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flatin.es — new builds and local data in Spain

by flatin.es · remote · no sign-in to list tools · v1.0.0 · published by es.flatin

New-build homes on sale in Spain, buying costs, non-resident tax and local open data.

Final · 1Changes · 3
CompareRegistry entry

5 tools: 1 do something that can't be undone, 3 change things and 1 only read.

Scanned Oct 21, 2026

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

claude mcp add --transport http spain-property https://flatin.es/mcp

Findings

Matches of fixed checks, with the text they matched.

1 warn
  • Warnpurchase_costs

    The server marks "purchase_costs" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".

    Matched text

    annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "purchase_costs" says "purchase": a word that usually means money moves, which cannot be taken back.

    What this check looks for

Tools

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

5 tools

Can't be undone 1Claude Code: ask
  • purchase_costsTaxes and fees of buying a home in Spain: VAT + stamp duty (AJD) for a new build or transfer tax (ITP) for a resale at the general rate of the tax territory, plus notary and land r…1 finding

    Why it is in this group

    • The name "purchase_costs" says "purchase": a word that usually means money moves, which cannot be taken back.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    Findings

    • Warn

      The server marks "purchase_costs" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".

      Matched text

      annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "purchase_costs" says "purchase": a word that usually means money moves, which cannot be taken back.

      What this check looks for
    Description, as the server wrote it
    Taxes and fees of buying a home in Spain: VAT + stamp duty (AJD) for a new build or transfer tax (ITP) for a resale at the general rate of the tax territory, plus notary and land registry by the official scales. Every line cites its law, article and the date it was checked. An estimate, not tax advice.

    Annotations the server declares

    • title: Purchase costs of a home in Spain
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
Changes things 3Claude Code: ask
  • ibi_rateYearly IBI urbana rate (% of cadastral value) of a municipality, with year, provisional flag, source (Ministerio de Hacienda) and the flatin.es page.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.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Yearly IBI urbana rate (% of cadastral value) of a municipality, with year, provisional flag, source (Ministerio de Hacienda) and the flatin.es page.

    Annotations the server declares

    • title: IBI property-tax rate of a Spanish municipality
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • newbuilds_in_placeNew-build developments on sale in a municipality, buyer zone or province of the flatin.es catalogue: at most 25 per call, sorted by name, no pagination — the full list is on the li…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.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    New-build developments on sale in a municipality, buyer zone or province of the flatin.es catalogue: at most 25 per call, sorted by name, no pagination — the full list is on the linked flatin.es page. Facts are the developer's own, latest check only, with attribution.

    Annotations the server declares

    • title: New builds on sale in a place (Spain)
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • non_resident_taxYearly IRNR of a non-resident owner of a Spanish home: imputed income (1.1 % or 2 % of the cadastral value for days not let) and rental income (EU/EEA: 19 % net of expenses; others…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.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Yearly IRNR of a non-resident owner of a Spanish home: imputed income (1.1 % or 2 % of the cadastral value for days not let) and rental income (EU/EEA: 19 % net of expenses; others: 24 % on gross rent). Every line cites its law and check date; rules pending validation (RDL 29/2026) are listed, not applied. An estimate, not tax advice.

    Annotations the server declares

    • title: Spanish non-resident income tax (IRNR, modelo 210)
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
Only reads 1Claude Code: allow
  • compare_placesSide-by-side latest figures for 2–4 municipalities (provinces of Alicante, Málaga, Valencia, Murcia) or buyer zones: housing prices (MIVAU), rent (SERPAVI), IBI, population, income…No findings

    Why it is in this group

    • The name "compare_places" says "compare": a word for reading.
    Description, as the server wrote it
    Side-by-side latest figures for 2–4 municipalities (provinces of Alicante, Málaga, Valencia, Murcia) or buyer zones: housing prices (MIVAU), rent (SERPAVI), IBI, population, income, tourist lets, foreigners, air quality and more — at most 12 indicators per call. Each figure has its unit, period, level (municipality, or province when the place has none), source credit and date, and station or point of interest with distance. Only places whose flatin.es page is published get figures; every answer links the flatin.es pages.

    Annotations the server declares

    • title: Compare 2–4 places in Spain on local data
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false

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 1.0.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http spain-property https://flatin.es/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__spain-property__compare_places"
    ],
    "ask": [
      "mcp__spain-property__newbuilds_in_place",
      "mcp__spain-property__ibi_rate",
      "mcp__spain-property__purchase_costs",
      "mcp__spain-property__non_resident_tax"
    ],
    "deny": []
  }
}

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 spain-property. Review it before you use it.