Readability of a page's text: Flesch Reading Ease, Flesch-Kincaid grade level, average sentence length, syllables, word and sentence counts, difficulty label and reading time. Content quality and audience-fit checks. $0.01 per page.

Reading time and word count for a page: words, characters, paragraphs, estimated reading time at 238 wpm and speaking time at 150 wpm. Lightweight content sizing for feeds and summaries. $0.01 per page.

Redirect audit for a domain: how http://, https://, www and apex variants each resolve, where they end, hop counts and status codes, and whether all four converge on a single canonical HTTPS URL. Catch split traffic and SEO dilution. $0.01 per domain.

Domain risk report for fraud and phishing screening: domain age and expiry, typosquat-of-brand hints, DNS and mail hygiene (SPF/DMARC/MX), HTTPS and certificate, homepage presence and content, trackers, DNSBL listing of the site's IP, and an overall risk level with reasons. Vet a counterparty or a link before trusting it. $0.01 per domain.

robots.txt fetched and parsed: every user-agent group with its allow/disallow rules and crawl-delay, declared sitemaps, and whether the file exists at all. Understand a site's crawl policy before fetching it. $0.01 per site.

Link preview card data (unfurl): the best title, description and image for a URL from Open Graph, Twitter Card, schema.org and the page itself, with site name, favicon, canonical URL, type and image validation. Everything a chat app or feed needs to render a link card. $0.01 per URL.

Website security posture report with an A-F grade: HTTPS and redirect to HTTPS, HSTS, security headers (CSP, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy), cookie flags, DNS hygiene (SPF, DMARC, DNSSEC, CAA), server header exposure and TLS certificate validity. Vendor vetting in one call. $0.01 per domain.

security.txt reader (RFC 9116): fetches /.well-known/security.txt (and the legacy /security.txt), parses Contact, Policy, Expires, Encryption, Acknowledgments, Preferred-Languages and Canonical, and flags an expired file. Find the right way to report a vulnerability. $0.01 per domain.

On-page SEO quick audit for a single URL with a 0-100 score: title and meta-description presence and lengths, H1 count and heading order, canonical tag (self-referencing?), meta robots/noindex, Open Graph and Twitter cards, image alt-text coverage, internal/external link counts, word count, lang attribute, viewport, and structured data presence. Returns the issues list ranked by weight. $0.01 per page.

Technical SEO report for a site with a 0-100 score: title and description lengths, H1, canonical, robots meta and robots.txt, sitemap presence and size, HTTPS and www redirects, Open Graph, structured data, hreflang, image alt coverage, word count and page weight. Prioritised issues list. $0.01 per site.

Shopify store detection: whether a site runs on Shopify (asset hosts, Shopify.theme object, checkout hints), the theme name and ID when visible, currency, and whether the /products.json catalog endpoint is public with a product count. E-commerce prospecting. $0.01 per site.

Sitemap URL list: fetches sitemap.xml (or the URL you give), expands sitemap indexes up to two levels, and returns the page URLs (up to 500 shown), total count, sitemaps visited and lastmod range. Crawl planning and site inventory. $0.01 per site.

How many pages does a site declare? Counts URLs across sitemap.xml and any sitemap index (up to 5000 counted), reports sitemaps visited and newest lastmod. A fast estimate of site size. $0.01 per site.

URL uptime history: checks the URL now and keeps the last 50 checks (status, latency, up/down) per URL across your calls, returning uptime percentage and average latency over the stored window. A tiny status log you build by calling on a schedule. $0.01 per check.

HTML tables to JSON: every table on a page as arrays of rows (header row detected, cells cleaned of markup), with row and column counts and a caption. Pull structured data out of any web page. $0.01 per page.

Third-party script inventory: every external domain a page loads scripts, styles, frames or images from, grouped by host with counts and categorised (analytics, ads, CDN, fonts, social, chat, payments). Privacy review and supply-chain risk in one call. $0.01 per page.

Title and description change detection: records a page's title and meta description on each call and tells you when either changes compared with your previous call (kept 90 days). Catch rebrands, hijacks and SEO edits. $0.01 per check.

Tracker and analytics detection on a page: Google Tag Manager, GA4/UA, Meta Pixel, Hotjar, Clarity, HubSpot, Segment, LinkedIn Insight, TikTok, Pinterest, Intercom, Mixpanel, Amplitude, Sentry, consent managers, Google Ads and more, with the IDs where visible. Privacy audits and competitive tooling research. $0.01 per page.

Web application firewall detection: signs of Cloudflare WAF, AWS WAF, Akamai Kona, Imperva, Sucuri, F5 BIG-IP, Barracuda, Fortinet, ModSecurity and others from response headers, cookies and block-page behaviour on a probe request. Know what stands in front of an app. $0.01 per site.

Page weight and resource inventory from the HTML: document bytes, script/stylesheet/image/iframe/font counts, inline script bytes, external hosts contacted, and a simple heaviness verdict. A quick performance smell test without a browser. $0.01 per page.

Well-known file scan: checks 37 standard URLs on a domain (robots.txt, sitemap.xml, security.txt, ads.txt, llms.txt, openapi.json, manifest, openid-configuration, apple-app-site-association, assetlinks, webfinger, nodeinfo, agent.json, ai-plugin.json, matrix, did.json, feeds...) and reports which exist. Fast site reconnaissance. $0.01 per domain.

