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Starwell: World Data & Statistics

by starwell.dev · remote · local (npm) · no sign-in to list tools · v0.2.2 · published by dev.starwell

Statistics from 28 agencies: FRED, Eurostat, ECB, World Bank, OECD. Cited values, computed answers.

Deletes · 1Changes · 3
CompareRegistry entry

11 tools: 1 can delete or cancel things, 3 change things and 7 only read.

Scanned Oct 21, 2026

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http world-data-statistics https://starwell.dev/api/starwell/mcp

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

11 tools

Deletes or cancels 1Claude Code: deny
  • delete_monitorNo findings

    Why it is in this group

    • The name "delete_monitor" says "delete": a word for removing or ending something.
    • The server marks it destructive (destructiveHint: true).

    Annotations the server declares

    • readOnlyHint: false
    • destructiveHint: true
    • idempotentHint: true
Changes things 3Claude Code: ask
  • answerThe flagship: ask a natural-language question about the served official statistics.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    The flagship: ask a natural-language question about the served official statistics. Returns a COMPUTED answer (real Python runs in a sandbox over the verified store, nothing is estimated by a model), the Plotly chart, the Python code, citations to the official tables, and a verification badge per series. CROSS-SOURCE: one question may join series from DIFFERENT agencies, e.g. unemployment from the US BLS, Statistics Canada and the UK ONS in a single call, for correlations, ratios, and like-for-like comparison. How many series one question may join is set by the caller's plan; asking for more returns a series_limit error naming that cap. Returns a refusal when no served series can answer. Takes 10-40 seconds. Requires a free API key (create at /account on the Starwell host; pass Authorization: Bearer dlk_... or set STARWELL_API_KEY on the starwell-mcp bridge). Keyless calls return key_required.

    Annotations the server declares

    • readOnlyHint: false
  • create_monitorCreate a monitor: when the store's refresh lands a new period or a revised value for the series, a series.updated webhook fires to your URL with the new value, verification status,…No findings

    Why it is in this group

    • The name "create_monitor" says "create": a word for a change.
    Description, as the server wrote it
    Create a monitor: when the store's refresh lands a new period or a revised value for the series, a series.updated webhook fires to your URL with the new value, verification status, and citation. Requires an API key (free with an account at /account); webhook must be https. Manage with list_monitors / delete_monitor.

    Annotations the server declares

    • readOnlyHint: false
    • idempotentHint: true
  • deep_analysisThe moat: a PLANNED multi-section report on a question.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    The moat: a PLANNED multi-section report on a question. The engine designs 3-4 orthogonal analyses (trend, statistics, outliers, cross-series relationships), runs real Python for each in the sandbox over the verified store, and synthesizes one decision-ready report. Every number computed, every series cited and verification-badged. Sections can join series from DIFFERENT agencies in one report, up to the caller's plan width; over it, the call returns a series_limit error naming that cap. Slower than answer (60-180 seconds), so use it for "analyze", "break down", "give me a full picture" asks; use the answer tool for a single direct question. Requires a free API key (create at /account on the Starwell host; pass Authorization: Bearer dlk_... or set STARWELL_API_KEY on the starwell-mcp bridge). Keyless calls return key_required.

    Annotations the server declares

    • readOnlyHint: false
Only reads 7Claude Code: allow
  • get_observationsObservation values for one series.No findings

    Why it is in this group

    • The name "get_observations" says "get": a word for reading.
    Description, as the server wrote it
    Observation values for one series. Every value carries provenance (the exact source URL it came from, retrieval time, connector version) and the envelope carries the series verification status + citation. Defaults to the latest 60 points; use start/end (YYYY-MM-DD) or latest to control the window. Pass asOf for a point-in-time read: the values as Starwell's store held them on that date, before any later revision (available from the series' first ingest forward).

    Annotations the server declares

    • readOnlyHint: true
  • get_seriesFull metadata for one series: indicator, unit, frequency, geography, coverage, its VERIFICATION STATUS (passing/stale/failing/unverified from golden-value + freshness checks agains…No findings

    Why it is in this group

    • The name "get_series" says "get": a word for reading.
    Description, as the server wrote it
    Full metadata for one series: indicator, unit, frequency, geography, coverage, its VERIFICATION STATUS (passing/stale/failing/unverified from golden-value + freshness checks against the live source), recent check records, and the citation to the official table.

    Annotations the server declares

    • readOnlyHint: true
  • get_series_statsLatest value, previous, all-time min/max, mean, and change vs the previous period and vs a year ago — computed over the verified store, with the citation attached.No findings

    Why it is in this group

    • The name "get_series_stats" says "get": a word for reading.
    Description, as the server wrote it
    Latest value, previous, all-time min/max, mean, and change vs the previous period and vs a year ago — computed over the verified store, with the citation attached. The cheap way to answer "what is it now and how has it moved" without a full analysis run.

    Annotations the server declares

    • readOnlyHint: true
  • list_datasetsList the datasets (official releases/tables) available in one source, with coverage dates and links to the official table pages.No findings

    Why it is in this group

    • The name "list_datasets" says "list": a word for reading.
    Description, as the server wrote it
    List the datasets (official releases/tables) available in one source, with coverage dates and links to the official table pages.

    Annotations the server declares

    • readOnlyHint: true
  • list_monitorsMonitors on your API key, with delivery health (last fired, failures, active).No findings

    Why it is in this group

    • The name "list_monitors" says "list": a word for reading.
    Description, as the server wrote it
    Monitors on your API key, with delivery health (last fired, failures, active).

    Annotations the server declares

    • readOnlyHint: true
  • list_sourcesList the official statistical sources served by this data layer (e.g.No findings

    Why it is in this group

    • The name "list_sources" says "list": a word for reading.
    Description, as the server wrote it
    List the official statistical sources served by this data layer (e.g. Statistics Canada, FRED), with dataset/series counts, cadence notes, and terms links. Start here to see what exists.

    Annotations the server declares

    • readOnlyHint: true
  • search_catalogFind series across ALL sources in one call: case-insensitive search over series ids, indicator names, geographies, and dataset titles (e.g.No findings

    Why it is in this group

    • The name "search_catalog" says "search": a word for reading.
    Description, as the server wrote it
    Find series across ALL sources in one call: case-insensitive search over series ids, indicator names, geographies, and dataset titles (e.g. "unemployment canada", "10-year treasury", "CPI"). Returns candidate series with units, coverage, verification status, and license, plus datasetMatches from the wider dataset index — datasets whose series can be requested by source-native id and are fetched from the official source on first call. The fastest path from a question to the exact series id to fetch or pin in the answer tool.

    Annotations the server declares

    • readOnlyHint: true

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 0.2.2. Values in angle brackets are yours to fill in.

claude mcp add --transport http world-data-statistics https://starwell.dev/api/starwell/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__world-data-statistics__list_sources",
      "mcp__world-data-statistics__search_catalog",
      "mcp__world-data-statistics__list_datasets",
      "mcp__world-data-statistics__get_series",
      "mcp__world-data-statistics__get_observations",
      "mcp__world-data-statistics__get_series_stats",
      "mcp__world-data-statistics__list_monitors"
    ],
    "ask": [
      "mcp__world-data-statistics__create_monitor",
      "mcp__world-data-statistics__answer",
      "mcp__world-data-statistics__deep_analysis"
    ],
    "deny": [
      "mcp__world-data-statistics__delete_monitor"
    ]
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as world-data-statistics. Review it before you use it.