Developer Guides
Guides on localhost tunneling, local webhook debugging, ngrok alternatives, and secure HTTPS tunnels for modern development teams.
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Test Lemon Squeezy Webhooks on Localhost
Test Lemon Squeezy webhooks on localhost with Test mode, a secure HTTPS tunnel, raw-body HMAC verification, retries, and subscription debugging.
Test PayPal Sandbox Webhooks on Localhost
Test PayPal sandbox webhooks on localhost with an HTTPS tunnel, simulator events, signature verification, retries, and practical debugging steps.
Test Polar Webhooks Locally with the Polar CLI
Test Polar webhooks locally with the Polar CLI, Standard Webhooks signature verification, Next.js code, idempotency, and practical debugging steps.
Anthropic Tool Use Locally: Tunnels for Claude Workflows
Test Anthropic tool use and MCP servers locally. When Claude tool use needs a tunnel, when it doesn't, and how to debug long-running workflows.
Discord Webhooks vs Interactions, Tested Locally
Discord webhooks are easy. Discord interaction endpoints are not. Here is the practical guide to testing both locally with HTTPS and Ed25519 verification.
Django Webhooks: Past CSRF and Into the Handler
Test Django webhooks locally without CSRF blocking POSTs. Real fixes for raw body access, signature verification, and the DRF parser order trap.
GitHub Apps vs OAuth Apps: Webhooks Side by Side
GitHub Apps and OAuth Apps look similar in the docs. They behave nothing alike. A practical comparison of webhook scope, auth, and local testing.
Why Your Webhook Returns 401 or 403 (and How to Fix It)
Webhook 401 and 403 errors are almost always one of five things. A diagnostic walkthrough that pinpoints which one before you waste an afternoon.
Localhost HTTPS: mkcert vs Tunnel, Honestly Compared
Need HTTPS on localhost? Compare mkcert local certificates and tunnel-based public HTTPS. Real trade-offs for OAuth, webhooks, and mobile testing.