ikeytz Einsatzgebiet-Karten

Get Lage

get_lage

Read-only

WHAT: Returns Lage (location description) prose for one Einsatzgebiet Visitenkarte. Lookup slug|plz|name. RETURNS slug, name, lage. USE for human-readable geography prose. Prefer get_geschichte for place history; prefer get_service_area for the full point card/embed. DOES NOT return polygons.

Input Schema

TableJSON Schema

Name	Required	Description
`plz`	No	German postcode (PLZ). Several Gebiete can share one PLZ (e.g. 71638). For single lookup first match wins; use find_by_plz for all matches.
`name`	No	German place name substring (case-insensitive, umlauts ok), e.g. Grünbühl, Pattonville. Used when slug/plz omitted.
`slug`	No	URL slug of one of the 52 Einsatzgebiete, e.g. pattonville, bietigheim-bissingen, walheim, gruenbuehl. Matches https://maps.ikeytz.com/{slug}. Lookup order when combined with plz/name: slug first.

Output Schema

TableJSON Schema

Name	Required	Description
`ok`	Yes	true = use summary, canonicalUrl, and extra keys. false = do not invent data; read error + hint and retry with valid args or open hint.
`hint`	No	Present when ok=false. Absolute URL or short recovery hint the agent should open or pass to another tool.
`lage`	No	Lage prose (may be empty)
`name`	No
`slug`	No
`tool`	Yes	Echo of the tool name that produced this object (e.g. get_service_area).
`error`	No	Present when ok=false. Codes include: unknown_place, unknown_discovery, unknown_doc, q_required, plz_required, coords_required, outside_service_area, url_required, not_maps_host, bad_url, path_or_url_required, serp_not_found, slug_or_coords_required, path_required.
`locale`	No	Locale actually used for URLs. maps is German-only: always de (MAPS-E8 — no /en on maps). Requested non-de is ignored; payload locale=de.
`related`	No	Always includes https://maps.ikeytz.com/llms.txt.
`summary`	No	Primary text for the model. For discovery tools this is the file window. For list tools a compact one-liner. Quote with attribution.
`attribution`	Yes	Required citation: 'Quelle: Schlüsseldienst Ludwigsburg ikeytz (ikeytz.com) · ai-train=no · https://maps.ikeytz.com/.well-known/ai.txt'
`canonicalUrl`	No	Best URL to show the user: https://maps.ikeytz.com… page, public embed JSON, tel:+49…, mailto:…, https://wa.me/…, or a www pointer. Prefer this over constructing URLs.

Schema Changelog

Changes observed during successful MCP inspections.

Changed4 schema fields changedSep 3, 2026

addedInput schema / properties / name / description

Added value: +"German place name substring (case-insensitive, umlauts ok), e.g. Grünbühl, Pattonville. Used when slug/plz omitted."

addedInput schema / properties / plz / description

Added value: +"German postcode (PLZ). Several Gebiete can share one PLZ (e.g. 71638). For single lookup first match wins; use find_by_plz for all matches."

addedInput schema / properties / slug / description

Added value: +"URL slug of one of the 52 Einsatzgebiete, e.g. pattonville, bietigheim-bissingen, walheim, gruenbuehl. Matches https://maps.ikeytz.com/{slug}. Lookup order when combined with plz/name: slug first."

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "additionalProperties": true,
+  "description": "Always the same envelope. tools/call returns content[0].text = summary (or JSON) AND structuredContent = this object. On success ok=true with summary + canonicalUrl + extra fields. On failure ok=false with error (snake_case code) and hint (recovery URL). Never writes, never submits forms, never books. Attribution must be kept when quoting. Policy: ai-input yes with attribution; ai-train=no. Host is maps.ikeytz.com (geo/Einsatzgebiet). Prices/FAQ/legal HTML live on www — maps only points.",
+  "properties": {
+    "attribution": {
+      "description": "Required citation: 'Quelle: Schlüsseldienst Ludwigsburg ikeytz (ikeytz.com) · ai-train=no · https://maps.ikeytz.com/.well-known/ai.txt'",
+      "type": "string"
+    },
+    "canonicalUrl": {
+      "description": "Best URL to show the user: https://maps.ikeytz.com… page, public embed JSON, tel:+49…, mailto:…, https://wa.me/…, or a www pointer. Prefer this over constructing URLs.",
+      "type": "string"
+    },
+    "error": {
+      "description": "Present when ok=false. Codes include: unknown_place, unknown_discovery, unknown_doc, q_required, plz_required, coords_required, outside_service_area, url_required, not_maps_host, bad_url, path_or_url_required, serp_not_found, slug_or_coords_required, path_required.",
+      "type": "string"
+    },
+    "hint": {
+      "description": "Present when ok=false. Absolute URL or short recovery hint the agent should open or pass to another tool.",
+      "type": "string"
+    },
+    "lage": {
+      "description": "Lage prose (may be empty)",
+      "type": "string"
+    },
+    "locale": {
+      "description": "Locale actually used for URLs. maps is German-only: always de (MAPS-E8 — no /en on maps). Requested non-de is ignored; payload locale=de.",
+      "enum": [
+        "de"
+      ],
+      "type": "string"
+    },
+    "name": {
+      "type": "string"
+    },
+    "ok": {
+      "description": "true = use summary, canonicalUrl, and extra keys. false = do not invent data; read error + hint and retry with valid args or open hint.",
+      "type": "boolean"
+    },
+    "related": {
+      "description": "Always includes https://maps.ikeytz.com/llms.txt.",
+      "items": {
+        "format": "uri",
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "slug": {
+      "type": "string"
+    },
+    "summary": {
+      "description": "Primary text for the model. For discovery tools this is the file window. For list tools a compact one-liner. Quote with attribution.",
+      "type": "string"
+    },
+    "tool": {
+      "description": "Echo of the tool name that produced this object (e.g. get_service_area).",
+      "type": "string"
+    }
+  },
+  "required": [
+    "ok",
+    "tool",
+    "attribution"
+  ],
+  "type": "object"
+}

First observedSep 1, 2026

TDQS

A4.4/5.0

Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint=true, so the safety profile is covered and the description's marginal contribution is the negative disclosure 'DOES NOT return polygons' plus the promised return fields (slug, name, lage). It does not describe empty-result/error behavior or rate limits, which would be the remaining behavioral gaps for a lookup tool.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Capsule format (WHAT / RETURNS / USE / DOES NOT) is maximally front-loaded: the one-line WHAT comes first, routing second, exclusions last. Every clause carries new information; nothing is padding.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

With an output schema present, the description needn't enumerate return values, and it correctly focuses on lookup keys, routing, and scope limits. It is nearly complete, missing only what an agent should expect on no-match or when multiple Gebiete share a PLZ, which is left to the schema.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so the schema already explains each of slug/plz/name, including the 'slug first' lookup order and the find_by_plz escalation. The description's 'Lookup slug|plz|name' restates rather than extends that, so the baseline 3 applies.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb and resource ('Returns Lage (location description) prose for one Einsatzgebiet Visitenkarte') and pins the lookup keys. It goes further by naming what it does not do ('DOES NOT return polygons') and naming the siblings it is not (get_geschichte, get_service_area), so an agent can separate it from adjacent tools immediately.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The USE line states the positive condition ('human-readable geography prose') and then gives explicit routing rules: prefer get_geschichte for place history, prefer get_service_area for the full point card/embed. That is a when-to-use plus two named alternatives, which is the strongest form of guidance.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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