{"name":"io.github.physics-star-cat/databutler-facts","slug":"physics-star-cat-databutler-facts","title":null,"description":"Official thresholds, rates and fees by key, with source, verified date and signature.","url":"https://mcp.market/server/physics-star-cat-databutler-facts","rating":null,"grade":"A","score":91,"certified":false,"status":"active","category":"other","tags":[],"presence":{"score":23,"stars":0,"forks":0,"downloads_week":null,"last_push_at":"2026-10-13T09:00:50.000Z","license":null},"uptime":{"percent":100,"checks":28,"ok":28,"last_checked_at":"2026-11-04T08:15:44.275Z","last_ok_at":"2026-11-04T08:15:44.275Z","latency_ms":178},"claimed":false,"transport":"remote","callable_via_gateway":true,"default_price_micros":0,"repository":"https://github.com/physics-star-cat/databutler","website":"https://databutler.dev/api","version":"1.0.0","remotes":[{"type":"streamable-http","url":"https://databutler.dev/api/mcp/facts"}],"packages":[],"tools":[{"name":"get_fact","description":"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`, `uk/national-insurance/primary-threshold`, `us/social-security/wage-base`, `de/income-tax/grundfreibetrag`, `uk/bank-rate`, `eu/ecb/deposit-facility`, `uk/gov/passport-renewal-adult/fee-online-uk`. A loose key is resolved when unambiguous; otherwise the answer lists candidate keys. `max_age` (e.g. `30d`) marks the answer `stale` when the verification is older than that. Several keys separated by commas return a batch. Covers UK, US and German rates and thresholds, UK vehicle tax and MOT rules, UK government service fees, UK exam dates and central-bank policy rates; `coverage` lists the rest.","write_action":false,"price_micros":0,"input_schema":{"type":"object","properties":{"key":{"type":"string","description":"one key, or several separated by commas (max 50), e.g. uk/income-tax/personal-allowance"},"max_age":{"type":"string","description":"optional freshness bar: 30d, 12w, 6m, 1y or ISO 8601 (P30D)"},"as_of":{"type":"string","format":"date","description":"optional YYYY-MM-DD: the value in force that day"},"period":{"type":"string","description":"optional period label instead of as_of, e.g. 2025-26"}},"required":["key"]}},{"name":"resolve_fact","description":"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 `namespace` (`uk`, `us`, `de`, `eu`).","write_action":false,"price_micros":0,"input_schema":{"type":"object","properties":{"q":{"type":"string","description":"question or guessed key"},"namespace":{"type":"string","enum":["de","eu","uk","us"],"description":"optional jurisdiction filter"},"limit":{"type":"integer","minimum":1,"maximum":20,"description":"default 5"}},"required":["q"]}},{"name":"what_changed_since","description":"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, Debian, Android, iOS, macOS, Windows, Java, Go, Ruby, PHP, PostgreSQL, React — cycles that reached end of life or whose dates moved), central-bank policy rates (Bank of England, Fed, ECB), US federal tax thresholds (IRS inflation adjustments, Social Security wage base, retirement and HSA limits), German tax and social-insurance thresholds (Grundfreibetrag, Beitragsbemessungsgrenzen, Zusatzbeitrag, Mindestlohn, Kindergeld), UK vehicle tax (VED) rates and MOT rules, UK exam dates (results days, summer timetable paper dates, entry deadlines and late-fee dates, announced specification changes), calendar facts (public holidays for the UK, US, Germany and France; tax-year and daylight-saving rules for nine countries — new years published, holidays added or moved) and UK government service fees and rules (passports, ETA, Universal Credit, eVisa) changed after your knowledge ends. Each entry: from → to, effectiveFrom, official source, verifiedDate, and a maintainer note (e.g. which Budget). Areas: uk-rates, uk-exams, vehicles, software-eol, policy-rates, us-rates, de-rates, uk-vehicle-rules, uk-exam-dates, calendar, uk-gov-process, or all. Coverage starts 2026-08-31. The same changelog is published for humans at https://databutler.dev/changes, with feeds at https://databutler.dev/changes.rss and https://databutler.dev/changes.atom. Output is a Verified Changes protocol document (verified-changes/0.1, spec https://databutler.dev/protocol); an entry whose figure is a Verified Fact carries factKey for get_fact.","write_action":false,"price_micros":0,"input_schema":{"type":"object","properties":{"since":{"type":"string","description":"ISO date YYYY-MM-DD, e.g. your training cutoff"},"area":{"type":"string","enum":["uk-rates","uk-exams","vehicles","software-eol","policy-rates","us-rates","de-rates","uk-vehicle-rules","uk-exam-dates","calendar","uk-gov-process","all"],"description":"default all"}},"required":["since"]}}],"scan":{"score":91,"grade":"A","scanned_at":"2026-10-13T14:39:47.158Z","report":{"scannerVersion":"0.1.10","scannedAt":"2026-10-13T14:39:47.102Z","components":{"code":{"score":-1,"max":25,"notes":["remote-only server, no package to scan"]},"reliability":{"score":20,"max":20,"notes":["remote reachable in 397ms"]},"poisoning":{"score":15,"max":15,"notes":["3 tool descriptions checked"]},"auth":{"score":10,"max":15,"notes":["open endpoint, read-only tools"]},"maintenance":{"score":15,"max":15,"notes":["last push 0 days ago"]},"identity":{"score":8,"max":10,"notes":["registry namespace matches repository owner","GitHub account older than a year"]}},"findings":[],"inputs":{"probes":[{"url":"https://databutler.dev/api/mcp/facts","reachable":true,"authRequired":false,"latencyMs":397,"serverInfo":{"name":"databutler-facts","version":"1.1.0"}}],"packages":[],"repo":{"found":true,"owner":"physics-star-cat","repo":"databutler","archived":false,"pushedAt":"2026-10-13T09:00:50Z","stars":0,"forks":0,"openIssues":11,"ownerType":"User","ownerAvatarUrl":"https://avatars.githubusercontent.com/u/158219448?v=4","ownerCreatedAt":"2024-01-30T20:19:49Z"},"icon":{"url":"https://databutler.dev/icon.png","source":"site","width":512,"height":512},"presence":{"stars":0,"forks":0,"downloadsWeek":null,"license":null,"lastPushAt":"2026-10-13T09:00:50.000Z","score":23}}}},"grade_history":[],"reviews":[]}