Other

Deterministic MCP for statistical classifications and survey codelists with provenance.

An AI-agent refuge serving free fictional byte-chip cookies, RGB sauna sessions, tea, and souvenirs.

Decision Layer for AI Agents — 58+ tools, Advisor, MCP. Free key: POST /v1/register {}.

Binary SEC change signal since a date: changed true or false, filing count, form types and the latest official EDGAR filing.

Live reliability for AI agent tools: is it working right now, and how do I call it correctly?

Pay-per-call agent tools (x402, MPP): licenses, entities, NPI, OIG/OFAC screens, FMCSA, OSHA, drive

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.

Is this IP a CDN or reverse proxy? Detects Cloudflare, Akamai, Fastly, CloudFront, Imperva/Incapsula, Sucuri, StackPath, Bunny, KeyCDN, Gcore and others from the announcing network, so you know whether an address is the origin server or an edge. $0.01 per lookup.

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.

Payment card number check: Luhn checksum, card brand from the prefix (Visa, Mastercard, Amex, Discover, JCB, Diners, UnionPay), length validity and masked form. Nothing is stored. Form validation for checkout flows. $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.

Current air quality for a place: PM2.5, PM10, ozone, nitrogen dioxide, sulphur dioxide, carbon monoxide, US AQI and European AQI with a plain-language category. Free Open-Meteo air-quality data. $0.01 per lookup.

Deduplicate lines: unique lines in original order (case-sensitive), plus a case-insensitive count and the duplicates found. Clean lists before processing. $0.01 per call.

Book lookup by ISBN: title, authors, publish date, publisher, page count, subjects, cover image and Open Library link, from the free Open Library API. Cataloguing and citation data. $0.01 per lookup.

Wikidata entity lookup: the Q-id, label, description, aliases, and key claims (instance of, country, population, inception, coordinates, official website, founder, headquarters) resolved to labels. Structured facts for grounding. $0.01 per lookup.

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.

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.

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.

Placeholder text generator: lorem ipsum by word count, sentence count or paragraph count, deterministic-free and safe to paste into mockups and tests. $0.01 per call.

IETF RFC lookup by number: title, authors, publication date, status (Internet Standard, Proposed Standard, Informational...), page count, obsoletes/obsoleted-by/updates relations, keywords, abstract, and links to the HTML/text versions. Protocol-spec navigation for engineering agents. $0.01 per RFC.

Slugify: turns any text into a clean URL slug (lowercase, ASCII, hyphen-separated, accents folded), and also returns snake_case, camelCase, PascalCase, kebab-case and a safe filename. $0.01 per call.

Word, character, sentence, paragraph and unique-word counts for text, plus average word length and the longest word. $0.01 per call.

URL normaliser: lowercases scheme and host, drops default ports, resolves dot segments, sorts query parameters, strips tracking parameters (utm_*, fbclid, gclid, ref…) and fragments, and reports what changed. Deduplicate and canonicalise links. $0.01 per URL.

Matrix homeserver check: reads /.well-known/matrix/server (federation delegation) and /.well-known/matrix/client (client base URL, identity server), probes the federation version endpoint on the delegated host, and returns server software/version, whether federation and client discovery are configured, and registration/login flows advertised. $0.01 per server.

IPv6 normalizer: expand any IPv6 address to its full 8-group form and back to the canonical compressed form (RFC 5952), with type classification (global unicast, link-local, unique local, loopback, multicast, IPv4-mapped). Deduplicate and compare addresses reliably. $0.01 per address.

$0.0002/MB. Keep rows matching a structured predicate — injection-safe, no formula eval. 1¢ x402 min; remainder auto-credits — relaystation.ai/penny

Recent incident density for a supported US city from its open-data portal. Give a city slug and an optional look-back window in days and get aggregated counts of reported incidents by offense category, a fresher signal than the lagged federal data. Counts by type, not a per-incident dump.

Rewrite serviceName (≤32), description (≤500), tags (≤5) for buyer-query rank. Warns on first-index freeze.

Free public-domain books on "Short stories, Finnish": browse the catalogue's works tagged with that Library of Congress subject (187 in Project Gutenberg alone, plus Internet Archive scans), ranked by relevance and popularity, with direct epub/txt/html download links. Add words to narrow by title or author. Re-verified daily. $0.01 per page of 20.

Free films of the 1970s: public-domain and free-licensed feature films, shorts, newsreels and archival footage released 1970-1979, from Internet Archive, most downloaded first, each with year, creator, rights status and the download directory. Add words to narrow. Re-verified daily. $0.01 per page of 20.