Search arXiv papers, download full text, semantic search, citation graphs, and alerts via MCP.
Databutler is installed from its publisher's own source and answers where it runs, so this marketplace is not in the path of a single call. There is no address here to send one to, and a panel that pretended otherwise would be showing you an answer we made up. Install it and call it from your own client — the Installation tab has the entry for each one.
What it does
Verified facts for AI agents: rates, exams, recalls, holidays, and what changed since your cutoff.
Quickstart
# 1 — add it to Claude Code
claude mcp add --scope user --transport http databutler-mcp https://databutler.dev/api/mcp
# 2 — ask your agent for something these tools do
# uk_rates_lookup, exam_topic_paper, domain_provenance and 8 more
Databutler costs nothing on mcprush: there is no plan to choose here, no cap to set and nothing mcprush can bill you for.
Collected from a public index. Nobody has claimed this account, so nothing here was written by its author — claim it if it is yours.
Where are you running it?
Every route below installs the same thing and ends at the same approval screen. Nothing here runs on your machine and nothing runs on ours: this server answers at its publisher’s own address, and what you install is the connection straight to it.
This is a public server: it answers at its publisher’s own address and this marketplace is not in the path. Claude Code registers it in one command; --scope user makes it available in every project. The transport below is http, as the publisher's own manifest declares it.
claude mcp add --scope user --transport http databutler-mcp https://databutler.dev/api/mcpReconnect, or start a new session, and the tools appear in the model’s tool list.
One config entry pointing straight at the publisher’s own address — this marketplace is not in the path, and nothing from this listing executes on your machine.
11 tools, with what each one reads, writes and reaches shown before you agree — the same list on every route above. Read the tool surface.
Tool surface
What the model actually sees. Descriptions are diffed on every release — see version history.
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, statutory-sick-pay, statutory-parental-pay, child-benefit. Use whenever a user asks about UK incom
| Parameter | Type | Required | Notes |
|---|---|---|---|
| category | string | no | one of: income-tax, national-insurance, minimum-wage, student-loans, vat, isa, state-pension, state-pension-age, stamp-duty, capital-gains, pensions, dividends, savings, marriage-allowance, statutory- |
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 Science Trilogy Physics Paper 2 having no Space physics. Coverage: AQA GCSE Physics (8463); AQA GCSE Biolo
| Parameter | Type | Required | Notes |
|---|---|---|---|
| topic | string | yes | e.g. electricity, forces, ecology, organic chemistry |
| board | string | no | e.g. aqa |
| subject | string | no | e.g. physics, combined science |
| level | string | no | e.g. gcse |
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 phishing signal — but report it as a signal, not a conclusion.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| domain | string | yes | e.g. example.com |
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.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| ecosystem | string | yes | npm or pypi |
| name | string | yes | package name, e.g. express or requests |
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 country code, plus optional state and filingStatus for the US, province for Canada, region (england|scotl
| Parameter | Type | Required | Notes |
|---|---|---|---|
| country | string | yes | ISO 3166-1 alpha-2, lower case: uk, us, ca, au, in, br, pl, fr, de, es |
| gross | number | yes | gross salary in local currency, annual unless period is monthly, e.g. 50000 |
| period | string | no | period of gross (default annual); results always give both annual and monthly |
| state | string | no | US only: two-letter state code, e.g. TX (default CA) |
| filingStatus | string | no | US only (default single) |
| province | string | no | Canada only: two-letter province/territory code, e.g. BC (default ON) |
| region | string | no | UK only: scotland applies Scottish income tax bands (default england) |
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 o
| Parameter | Type | Required | Notes |
|---|---|---|---|
| since | string | yes | ISO date YYYY-MM-DD, e.g. your training cutoff |
| area | string | no | default all |
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/grundfreibet
| Parameter | Type | Required | Notes |
|---|---|---|---|
| key | string | yes | one key, or several separated by commas (max 50), e.g. uk/income-tax/personal-allowance |
| max_age | string | no | optional freshness bar: 30d, 12w, 6m, 1y or ISO 8601 (P30D) |
| as_of | string | no | optional YYYY-MM-DD: the value in force that day |
| period | string | no | optional period label instead of as_of, e.g. 2025-26 |
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).
| Parameter | Type | Required | Notes |
|---|---|---|---|
| q | string | yes | question or guessed key |
| namespace | string | no | optional jurisdiction filter |
| limit | integer | no | default 5 |
Exactly what Data Butler covers and does not, per area — call this before assuming something is unsupported. 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 categories and tax years, boards/subjects, package ecosystems, stats operations, vehicle datase
| Parameter | Type | Required | Notes |
|---|---|---|---|
| area | string | no | one of 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 |
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 England, Fed, ECB; US federal rates and thresholds (us_rates_lookup: income tax, Social Security, M
| Parameter | Type | Required | Notes |
|---|---|---|---|
| query | string | no | keyword filter, e.g. regression, exam, npm |
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_search, fr_recalls_for_model, fr_recalls_search, jp_recalls_for_model, jp_complaints_summary); software
| Parameter | Type | Required | Notes |
|---|---|---|---|
| tool | string | yes | tool name from catalogue |
| arguments | object | no | that tool's arguments |
- Every tool — any call limit is its publisher’s, not ours
- No card, and mcprush charges nothing for it
- Runs at its publisher’s own address — this marketplace is not in the path
- Nothing to cap, because mcprush bills nothing
What counts against your monthly calls
| Tool | Unit | Calls used | Out of the allowance |
|---|
Nothing here is billable: mcprush charges nothing to install Databutler or to call it, at any volume.
Two independent axes, because powerful and malicious are different questions. The grade is threat only. The capability level is blast radius, and it is never a penalty on the grade — it is priced as one subtract-only term in the score, where you can see it.
This listing is an address its publisher runs, and you connect to it directly — this marketplace is not in the path. The scanner reads packages and public source, and an address is neither: the repository linked on this page is where this record was collected from, not a copy of what the address serves, so it is not graded in its place. So there is no grade — not a withheld one, an unmeasured one.
Release history
This is an address its publisher runs: which release it serves is theirs to choose, so there is nothing here to pin. The history below is for reading; the current release on file is 1.0.0.
No release note was published with this version.
One review per account, from a signed-in account that does not publish this listing. Nothing else is asked — you can say what you think before you install it. Publishers can reply once per review, and a review can be edited or deleted by whoever wrote it.
Any signed-in account that does not publish Databutler can review it, once — before installing it or after. A review from an account that has installed it is marked as one.
Nobody has reviewed this listing. The rating on the card is the mean of the reviews written here and nothing else, so there is no rating until somebody writes the first — which takes a signed-in account that does not publish it, and nothing else.