the APIs

Every UK business answer, by category.

Open any API for the full picture — what it returns, real examples, the implementation guide and a README you can hand to your AI coding tool. No account needed to read any of it.

For agents: every page as Markdown at /apis.md, the OpenAPI file, a Postman collection, and an MCP server at meetkatalis.com/mcp (the company checks work with no key, one company at a time; your key as a Bearer token opens every API).

Company data

The verified foundation: who a UK business legally is, what it actually does, who controls it, and how sure we are — Companies House anchored, AI-summarised, accuracy-scored on every result.

UK Company EnrichmentA UK company name or domain → a verified profile in one call.2 cr→UK Company SearchA name or number → the right registered company, ranked by confidence.1 cr→Industry & SIC ClassifierA domain or name → its industry, SIC codes and what it does.2 cr→UK Company Public RecordEverything the public record says about a UK company, joined and read, in one call.3 cr→Ownership ChainWho controls the company, followed up the register to the parent nobody registered controls.2 cr→

Money & payment

Will they pay, and can they? A customer's own payment reports read from your side, the PPN 018 tests for public-sector bids, the statutory interest a late invoice is owed, the figures in its filed accounts, and what it has borrowed against.

Supplier Payment PracticesHow fast does this company pay its suppliers? From its own statutory reports, benchmarked.1 cr→Will They Pay Me On Time?A large customer's payment habits read from the supplier's side, with what its lateness is worth on your invoice.1 cr→PPN 018 Payment CheckA company's statutory payment report read against the PPN 018 tests and the Fair Payment Code tiers.1 cr→Late Payment CalculatorWhat a late-paid business invoice is owed: statutory interest at the right rate for each half-year, plus the fixed compensation.1 cr→Filed AccountsA company's latest filed accounts read into plain figures, this year and last, from Companies House's own tagged document.2 cr→Secured BorrowingA company's registered charges in plain English: how many outstanding, which lenders, what's secured, how recent.1 cr→

Scoring & decisioning

Not fields — answers. How strong is this business online, how well does it fit what YOU sell, is it showing signs of trouble, what public work has it won, and what's the honest angle for first contact. Grounded, explainable, never a black box.

UK Business ScoreA UK company or domain → an outside-in score, graded and explained.10 cr · 20 on free→Fit & Approach AssessmentA target + what YOU sell → fit score, real signals, and the angle.25 cr→Company Distress SignalsIs this customer or supplier in trouble? What the Companies House register shows, in one call.1 cr→Public Contracts WonWhat public-sector work has this company won? Every published award, totalled and read.1 cr→Tender MatchA UK business → the live public-sector contracts that fit what it does.3 cr→AI Visibility CheckDo AI assistants know this business exists? Asked cold, graded against the facts.5 cr→

Watch & deadlines

The reasons to come back: every change to a watched company as an event (signed webhooks and a feed), every date it has with a calendar feed, and the daily diffs of the sponsor and anti-money-laundering registers that nobody else keeps.

Change FeedTell me when this company changes. Watch lists, a change feed and signed webhooks.2 cr / company / month→Company DeadlinesEvery date a UK company has, in one call, and a calendar feed you subscribe to.1 cr→Sponsor Licence CheckIs this UK employer licensed to sponsor visas, at what rating, and what changed on the register.1 cr→HMRC AML Register CheckIs this business supervised by HMRC under the Money Laundering Regulations, for what, and has that changed.1 cr→

Compliance & documents

The public record, read for you: directors' ID verification and each person's own date, licences and registers, SRA-authorised law firms, CQC-registered care providers and their ratings, the charity register, the gender pay gap, a website's legal basics, a Carbon Reduction Plan against PPN 006, accessibility, Modern Slavery statements, Ofsted and CQC reports, charity accounts.

Director ID Verification CheckEvery director and PSC of a UK company: is a verified identity showing, and by when must it be?1 cr→Licences & Registers CheckIs this business registered for what it does? Waste carrier status, permits, enforcement, sanctions.2 cr→SRA Law Firm CheckIs this an SRA-authorised law firm, what kind, since when, and has that changed.1 cr→CQC Care Provider CheckIs this company a CQC-registered care provider, how are its services rated, and has that changed.1 cr→Charity Register CheckIs this a registered charity, is it in good standing, and what do its accounts say.1 cr→Gender Pay Gap Report CardAn employer's gender pay gap, read: the gaps, the pay quarters, the trend, against its sector.1 cr→Website Legal CheckThe legal basics a UK business website must have, checked the way a visitor sees them, and who's behind the site.4 cr · 8 on free→Carbon Reduction Plan CheckA supplier's published Carbon Reduction Plan read against the PPN 006 template, part by part.4 cr · 8 on free→Website Accessibility AuditA URL → grounded WCAG-flavoured findings, honestly scoped.2 cr · 4 on free→Modern Slavery Statement IntelligenceA company's Modern Slavery statement → structured, quality-scored JSON.4 cr · 8 on free→Ofsted Report-Card IntelligenceAn Ofsted report → structured grades, summary and next steps.4 cr · 8 on free→CQC Report-Card IntelligenceA CQC inspection report → structured ratings, summary and concerns.4 cr · 8 on free→Charity Report IntelligenceA trustees' annual report → a structured due-diligence read.4 cr · 8 on free→

Design & embeds

The engine in other shapes: generative art in your colours (the art behind our own blog), any website's brand kit, moving effects for any site, and the keyless logo endpoint anyone can call.

Generative Art22 art styles drawn in your colours: a crisp SVG cover for every post, product or page.1 cr→Brand KitOne website in, its brand out: colours, fonts, logo, voice, call to action, photos.2 cr→Effect EmbedsMoving backgrounds for any website, in your colours, from one line of script.3 cr→Company LogoA company's logo by domain. Free, no key.free→