A site's brand assets: its icons (favicon, apple-touch-icon and web app manifest icons, largest first), the og:image, theme colour and site name, read from the page and its manifest. Falls back to /favicon.ico when the page declares no icon.

Stack Overflow questions matching words, optionally by tags and accepted status: title, score, answer count, accepted flag, tags and link. With answers=1 the accepted answer's first 600 characters are included. Content is CC BY-SA 4.0 (attribution per item). Stack Exchange API 2.3.

Sunrise, sunset, solar noon and day length for a coordinate and date (default today), with the moonrise, moonset and phase. Times are ISO 8601 with the offset MET Norway gives (+00:00 is UTC). Attribution: data from MET Norway (CC BY 4.0).

Gas prices on Base (default), Ethereum, Arbitrum, Optimism, Polygon or Solana, or chain=all for every chain at once: the base fee and slow, normal and fast priority fees, the latest block, and what a plain transfer and an ERC-20 transfer cost in native token and USD. EVM figures come from eth_feeHistory over the last 20 blocks; Solana from recent prioritization fees. Cached 15 seconds.

Who owns an IP address: network name, CIDR, owner, abuse contact (RDAP), ASN and holder (RIPEstat), and reverse DNS. Private, reserved and documentation addresses are refused with 400. Public registry data only.

An EVM block by number, or the latest one: hash, time, transaction count, gas used and limit, and base fee in gwei. Read over public RPC.

Place names to coordinates and back: up to 5 matches for a name, or the place at a coordinate. Each match has a display name, latitude and longitude, country code and type. Attribution: © OpenStreetMap contributors, ODbL. Results are cached seven days.

Public holidays of a country (ISO 2 code) for a year (default: this year): date, local and English names, and whether the holiday is nationwide or regional with its counties. Source: Nager.Date. An empty list is a valid answer.

Items of an RSS, Atom or RDF feed, or of the feed a web page advertises: title, link, published date, author and a 300-character summary, newest first (max 50). since keeps items published on or after a date.

Validates JSON data against a JSON Schema (draft 2020-12): valid true or false, and up to 50 errors with the instance path, the keyword and the message. Schema and data are each limited to 200 KB. Remote $ref targets are not fetched. No network call.

Whether a site publishes /llms.txt and /llms-full.txt: the parsed llms.txt (title, summary, sections with their links) and the size of llms-full.txt. Reads the site itself, through the same URL guard and size cap as the page tools.

US healthcare providers from the NPPES NPI Registry: look up one by its 10-digit NPI (check digit verified) or search by name with an optional state. Each provider gives type, name, credential, status, primary taxonomy and practice address. Information only, not medical advice.

Place names and coordinates for a postcode. GB adds district, ward and constituency (postcodes.io); other countries use Zippopotam.us for ZIP and postal codes. A postcode that does not exist answers 404, not charged.

Sentiment of one text, or up to 20 (texts, a JSON array), each up to 2,000 characters: POSITIVE or NEGATIVE with the model's confidence, from DistilBERT SST-2. Best for short English text. It measures the wording, not whether the statement is true.

PubMed articles matching words, optionally from a year: PMID, title, first five authors, journal, date, DOI and link. Two NCBI requests. Attribution: PubMed (NCBI). Information only, not medical advice.

Checks and formats a phone number with libphonenumber: valid and possible flags, E.164, international and national formats, country, calling code and line type (mobile, fixed line, toll free and so on). Without a + sign, give the country. No network call.

Weather for a place or a coordinate: current conditions, the next 48 hours and 7 days (temperature, precipitation, wind, symbol). Forecast from MET Norway, cached until its own expiry time. Attribution: Data from MET Norway (CC BY 4.0).

Rewrite a text in a chosen tone (neutral, formal, casual, simple, persuasive) and length (shorter, same, longer), keeping its meaning and language. Up to 3 variants. Workers AI (Llama 3.3 70B) writes the rewrite; only the rewritten text is returned. Up to 8,000 characters. Not live-checked: the owner tests it on the Worker after the merge. The model can change nuance, so read the result.

A YouTube video's captions as plain text and timestamped segments, with the video's title, channel, duration, views, publish date, chapters and the list of caption languages. Accepts watch, youtu.be, shorts, embed and live links or the 11-character id; pick a language with lang (default English, else the first track). Auto-generated captions contain recognition errors. A video without captions is a 404 and not charged.

Google PageSpeed Insights for one public URL: the Lighthouse scores (performance, seo, accessibility, best-practices), the lab Core Web Vitals (FCP, LCP, CLS, TBT, Speed Index), the CrUX field data when Google has it (LCP, INP, CLS), and the top five opportunities with estimated savings. Mobile by default. A run takes 10 to 40 seconds and is cached for an hour. Keyless calls share Google's quota, so a busy moment is a 503.