Page text diff against your previous call: line-level added and removed text (up to 100 lines each), similarity ratio and word delta, with the baseline stored for 90 days. See exactly what changed on a page, not just that it changed. $0.01 per check.

Word frequency for a page: the top 50 words (stopwords removed) with counts and share, total and unique word counts, and top bigrams. Topic analysis and SEO term research. $0.01 per page.

Newest arXiv preprints on any topic, newest first: title, authors, categories, abstract, PDF link, published date. Track fresh AI, physics, math and CS research daily. $0.02 per search.

Look up a DOI: full paper metadata (title, authors, journal, volume, issue, pages, year, publisher, funders, subjects), citation and reference counts, abstract, links and a ready APA citation. $0.01 per lookup.

The most-cited papers on a topic (Crossref citation counts), for literature reviews and finding the foundational work: title, authors, year, venue, DOI, citations, abstract. $0.02 per search.

Scholarly paper search for research agents: journal articles, conference papers and preprints from Crossref (150M+ works) and arXiv in one call, deduplicated. Title, authors, year, venue, DOI, citation count, abstract, PDF/full-text links. $0.02 per search.

TCP port check: is a port open on a host? Attempts a real TCP connection (common ports: 21, 22, 25, 80, 443, 465, 587, 993, 3306, 5432, 6379, 8080, 8443...) and reports open/closed with connection latency. Connectivity and firewall verification. $0.01 per check.

Trace the full HTTP redirect chain for a URL: every hop with status code and latency, the final URL, whether it ends on HTTPS, and total hops. Link checking, affiliate/tracking link inspection, HTTP-to-HTTPS migration checks and SEO redirect audits. $0.01 per URL.

Satellite images of any place on Earth for a given day since 2000: true color (MODIS Terra/Aqua, VIIRS), false color for burn scars and floods, and night lights, as ready JPEG URLs plus a Worldview link. Send "lat,lon" and optionally a date (YYYY-MM-DD) and area (e.g. 100km). $0.02 per call.

Scrape a website page: fetches the URL and returns the page content as clean Markdown plus title, description, headings, word count and all links (URL and anchor text). Web scraping for agents without a browser, API key or proxy; handles redirects and strips navigation, ads and scripts. $0.01 per page.

SEO audit of a web page with a 0-100 score and a ranked issues list: title and meta description length, H1 and heading structure, canonical tag, noindex, Open Graph and Twitter cards, image alt text, internal and external links, word count, language, viewport and structured data. On-page SEO check for any URL in one call. $0.01 per page.

Postal address candidates from a page: lines that look like street addresses (number + street + city/postal code patterns for US/CA/UK/EU), schema.org PostalAddress data when present, and Google Maps links. Office and location discovery. $0.01 per page.

ads.txt parser: fetches a publisher's ads.txt and lists authorised ad systems with account IDs and relationship (DIRECT/RESELLER), totals per relationship and the top ad exchanges. Ad-tech and publisher research. $0.01 per domain.

Analytics and pixel ID extractor: all Google Analytics (G-/UA-), Google Tag Manager (GTM-), Google Ads (AW-), Meta Pixel, Hotjar, Clarity, HubSpot portal, LinkedIn partner, TikTok and Pinterest tag IDs found in a page's HTML. Link properties across sites, verify installs, research competitors. $0.01 per page.

Article author and byline detection: author from meta tags, schema.org Article/Person, rel=author links and byline patterns, plus published/modified dates and the publisher name. Attribution for research and citation. $0.01 per page.

Broken link check: extracts the links on a page and HEAD-requests up to 30 of them (external first), reporting status per link and the list of broken (4xx/5xx/unreachable) ones. Content QA without a crawler. $0.01 per page.

Caching headers check: Cache-Control directives parsed (max-age, s-maxage, public/private, no-store, immutable, stale-while-revalidate), ETag, Last-Modified, Expires, Age, and CDN cache status headers (cf-cache-status, x-cache). Debug caching and CDN behaviour. $0.01 per URL.

