Tools

Developer debugging tools

Start with the first live debugger, then use focused fix-kit pages as they launch.

HubSpot Forms API Debugger

Validate HubSpot form payloads, required fields, consent blocks, hutk and context data.

Live
Open Debugger

Stripe Webhook Debugger

Diagnose signature verification errors, raw body mistakes, endpoint secrets and PHP webhook handling.

Live
Open Debugger

Cloudflare 524 Debugger

Find timeout risks in shared-hosting PHP apps and get queue, cron, and polling patterns for long-running jobs.

Live
Open Debugger

Brevo SMTP Debugger

Diagnose Brevo SMTP host, port, TLS, authentication, sender verification, and shared-hosting mailer errors.

Live
Open Debugger

PHPMailer SMTP Debugger

Diagnose PHPMailer SMTPAuth, host, port, TLS/SSL, sender, connection, and authentication errors.

Live
Open Debugger
Guides
Connect failed Auth Port/TLS WordPress Certificate SMTPDebug

GitHub Actions FTP Deploy Debugger

Diagnose FTP deploy workflow YAML, GitHub Secrets, cPanel paths, Namecheap shared-hosting errors, and 530/550/TLS log clues.

Live
Open Debugger

WordPress wp_mail Debugger

Diagnose WordPress email failures, From address alignment, SMTP plugin setup, contact form, WooCommerce, and shared-hosting mail clues.

Live
Open Debugger

WordPress REST API Debugger

Diagnose REST API 401, 403, nonce, Application Password, route, method, permission callback, and security plugin clues.

Live
Open Debugger

OAuth Redirect URI Debugger

Compare provider dashboard callbacks against app-sent redirect_uri values to find HTTPS, domain, path, slash, query, and environment mismatches.

Live
Open Debugger

cPanel DNS Email Setup Debugger

Diagnose MX routing, SPF, DKIM, DMARC, cPanel local/remote exchanger, Cloudflare DNS, provider mismatch, and bounce clues.

Live
Open Debugger

WooCommerce Email Debugger

Diagnose order confirmation failures, disabled WooCommerce email templates, order status triggers, wp_mail/SMTP issues, sender alignment, and delivery clues.

Live
Open Debugger