Everything you need to know about NetworkToolz, the API, MCP server, and AI integrations.
NetworkToolz is a free online platform providing 20 professional-grade network and security diagnostic tools — DNS lookup, SSL checker, WHOIS, port scanner, IP blacklist check, web security scanner and more. No registration required to use the tools on the website.
Yes — all 20 tools on the website are completely free with no registration required. The API (for developers and AI integrations) has a free tier of 1,000 requests/month. We're supported by non-intrusive advertising and affiliate partnerships.
We offer 20 tools: DNS Lookup, DNS Propagation, DNS Troubleshoot, WHOIS Lookup, SSL Checker, SSL Deep Analysis, IP Geolocation, Reverse DNS, IP Blacklist Check, Email Server Test, SMTP Troubleshoot, HTTP Headers, Port Scanner, Ping & Traceroute, What Is My IP, Speed Test, Web Security Scanner, WordPress Scanner, Performance Scanner, and HTTP/2 & HTTP/3 Tester.
No account is needed to use the tools on the website. An account is only required if you want API access to use the tools programmatically or integrate them with AI systems like Claude or ChatGPT.
Sign up at networktoolz.com/join using your Google or GitHub account. Your first API key is automatically created. You can manage all your keys from the dashboard at networktoolz.com/dashboard.
The free plan includes 1,000 API requests per month with a rate limit of 10 requests per minute and 1 API key. This resets on the 1st of each month.
Free: 1,000 req/month ($0). Pro: 50,000 req/month ($19/month). Business: 500,000 req/month ($79/month). Enterprise: Unlimited (custom pricing). All plans include access to all 20 tools.
Add your API key as a Bearer token in the Authorization header: Authorization: Bearer YOUR_API_KEY. Get your key from networktoolz.com/dashboard.
The API is available at two URLs: https://networktoolz.com/api/v1/ and https://api.networktoolz.com/api/v1/. Both are identical — use whichever you prefer.
Your API key is automatically disabled when you reach your monthly request limit. It will be re-enabled at the start of the next month. You can upgrade your plan at any time from the dashboard to get more requests immediately.
Yes! Here's a quick test using curl: curl -X POST https://networktoolz.com/api/v1/dns-lookup \ -H "Authorization: Bearer YOUR_API_KEY" \ -H "Content-Type: application/json" \ -d '{"domain": "example.com"}'
Yes — the OpenAPI 3.1 spec is available at https://networktoolz.com/api/v1/openapi. You can use this to generate client SDKs, connect to ChatGPT Actions, or import into Postman.
MCP (Model Context Protocol) is an open standard created by Anthropic that allows AI models like Claude to call external tools and services in real time. When you connect NetworkToolz via MCP, Claude can perform DNS lookups, SSL checks, blacklist checks and more — automatically, when you ask it to.
The MCP server is available at: https://mcp.networktoolz.com/mcp. You'll need a NetworkToolz API key to use it.
Open Claude Desktop → Settings → Developer → Edit Config. Add this to your claude_desktop_config.json:
{
"mcpServers": {
"networktoolz": {
"url": "https://mcp.networktoolz.com/mcp",
"headers": {
"Authorization": "Bearer YOUR_API_KEY"
}
}
}
}Replace YOUR_API_KEY with your key from networktoolz.com/dashboard.
Once connected, you can ask Claude things like: 'Check the DNS records for example.com', 'Is my IP blacklisted?', 'What's the SSL grade for this website?', 'Troubleshoot why my email isn't being delivered', 'Scan this WordPress site for security issues'. Claude will call the appropriate NetworkToolz tool and return real-time results.
Yes — each tool call via MCP counts as one API request toward your monthly limit, the same as REST API calls.
All 19 diagnostic tools are available via MCP: dns_lookup, whois_lookup, ssl_check, ssl_deep_analysis, ip_geolocation, reverse_dns, ip_blacklist_check, email_server_check, smtp_troubleshoot, http_headers, port_scan, web_security_scan, wordpress_scan, dns_propagation, dns_troubleshoot, performance_scan, http_protocol_test, ping_traceroute, and get_my_ip.
Yes — you can connect NetworkToolz to any Custom GPT using GPT Actions. Use our OpenAPI spec at https://networktoolz.com/api/v1/openapi to set up the action in your Custom GPT configuration.
Yes — NetworkToolz tools can be used as Gemini function declarations. We will publish official Gemini integration documentation soon.
Absolutely. The REST API works with any programming language or platform that can make HTTP requests. Popular integrations include Python scripts, Node.js apps, PHP applications, Zapier automations, and AI chatbots.
Any language that supports HTTP requests — Python, JavaScript/Node.js, PHP, Ruby, Go, Java, C#, curl, and more. The API uses standard JSON requests and responses.
Yes — the API subdomain (api.networktoolz.com) has CORS enabled with Access-Control-Allow-Origin: * so you can call it directly from browser-based applications.
Most tools respond in under 500ms for cached results. Fresh (uncached) results typically take 1-5 seconds depending on the tool. Results are cached for 5-10 minutes to improve performance.
All API responses follow this format: { "success": true, "data": { ...tool results... }, "meta": { "tool": "dns-lookup", "api_version": "v1" }, "usage": { "requests_used": 5, "requests_limit": 1000, "plan": "free" } }
Use our contact form at networktoolz.com/contact or email [email protected]. We read every message and respond within 24-48 hours.
Go to networktoolz.com/join and sign in with your Google or GitHub account. No password required — we use secure OAuth authentication.
Yes — if your company uses Google Workspace, you can sign in with your company Google account. GitHub accounts with any email also work.
Go to networktoolz.com/dashboard and click 'Upgrade'. Plan upgrades are available via Stripe — all major credit cards accepted. Upgrades take effect immediately.
Yes — go to your dashboard profile settings and click 'Delete Account'. This permanently removes all your data including API keys and usage history. This cannot be undone.
Yes — API keys are stored as bcrypt hashes (we never store the plain key). All connections use TLS 1.3. We do not sell your data. See our Privacy Policy for full details.
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