InstaTunnel docs wa doko kara hajimeru no ga yoi desu ka?

Kono junban ga suisho desu: CLI install -> auth -> first tunnel, sono ato use case ni awasete MCP/webhooks/referrals. Nichijou unyou wa CLI Flags to Troubleshooting o tsukatte kudasai.

Last reviewed: March 5, 2026

Compatibility: Core docs wa CLI v1 default to streaming client no tame no MCP --transport v2 ni taiou shiteimasu.

Quick command

instatunnel auth login -e you@example.com && instatunnel 3000 --subdomain docs-demo

Common failures and quick fixes

Auth not persisted-instatunnel auth set-key it_your_api_key de key o local ni hozon shite kudasai.
Webhook 401 signature errors-Production test mae ni /docs/webhooks no provider betsu secret verification guide o shiyou shite kudasai.

Evidence and trust

Compatibility, reliability, security posture no kakunin ni tsukatte kudasai.

Release cadence

CLI to docs no release notes wa tsune ni update sare, version goto no compatibility note ga arimasu.

View release notes

Security controls

Security whitepaper de policy enforcement, auth layer, operational safeguards o kakunin dekimasu.

Open security whitepaper

Reliability runbooks

Troubleshooting guide ni common failure, recovery step, CLI baseline ga matomatteimasu.

Read troubleshooting guides

Custom Subdomains

Create memorable, consistent URLs for your tunnels with custom subdomains. Perfect for demos, development, and sharing.

🎯 Basic Custom Subdomains

Simple Custom Subdomain

# Create tunnel with custom subdomain

$ instatunnel 3000 --subdomain myapp

✅ Tunnel created: https://myapp.instatunnel.my

📋 URL copied to clipboard!

# Short form

$ instatunnel 3000 -s myapp

Instead of random URLs like abc123.instatunnel.my, get memorable URLs like myapp.instatunnel.my

Random Subdomains

# Let InstaTunnel generate a random subdomain

$ instatunnel 3000

✅ Tunnel created: https://k8m9n2.instatunnel.my

# Every tunnel gets a unique 6-character subdomain

$ instatunnel 8000

✅ Tunnel created: https://x3p7q1.instatunnel.my

When no subdomain is specified, InstaTunnel automatically generates a unique 6-character subdomain.

Subdomain Best Practices

# Environment-based patterns

$ instatunnel 3000 --subdomain myapp-dev

✅ Tunnel created: https://myapp-dev.instatunnel.my

# Feature branch patterns

$ instatunnel 3000 --subdomain myapp-feature-auth

✅ Tunnel created: https://myapp-feature-auth.instatunnel.my

# Personal development patterns

$ instatunnel 3000 --subdomain john-myapp

✅ Tunnel created: https://john-myapp.instatunnel.my

Use consistent naming patterns for organized development workflows.

⚠️ Subdomain Availability

Handling Conflicts

# When subdomain is already taken

$ instatunnel 3000 --subdomain myapp

❌ Error: subdomain already taken

# Try with a suffix or variation

$ instatunnel 3000 --subdomain myapp-dev

✅ Tunnel created: https://myapp-dev.instatunnel.my

# Or use a random subdomain

$ instatunnel 3000

✅ Tunnel created: https://m7k3x9.instatunnel.my

Subdomains are first-come-first-served. Try variations or use random subdomains if your preferred name is taken.

Subdomain Rules

✅Must be 3-63 characters long

✅Can contain letters (a-z), numbers (0-9), and hyphens (-)

✅Must start and end with a letter or number

❌Cannot contain uppercase letters or special characters

❌Cannot start or end with a hyphen

💡 Subdomain Tips

Free vs Pro Features

Free Plan

• Custom subdomains (*.instatunnel.my)
• No reservation - first-come-first-served
• 24-hour session duration
• 3 simultaneous tunnels

Pro Plan

• Custom subdomains (*.instatunnel.my)
• Custom domains (yourapp.com)
• Unlimited session duration
• 10 simultaneous tunnels

🎯 Best Practice: Use descriptive subdomains for demos and consistent subdomains for development environments. For quick testing, random subdomains work perfectly.