Check the SSL/TLS certificate of a domain. Returns issuer, validity dates, expiry countdown, protocol version, cipher suite, and certificate chain details.

Check security headers for a URL. Returns present and missing headers (HSTS, CSP, X-Frame-Options, etc.) with a security grade.

Inspect an email address. Checks format validity, MX records, domain resolution, disposable domain detection, and role-based address detection.

Parse a User-Agent string. Detects browser name and version, operating system, device type, and whether it's a bot or crawler.

Get geolocation data for an IP address. Returns country, city, region, coordinates, timezone, ISP, and organization.

Query DNS records for a domain. Returns A, AAAA, MX, TXT, CNAME, NS, SOA, SRV, CAA, PTR records. Optionally filter by record type.

Check whether a DNS change has propagated: asks Google, Cloudflare, Quad9, OpenDNS and AdGuard the same question at once and reports which resolvers agree, with TTLs. Different answers can also mean load balancing, not only an unfinished change.

Follow a URL's redirect chain. Shows every hop with HTTP status code, final destination URL, and total number of redirects.

Extract meta tags from a URL. Returns OpenGraph tags, Twitter Card tags, standard meta tags, title, and description.

Check if a URL is reachable. Returns HTTP status code, response time, content type, and SSL status.

Fetch and parse a domain's robots.txt file. Returns user-agent rules, allowed/disallowed paths, crawl delays, and sitemap URLs.

Find favicon URLs for a website. Returns all discovered icons with their URLs, types, and sizes.

Validate a URL's format and reachability. Checks syntax, whether it resolves, SSL status, response code, and response time.

Validate email authentication records (SPF, DKIM, DMARC) for a domain. Checks if each record exists, is valid, and returns the raw records.

Measure website performance. Returns DNS lookup time, TCP connect time, SSL handshake time, TTFB, content download time, and total load time.

Look up WHOIS registration data for a domain. Returns registrar, creation date, expiration date, name servers, and contact info.

Decode a JWT token without verification. Returns the header, payload with all claims, signature, and expiry information.

Analyze text content. Returns word count, character count, sentence count, paragraph count, reading time, speaking time, and top word frequency.

Get the public IP address of the MCP server. Returns the IP, version (IPv4/IPv6), and whether it's a private address.

Convert HTML content to a PDF document. Send HTML markup and receive a PDF. Useful for generating invoices, reports, and documents.

Convert Markdown text to HTML. Supports GFM (GitHub Flavored Markdown) including tables, code blocks, and task lists.

Format, validate, and analyze JSON. Returns formatted output, minified version, and stats (key count, depth, size, type counts).

Convert a JSON array of objects to CSV format. Handles nested objects and custom delimiters.

Encode or decode a Base64 string. Supports standard and URL-safe Base64.

Parse and format a phone number into E.164, national, and international formats. Validates the number and identifies the country.

Validate JSON data against a JSON Schema definition (Draft-07+). Returns whether the data is valid and detailed error messages if not.

Convert a color between HEX, RGB, and HSL formats. Input any format and get all three representations back.

Convert between Unix timestamps and human-readable dates. Returns ISO 8601, RFC 2822, human-readable, and Unix formats with timezone support.

URL-encode or decode a string. RFC 3986 compliant encoding for URLs and query strings.

Generate a cryptographic hash of the input text. Supports MD5, SHA-1, SHA-256, SHA-384, SHA-512, CRC32, and Whirlpool.

Generate a QR code image from text or a URL. Returns SVG with customizable size, colors, and margin.

Generate UUID identifiers. Supports v4 (random) and v7 (time-sorted). Bulk generation up to 50 at once.

Generate cryptographically secure random passwords. Configurable length, character sets, and exclusions.

Generate Lorem Ipsum placeholder text. Choose between words, sentences, or paragraphs with a configurable count.

Capture a screenshot of any webpage as PNG or JPEG. Configurable viewport size, full-page mode, and image quality.

Parse a cron expression into a human-readable description and calculate next run times. Supports standard 5-field cron and special strings like @daily, @hourly.

Convert CSV data to a JSON array of objects. Supports custom delimiters, header detection, and quoted fields.

Convert HTML content to clean Markdown. Supports GitHub Flavored Markdown with tables and strikethrough. Useful for scraping web content for LLM processing.

Look up an HTTP status code. Returns the name, description, common causes, how to fix, and RFC reference. Covers all standard codes plus Cloudflare codes.

Convert YAML content to JSON. Supports multi-document YAML, anchors, aliases, and Kubernetes config files.

Convert XML content to a JSON object. Handles attributes, namespaces, CDATA sections, and nested elements. Useful for parsing RSS feeds, SOAP responses, and legacy XML data.

Convert a JSON object to well-formed XML. Supports custom root element, attribute conversion, and XML declaration toggle.

Test a regular expression pattern against text. Returns all matches, captured groups, named groups, and match positions. Useful for validating patterns before deploying them.

Compare two JSON objects and return a structured diff. Shows additions, deletions, and changes with JSONPath locations. Useful for comparing API responses, config files, or database records.

Convert Markdown content to a downloadable PDF document. Supports GFM tables, code blocks, and custom page sizes. Returns a URL to the generated PDF.

Convert a JSON object to YAML format. Useful for generating Kubernetes configs, Docker Compose files, and CI/CD pipeline definitions from JSON data.

Check if a URL has CORS headers configured. Sends a preflight OPTIONS request and reports allowed origins, methods, headers, and security issues. Useful for debugging frontend API integration problems.

Fetch and parse a sitemap.xml file. Returns all URLs with lastmod, changefreq, and priority metadata. Can follow sitemap index files. Useful for SEO audits and content discovery.

Fetch a web page and extract all structured data (JSON-LD, Microdata, RDFa). Validates against common Schema.org types and reports missing properties. Useful for SEO audits.

Scan an HTTPS page for mixed content (HTTP resources on HTTPS pages). Finds insecure images, scripts, stylesheets, and iframes that cause browser warnings. Reports severity (active vs passive) and line numbers.