Canonical URL check: the rel=canonical of a page, whether it is self-referencing, absolute and on the same host, the final URL after redirects, and whether the page is set noindex. Catch duplicate-content and indexing mistakes. $0.01 per page.

CDN detection for a site: from response headers (cf-ray, x-served-by, via, x-cache, x-akamai, x-amz-cf-id...), server names and the announcing network of the site's IP. Cloudflare, Akamai, Fastly, CloudFront, Vercel, Netlify, Imperva, Sucuri, Bunny, KeyCDN, Gcore and more. $0.01 per site.

Page change detection: hashes the readable text of a page and compares with the version from your previous call (kept 90 days). Reports whether it changed, how much (word delta and similarity), and a sample of added/removed lines. Watch competitor pages, docs or listings. $0.01 per check.

CMS and platform detection: WordPress, Shopify, Squarespace, Wix, Webflow, Drupal, Joomla, Magento, BigCommerce, Ghost, HubSpot, Framer, Notion, Substack, Contentful/Sanity/Strapi and JS frameworks (Next.js, Nuxt, Astro, SvelteKit, Angular, React, Vue) with version hints from the generator tag and server header. $0.01 per site.

Company profile from a domain in one call: name and description from the homepage, social profiles, contact emails, tech stack and CMS, registration date and registrar, DNS/mail provider, HTTPS status, trust score and detected SaaS vendors. A complete B2B enrichment record. $0.01 per company.

HTTP compression check: whether a page is served with gzip, brotli or zstd, the content-encoding actually negotiated, transfer size vs decoded size where available, and the vary header. Performance sanity check for any site. $0.01 per page.

Does a page contain a phrase? Fetches the page and searches its readable text (case-insensitive) for the phrase you give, returning found/not found with a snippet of context and the match count. Stock alerts, price wording, 'sold out' checks and content verification. $0.01 per check.

Cookie audit from the Set-Cookie headers of a page load: each cookie's name, Secure, HttpOnly and SameSite flags, expiry/max-age, domain and path, with counts of cookies missing Secure or SameSite. Privacy and security hygiene without a browser. $0.01 per page.

CORS check for a URL: sends a request with an Origin (and a preflight OPTIONS) and reports Access-Control-Allow-Origin/Methods/Headers/Credentials, whether the origin is allowed, wildcard use, and the risky combination of wildcard with credentials. Integration and security testing. $0.01 per check.

Date extraction from a page: the published and modified dates from meta tags and schema.org, plus dates found in the text (ISO, US and long forms), the earliest and latest, and a best guess at the publication date. Content freshness and timeline building. $0.01 per page.

Favicon and app icon finder: every icon a site declares (favicon, apple-touch-icon, mask-icon, manifest icons) with sizes and types, plus whether /favicon.ico exists. Get a company logo for cards, CRMs and dashboards. $0.01 per site.

RSS / Atom feed discovery: finds feeds declared in a page's link tags, common feed paths (/feed, /rss, /atom.xml, /feed.xml) that respond, and feed URLs listed in robots.txt or sitemaps. Subscribe agents to any site's updates. $0.01 per site.

Form detection on a page: every form with its action URL, method, field names and types, and a classification (login, signup, search, newsletter, contact, checkout, other), plus whether passwords are posted over HTTPS. Understand what a page lets a user do. $0.01 per page.

Heading structure audit: all H1-H6 with text, H1 count (should be one), skipped levels, empty headings, and the outline as a tree. Fix on-page SEO and accessibility structure. $0.01 per page.

hreflang map: every language and region alternate a page declares (link rel=alternate hreflang), the x-default, and consistency checks (self-reference present, duplicates). See which markets a site serves. $0.01 per page.