WordPress detection and fingerprint: is the site WordPress, the version from the generator tag or feed, the active theme and plugins visible in HTML paths, whether the REST API (/wp-json) and XML-RPC are exposed, and the login page presence. Security and sales research. $0.01 per site.

Find a company's social media profiles from its website: Twitter/X, LinkedIn, Facebook, Instagram, YouTube, GitHub, TikTok, Discord and Telegram links discovered on the homepage, plus any contact email addresses found. Lead enrichment and company research from a domain. $0.01 per site.

SSL/TLS certificate expiry check for a hostname: issuer, common name, SANs, valid-from and valid-to dates, days until expiry and whether it is valid now, from public certificate-transparency logs, plus whether the site currently answers over HTTPS. Certificate expiry monitoring and alerts. $0.01 per host.

Subdomain finder from certificate-transparency logs: every hostname under a domain that has appeared in public TLS certificates (crt.sh), deduplicated and sorted, up to 500. Attack-surface mapping, asset discovery and competitor research. $0.01 per domain.

Website technology detection: CMS and frameworks (WordPress, Shopify, Next.js, React, Webflow...), analytics and tag managers, hosting/server and CDN hints, generator meta tag, from the live homepage. Tech stack lookup for sales prospecting, competitor research and integration planning. $0.01 per site.

Website uptime, availability and SSL/TLS certificate check: is the site up, HTTP status, response latency, full redirect chain and final URL, server header, HTTPS and security headers (HSTS, CSP, X-Frame-Options), plus the latest public TLS certificate from certificate-transparency logs with issuer, validity dates and days until expiry. Monitoring, SSL expiry alerts and health checks for any hostname or URL. $0.01 per check.

Is this website up? URL status check: reachable or not, HTTP status code, response latency in milliseconds, number of redirects, final URL and any connection or TLS error. Lightweight uptime probe and dead-link checker for monitoring and link validation. $0.01 per URL.

Validate email address: checks syntax, whether the domain exists and accepts mail (MX records), disposable or temporary email domains, role addresses (info@, admin@), free webmail providers and SPF/DMARC presence, then returns deliverable / risky / undeliverable with the reason. Email validation for signups, lead lists and CRM cleaning, no API key. $0.01 per address.

Change watch for contact email finder: runs the check and compares it with the result from your previous call for the same domain (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when find public contact email addresses on a company's homepage changes. $0.01 per check.

Change watch for convert webpage to markdown: runs the check and compares it with the result from your previous call for the same url (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when convert webpage to markdown changes. $0.02 per check.

Change watch for disposable email check: runs the check and compares it with the result from your previous call for the same email (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when disposable / temporary email detection changes. $0.01 per check.

Change watch for dns lookup: runs the check and compares it with the result from your previous call for the same domain (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when dns lookup for any domain in one call changes. $0.01 per check.

Change watch for dns a records: runs the check and compares it with the result from your previous call for the same domain (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when dns a record lookup changes. $0.01 per check.

Change watch for dns aaaa records: runs the check and compares it with the result from your previous call for the same domain (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when dns aaaa record lookup changes. $0.01 per check.

Change watch for dns all records: runs the check and compares it with the result from your previous call for the same domain (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when all common dns records for a domain in one call changes. $0.01 per check.

Change watch for dnsbl check: runs the check and compares it with the result from your previous call for the same ip (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when ip blacklist changes. $0.01 per check.

Change watch for dns caa records: runs the check and compares it with the result from your previous call for the same domain (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when dns caa record lookup changes. $0.01 per check.

Change watch for dns cname record: runs the check and compares it with the result from your previous call for the same domain (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when dns cname record lookup for a hostname changes. $0.01 per check.

Change watch for dkim selector scan: runs the check and compares it with the result from your previous call for the same domain (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when dkim selector scan changes. $0.01 per check.

Change watch for dnssec check: runs the check and compares it with the result from your previous call for the same domain (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when dnssec check for a domain changes. $0.01 per check.

Change watch for dns https record: runs the check and compares it with the result from your previous call for the same domain (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when dns https/svcb record lookup changes. $0.01 per check.

Change watch for idn punycode convert: runs the check and compares it with the result from your previous call for the same domain (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when idn / punycode converter and homograph check changes. $0.01 per check.

Change watch for mail provider detect: runs the check and compares it with the result from your previous call for the same domain (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when mail provider detection for a domain changes. $0.01 per check.

Change watch for dns mx records: runs the check and compares it with the result from your previous call for the same domain (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when dns mx record lookup changes. $0.01 per check.

Change watch for nameserver health: runs the check and compares it with the result from your previous call for the same domain (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when nameserver health for a domain changes. $0.01 per check.

Change watch for dns ns records: runs the check and compares it with the result from your previous call for the same domain (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when dns ns record lookup changes. $0.01 per check.

Change watch for dns provider detect: runs the check and compares it with the result from your previous call for the same domain (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when dns hosting provider detection changes. $0.01 per check.

Change watch for dns propagation check: runs the check and compares it with the result from your previous call for the same domain (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when dns propagation check changes. $0.01 per check.

Change watch for reverse dns lookup: runs the check and compares it with the result from your previous call for the same ip (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when reverse dns changes. $0.01 per check.