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MCP live MCP 2025-11-25 http

databutler-provenance

drchriseames/databutler-provenance

Live trust signals for domains and software packages, computed per request from RDAP, npm and PyPI: registration age, registrar, nameservers, maintainers, linked repo, and homoglyph-aware typosquat resemblance to well-known brands and packages. Descriptive signals, not a verdict — use before trusting an unfamiliar domain or dependency. Free, no auth. From databutler.dev.

Watch this dependency Share evidence report
Uptime
100.0%
5 direct probes · 30d
Response
534ms
last probe
Tools
11
callable
Resources
0
readable
Prompts
0
available
Primary URL
https://databutler.dev/api/mcp
Score: 100/100
Handshake verified by our own probe.
pass Answers the MCP handshake 50/50
The handshake and the list calls succeeded on the primary URL.
pass Lists tools, resources or prompts 30/30
11 tools, 0 resources, 0 prompts returned.
pass 3 or more catalogue items 10/10
11 items in total; 3 or more earns these points.
pass Describes itself 10/10
373 characters; more than 30 earns these points.

Tools · 11

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-pen…

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, sibli…

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 …

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 p…

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 opera…

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, Fren…

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 …

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, an…

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-r…

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…

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_regress…

How to use

Claude Desktop or claude.ai: add a custom connector (Customize → Connectors; on Team and Enterprise plans an owner adds it under Organization settings → Connectors) with this server URL: https://databutler.dev/api/mcp

Cursor or Cline: add to your MCP config:

{
  "mcpServers": {
    "databutler-provenance": {
      "url": "https://databutler.dev/api/mcp",
      "transport": "http"
    }
  }
}