HSTS check: the Strict-Transport-Security header on the site (max-age, includeSubDomains, preload), whether it meets Chrome preload-list requirements, and the domain's current status in the HSTS preload list (hstspreload.org). Transport security hardening. $0.01 per domain.

HTTP methods check: which methods a URL accepts, from an OPTIONS request (Allow / Access-Control-Allow-Methods) plus HEAD, GET and a harmless POST probe, with status codes. API and security reconnaissance. $0.01 per URL.

Image inventory for a page: every image with resolved URL, alt text, declared width/height and lazy-loading, plus counts of missing or empty alt attributes (an accessibility and SEO issue). $0.01 per page.

Structured data extractor: every JSON-LD block on a page parsed, with the schema.org types found (Organization, Product, Article, FAQPage, BreadcrumbList, LocalBusiness...), key fields (name, price, rating, author, date) and microdata/Open Graph hints. Rich data without scraping the layout. $0.01 per page.

Keyword and topic extraction from a page: the top 20 terms and top bigrams by frequency (stopwords removed), title and description for context. What is this page about, in one call. $0.01 per page.

Page language detection: the declared html lang and content-language, the language detected from the text itself (12 European languages plus CJK/Arabic scripts), agreement between the two, and the hreflang alternates count. Route content to the right model or translator. $0.01 per page.

Lead card: a one-screen company summary for a CRM from just a domain: company name, one-line description, website, industry hints from keywords, size hints (domain age, tech stack breadth, SaaS vendors), social handles, contact emails, mail provider, location hints and a trust score. $0.01 per lead.

Internal vs external link split for a page: counts and lists (up to 100 each) of same-site and outbound links with anchor text, nofollow/sponsored/ugc counts, and the top external domains. Link-profile and navigation analysis. $0.01 per page.

Bullet and numbered lists from a page as arrays: each list with its items (cleaned text, up to 50 per list), ordered/unordered type and a preceding heading when detectable. Turn feature lists, steps and specs into data. $0.01 per page.

llms.txt reader: checks whether a site publishes llms.txt or llms-full.txt (the emerging standard for telling AI agents what a site offers), returns the content (up to 20 KB) and its headings and links. Discover agent-friendly documentation instantly. $0.01 per domain.

Web app manifest reader: finds and parses a site's manifest.json / site.webmanifest (name, short name, description, start URL, display mode, theme and background colours, icons). Tells you if a site is an installable PWA. $0.01 per site.

Every meta tag on a page: name/property/http-equiv with content, plus title, charset, viewport, robots, canonical, language, and link rel tags (icons, alternates, preconnects). The complete <head> inventory for SEO and integration work. $0.01 per page.

Mixed content check: finds http:// scripts, stylesheets, images, iframes, media and form actions on an HTTPS page (active vs passive), which browsers block or flag. Fix warnings before they cost you conversions. $0.01 per page.

OpenAPI / Swagger discovery: probes the common spec locations (/openapi.json, /swagger.json, /api-docs, /v1/openapi.json, /.well-known/openapi.json...) and any link on the homepage, then summarises the spec: title, version, server URLs, path and operation counts, tags. Find a site's machine-readable API. $0.01 per site.

Open Graph and Twitter Card extractor: og:title, og:description, og:image (with resolved URL), og:type, og:site_name, og:url, og:locale, article dates, plus twitter:card/site/creator/image. Exactly what a share preview will show. $0.01 per page.

Document link finder: every link on a page to PDF, Word, Excel, PowerPoint, CSV, ZIP or other downloadable files, with anchor text and file type counts. Find reports, whitepapers and datasets fast. $0.01 per page.

Phone number extraction from a page: candidate numbers found in the text and tel: links, normalised, with the tel-link ones marked as high confidence. Contact discovery for lead lists. $0.01 per page.

Price extraction from a page: every currency amount in the text and in schema.org/Open Graph price tags, with currency, numeric value, min/max, and product price hints. Price monitoring and catalogue scraping. $0.01 per page.