Objelio Immobiliensuche

de.objelio/immobiliensucheobjelio.destreamable-httpv1.0.0Scanned 49 minutes ago

Search apartments, houses and plots for sale or rent in Germany, listed by real estate agents.

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

Reads private data · 0
Reads text others write · 0
Can send data out · 0
1 finding

Anlyon alternative

2 of these tools change something. Run those as governed actions.

Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.

Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.

Import an OpenAPI spec →

Tools

Grouped by what each tool does, most consequential first. Open one for its reasons and full description; descriptions are the publisher's own words.

7 tools

Can't be undone 1Sends, pays, publishes or merges: once done, it cannot be taken back.Claude Code: ask

calculate_purchase_costsEstimates the additional costs of buying a property in Germany (Kaufnebenkosten): real estate transfer tax of the federal state, notary and land register as a usual range, and the …1 finding
Why it is in this group
- The name "calculate_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 "calculate_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 "calculate_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
Estimates the additional costs of buying a property in Germany (Kaufnebenkosten): real estate transfer tax of the federal state, notary and land register as a usual range, and the buyer's commission. Pass a listing_id from search_listings to use its price, postal code and commission, or pass price and state. An estimate, not tax or legal advice.
Annotations the server declares
- title: Calculate purchase costs
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false

Changes things 1Creates or changes something that can be changed back.Claude Code: ask

calculate_affordable_priceEstimates which purchase price a user can afford from equity and the monthly loan rate, after purchase costs of the federal state.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
Estimates which purchase price a user can afford from equity and the monthly loan rate, after purchase costs of the federal state. Ask the user for equity, monthly rate and, if known, interest rate and repayment; otherwise suggested values are used and marked. Returns a link to an Objelio search with this price as maximum. An estimate, not financing advice.
Annotations the server declares
- title: Calculate affordable price
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false

Only reads 5Looks things up and changes nothing.Show 5 read-only tools

compare_listingsCompares two or three listings from search_listings side by side: price, price per square meter, estimated purchase costs, area, rooms, building, energy certificate, features and a…No findings
Why it is in this group
- The name "compare_listings" says "compare": a word for reading.
Description, as the server wrote it
Compares two or three listings from search_listings side by side: price, price per square meter, estimated purchase costs, area, rooms, building, energy certificate, features and agent. Only stored data; missing information is "unbekannt". Returns a link to the same comparison on objelio.de, where the user can save the listings and contact the agents.
Annotations the server declares
- title: Compare listings
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
explain_criteriaShows how Objelio understands a search request in words, as structured criteria the user can check and correct before searching.No findings
Why it is in this group
- The name "explain_criteria" says "explain": a word for reading.
Description, as the server wrote it
Shows how Objelio understands a search request in words, as structured criteria the user can check and correct before searching. Does not search.
Annotations the server declares
- title: Explain search criteria
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
get_listingFull published details of one listing: description, features, energy certificate, commission (Courtage), the offering agent and the link to the listing page.No findings
Why it is in this group
- The name "get_listing" says "get": a word for reading.
Description, as the server wrote it
Full published details of one listing: description, features, energy certificate, commission (Courtage), the offering agent and the link to the listing page.
Annotations the server declares
- title: Get listing details
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
get_search_alert_linkRead-only.No findings
Why it is in this group
- The name "get_search_alert_link" says "get": a word for reading.
Description, as the server wrote it
Read-only. Returns a link to a page on objelio.de where the user can subscribe to e-mail alerts for these criteria: new matching listings and price reductions, at most one e-mail a day, unsubscribe with one click. Pass the same criteria as in search_listings (at least one, e.g. a location). The user enters the e-mail address on that page and confirms it by e-mail; do not ask for it in the chat. Nothing is saved until the user does so.
Annotations the server declares
- title: Get search alert link
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
search_listingsSearch published real estate listings on Objelio.No findings
Why it is in this group
- The name "search_listings" says "search": a word for reading.
Description, as the server wrote it
Search published real estate listings on Objelio. Pass structured criteria (preferred) or the user's request as text. Returns up to 10 listings with price, area, rooms, a fit per criterion (erfuellt = met, abweichend = slightly outside, unbekannt = no information) and a link to the listing page where the user can contact the agent.
Annotations the server declares
- title: Search listings
- 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.

Exfil surface

Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.

No private-data, untrusted-input, outbound path in this server alone: no tool is tagged private-data or untrusted-input or outbound.

Reads private data0: Reads files, mail, messages, databases, secrets, calendars or repositories.
Reads text others write0: Brings in text someone else can write: web pages, inbound email, messages, issues and comments.
Can send data out0: Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.

Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.

Findings

Matches of fixed checks, with the text they matched.

1 warn

Warncalculate_purchase_costs
The server marks "calculate_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 "calculate_purchase_costs" says "purchase": a word that usually means money moves, which cannot be taken back.
What this check looks for

History

Changes to its tool definitions and to its remote endpoint, newest first.

No change seen yet. Its tools are rescanned every day, and a remote endpoint is looked at once a week.

All changes to this server

Install

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

claude mcp add --transport http immobiliensuche https://www.objelio.de/mcp

claude mcp add --transport http immobiliensuche https://www.objelio.de/mcp

Run in a terminal.

Claude Code permissions

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

.claude/settings.json

{
  "permissions": {
    "allow": [
      "mcp__immobiliensuche__search_listings",
      "mcp__immobiliensuche__get_listing",
      "mcp__immobiliensuche__explain_criteria",
      "mcp__immobiliensuche__compare_listings",
      "mcp__immobiliensuche__get_search_alert_link"
    ],
    "ask": [
      "mcp__immobiliensuche__calculate_purchase_costs",
      "mcp__immobiliensuche__calculate_affordable_price"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as immobiliensuche. Review it before you use it.

Keep the decision: fail CI when the tools change, follow every change, or show a badge.

Pin in CI

Fail a build when the tools you reviewed are not the tools the server serves today.

curl -s "https://anlyon.dev/api/v1/servers/de.objelio/immobiliensuche/verify?hash=a285bc9ad90a8bedef2fbf7bc27e2618e39e584e402814ac84646930cbce7ca0" | jq -e '.changed == false'

Pinned hash a285bc9ad90a, from Oct 26, 2026, 10:17 UTC.

Watch

Get told when its tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/de.objelio/immobiliensuche/changes.xml

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Badge

[![anlyon.dev](https://anlyon.dev/badge/de.objelio/immobiliensuche.svg)](https://anlyon.dev/servers/de.objelio/immobiliensuche)

Source: MCP Registry. Synced Oct 26, 2026, 10:17 UTC.