ikeytz Einsatzgebiet-Karten

get_grenze

Read-only

WHAT: OSM Gebietspolygon for one Einsatzgebiet as GeoJSON FeatureCollection inside the MCP result. Lookup slug|plz|name. RETURNS hasPolygon, polygon, point, osmRelationId/osmWayId, via. USE when the agent needs the boundary geometry. DOES NOT replace get_geo_api (that remains the URL pointer). NEXT: get_lage, get_embed_map.

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.
`lat`	No
`lng`	No
`plz`	No
`via`	No	Fetch path hint
`hint`	No	Present when ok=false. Absolute URL or short recovery hint the agent should open or pass to another tool.
`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.
`point`	No	Point feature or null
`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.
`geo_api`	No
`polygon`	No	GeoJSON FeatureCollection (may be empty)
`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.
`osmWayId`	No	OSM way id if any
`hasPolygon`	No	true if polygon.features length > 0
`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.
`osmRelationId`	No	OSM relation id if any

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"
+    },
+    "geo_api": {
+      "format": "uri",
+      "type": "string"
+    },
+    "hasPolygon": {
+      "description": "true if polygon.features length > 0",
+      "type": "boolean"
+    },
+    "hint": {
+      "description": "Present when ok=false. Absolute URL or short recovery hint the agent should open or pass to another tool.",
+      "type": "string"
+    },
+    "lat": {
+      "type": "number"
+    },
+    "lng": {
+      "type": "number"
+    },
+    "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"
+    },
+    "osmRelationId": {
+      "description": "OSM relation id if any",
+      "type": [
+        "number",
+        "null"
+      ]
+    },
+    "osmWayId": {
+      "description": "OSM way id if any",
+      "type": [
+        "number",
+        "null"
+      ]
+    },
+    "plz": {
+      "type": "string"
+    },
+    "point": {
+      "description": "Point feature or null",
+      "type": [
+        "object",
+        "null"
+      ]
+    },
+    "polygon": {
+      "description": "GeoJSON FeatureCollection (may be empty)",
+      "type": "object"
+    },
+    "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"
+    },
+    "via": {
+      "description": "Fetch path hint",
+      "type": [
+        "string",
+        "null"
+      ]
+    }
+  },
+  "required": [
+    "ok",
+    "tool",
+    "attribution"
+  ],
+  "type": "object"
+}

AddedSep 3, 2026

TDQS

A4.2/5.0

Behavior4/5

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

With readOnlyHint=true already covering safety, the description adds meaningful behavior: it names the return fields (hasPolygon, polygon, point, osmRelationId/osmWayId, via) and clarifies the output is a GeoJSON FeatureCollection. There is no contradiction with annotations.

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?

The description is compact, front-loaded, and every labeled segment (WHAT, RETURNS, USE, DOES NOT, NEXT) earns its place. It packs purpose, return fields, usage trigger, and an exclusion into a few short lines.

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?

For a read-only lookup with an output schema, the description covers what the tool returns, when to use it, and what it does not replace. It does not state behavior when no parameters are supplied or when lookup fails, but the schema and output schema already carry much of that burden.

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 coverage is 100% and the schema already explains slug priority, PLZ first-match behavior, and name substring matching. The description only restates 'Lookup slug|plz|name', adding no new parameter semantics beyond the schema.

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?

The description identifies a specific verb+resource: returns the OSM Gebietspolygon for one Einsatzgebiet as a GeoJSON FeatureCollection, with lookup by slug|plz|name. It actively separates itself from get_geo_api by stating it is not the URL pointer, so the tool's unique purpose is clear.

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

Usage Guidelines4/5

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

It gives an explicit trigger ('USE when the agent needs the boundary geometry') and an explicit counter-rule ('DOES NOT replace get_geo_api'). It does not, however, explain when to prefer related siblings like get_lage/get_embed_map or find_by_plz, so the routing guidance is good but not exhaustive.

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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