm install -g: pin versions, ignore-scripts, verify checksums, limit 12 min read · [instatunnel.hashnode.dev](https://instatunnel.hashnode.dev/provenance-isn-t-proof-what-to-check-before-you-npm-install-g-a-tunnel-cli?utm_source=hashnode&utm_medium=feed) [3d ago](https://hashnode.com/posts/provenance-isn-t-proof-what-to-check-before-you-npm-install-g-a-tunnel-cli/6af156735fb96ee873f33bac) ### [Your Agent Card Needs a Public URL: Testing A2A Push Notifications on Localhost](https://instatunnel.hashnode.dev/your-agent-card-needs-a-public-url-testing-a2a-push-notifications-on-localhost?utm_source=hashnode&utm_medium=feed) Your A2A agent card needs a public URL. Learn to test push notifications on localhost with a stable tunnel and SSRF-safe webhook registration. 19 min read · [instatunnel.hashnode.dev](https://instatunnel.hashnode.dev/your-agent-card-needs-a-public-url-testing-a2a-push-notifications-on-localhost?utm_source=hashnode&utm_medium=feed) [3d ago](https://hashnode.com/posts/your-agent-card-needs-a-public-url-testing-a2a-push-notifications-on-localhost/6af01788713a8eeff70e456f)