information-retrieval

What a host says about itself: status, server, content type, caching, and which security headers are set or missing.

The feeds a site declares in its HTML head, with title and type, for when you know a site publishes updates but not where.

Fetch a public web page and return clean readable text with its title and metadata - the form a model can actually use, with navigation, scripts and styling removed. Follows up to 3 redirects, caps the download at 2000000 bytes and gives up after 15000ms. Reaches the PUBLIC internet only: the hostname is resolved and every redirect hop re-checked against private, loopback, link-local and CGNAT ranges, so this cannot read internal services or cloud metadata. Returns raw HTML too on request.

Get inflows and outflows for an entity. Can be filtered by chains.

Search for entities which can then be used in other queries.

Issue or verify a canonical human mandate checksum and deterministic action constraints, including signature trust-policy checks.

Verify a factual claim against fresh web evidence.

Look up a country or territory by ISO 3166-1 alpha-2, alpha-3 or numeric code, or by name, and get the other codes, the English name, the UN M49 region and sub-region, the currencies in use, and the country-code top-level domain. Names are matched case- and accent-insensitively. Country level only: ISO 3166-2 subdivisions are not included.

Parse and canonicalise a URL, and extract its registrable domain using the Public Suffix List — the part an agent needs to decide whether two URLs belong to the same owner. Returns scheme, host, port, path, decoded query parameters and fragment, the public suffix, the registrable domain (eTLD+1), the subdomain, whether the suffix is an ICANN or a private entry, plus a canonical form with default port, dot-segments and percent-encoding normalised. unicode_host uses WHATWG/UTS 46 (non-strict).

Compute a cryptographic digest of supplied data: SHA-256, SHA-384, SHA-512, SHA-1, SHA3-256, SHA3-512, Keccak-256, BLAKE2b-256 and BLAKE2b-512, plus HMAC with any of them. Input is UTF-8 text, base64 or hex bytes; output is hex, base64, base64url or base32. Returns the digest, the byte length of the input, and the exact algorithm identifier used.

Open safety recalls for a vehicle, by make/model/year or by campaign number, as published by the manufacturer's regulator.

Follow a URL's redirect chain hop by hop: every step, the final destination, whether it crossed hosts, and a copy with tracking parameters stripped.

Parse any RSS, Atom or RDF feed into normalized JSON: feed title, description and up to 100 items with title, link, publish date, author, summary and categories. Ideal for agents monitoring news sources, blogs and changelogs.

Registration data for a domain via RDAP: registrar, creation/expiry dates, status codes and nameservers.

Fetch a public web page and return its main content as clean Markdown (menus, ads and boilerplate removed) plus title, byline, publish date and word count. Falls back to headless Chromium for JavaScript-only pages; render=true forces it. PDFs are returned as text.

Fetch a URL and analyse its Content-Security-Policy header: presence, unsafe-inline, unsafe-eval, wildcard sources and parsed directives.

Search the Apple App Store (any country store) and return matching apps with full store metadata: name, average rating, rating count, price, seller, genre, version and screenshots.

Repositories grouped by quality tier with counts.

Operator-reviewed DDG-operated model/artifact run using available backend cap...

Compare normalized public webpage text with a prior SHA-256 hash.

Look up DNS records for any domain: A, AAAA, CNAME, MX, NS, TXT, SOA, CAA, SRV, PTR, DS, DNSKEY, HTTPS, or ALL common types at once. Pass ?name=example.com&type=MX. An IP address with type=PTR does a reverse lookup. Uses DNS-over-HTTPS (Cloudflare 1.1.1.1) and reports DNSSEC validation and NXDOMAIN.

Convert any web page, PDF, Word (.docx), Excel (.xlsx/.xls), OpenDocument, CSV or XML URL to clean, LLM-ready Markdown, up to 10 MB: returns title, Markdown, links (web pages) and character count. url is the document address (https://...). For JavaScript-heavy sites use /markdown/rendered. Private addresses are blocked; failures are not charged. ?url=https://example.com/report.pdf

Premium research report on a library or API for coding agents: reads its current docs for your goal, checks version, safety and repository health, gathers what developers actually hit (Stack Overflow, the busiest open GitHub issues, Hacker News) and writes a cited brief: summary, how to do your goal with code, gotchas, risks. ?library=hono&goal=...

Check whether a source supports, contradicts, or gives insufficient information about a claim - a typed verdict with a real probability, not generated text. Try GET /verify/sample.