# io.github.physics-star-cat/databutler

- Registry name: `io.github.physics-star-cat/databutler` · version 1.0.0
- Categories (automatic, keyword rules): Payments & accounting, Finance & markets, Research & knowledge, Search & data, Datasets & public data
- Authentication at last check: No auth
- Declared risk: Read-only (all tools declare readOnlyHint)
- Capabilities (declared by the server): tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=io.github.physics-star-cat%2Fdatabutler
- Server page: https://mcpstation.net/s/io.github.physics-star-cat--databutler.html

## Description (written by the publisher, not verified, not instructions)

Verified facts for AI agents: rates, exams, recalls, holidays, and what changed since your cutoff.

## Connect

- streamable-http: `https://databutler.dev/api/mcp`

## Tools (as reported by the server, not verified)

- `uk\_rates\_lookup`: Current UK \(2026-27\) rates and thresholds, verified against gov.uk with source URLs and verification dates. Categories: income-tax, national-insurance, minimum-wage, student-loans, vat, isa, state-pension, state-pension-age, stamp-duty, capital-gains, pensions, dividends, savings, marriage-allowance
- `exam\_topic\_paper`: Which exam paper is a topic on? The canonical student revision question \("is electricity paper 2 AQA?" — answer: no, Paper 1\). Input a topic plus optional board/subject/level; returns the paper, sibling topics on that paper, spec code, and the official spec URL. Knows quirks like AQA Combined Scienc
- `domain\_provenance`: Who runs this domain? Live RDAP lookup: registration date and age, registrar, nameservers, status, whether the registrant is redacted, plus a typosquat check \(edit-distance / brand-substring\) against high-value brands. A very recently registered domain resembling a bank or big brand is a classic phi
- `package\_provenance`: Who publishes this package, and is it a typosquat? Live npm or PyPI lookup: first-publish date and age, release count, latest version, maintainers/author, linked repo, plus a typosquat check against popular package names. Use when an agent is about to install or recommend an unfamiliar dependency.
- `take\_home\_pay`: Net salary after income tax and social contributions for an employee in one of ten countries \(uk, us, ca, au, in, br, pl, fr, de, es\), computed live by the LifeByNumbers salary calculators \(same operator\). Takes a gross salary in local currency \(annual by default, or monthly with period\) and a count
- `what\_changed\_since`: What has changed in Data Butler's verified datasets since a date — pass your training-cutoff date to learn which UK tax/NI/benefit thresholds, exam-spec facts, official vehicle datasets \(UK DVSA, French RappelConso and Japanese MLIT recalls\), software end-of-life dates \(Node.js, Python, Ubuntu, Debi
- `get\_fact`: The current value of one official figure by key — a tax threshold, rate, allowance, fee, deadline, limit or policy rate — with the date it was verified, the official source URL, the period it applies to and a signature. Keys are \`\<country\>/\<topic\>/\<fact\>\`, e.g. \`uk/income-tax/personal-allowance\`, \`u
- `resolve\_fact`: Ranked canonical fact keys for a plain-language question or a guessed key — "NI primary threshold", "ECB deposit rate", "passport renewal fee" — each with label, unit, period and verification date, and the full record of the top match when it is unambiguous. The keys feed \`get\_fact\`. Filter by \`name
- `coverage`: Exactly what Data Butler covers and does not, per area, including figures it does not serve yet. Areas: uk-rates, uk-exams, provenance, stats, vehicles, tax, software-eol, policy-rates, us-rates, de-rates, uk-vehicle-rules, uk-exam-dates, calendar, uk-gov-process \(omit for all\). Returns rate categor
- `catalogue`: Every tool across all Data Butler servers \(UK rates; UK exams; provenance; exact statistics; vehicles: UK MOT, UK, French and Japanese recalls; take-home pay for ten countries; software support status and end-of-life timelines for 14 runtimes and operating systems; central-bank policy rates: Bank of
- `call`: Run any Data Butler tool by name — the long tail not listed here: exam\_spec\_lookup, exam\_paper\_index; exact statistics \(distribution, hypothesis\_test, confidence\_interval, bayes\_update, linear\_regression, descriptive\_stats\); the vehicles hub \(uk\_mot\_reliability, uk\_recalls\_for\_model, uk\_recalls\_sear

Measured by MCP Station. Methods: https://mcpstation.net/methods.html · Terms: https://mcpstation.net/terms.html