pegel

Hochwasserlage

get_flood_situation

Read-onlyIdempotent

Current flood situation: stations with an active LHP flood class (1 small … 4 very large), optionally per federal state. Every result names the data provider in sourceNotice (search and flood situation: sourceNotices, keyed by sourceNoticeId); show that notice with any value, class or forecast you pass on, and the licence terms of the API require it.

Input Schema

Name	Required	Description	Default
`locale`	No	Language for classification text (headline/description); defaults to German
`federalState`	No	ISO 3166-2 code, e.g. DE-BY

Output Schema

Name	Required	Description
`stations`	Yes
`countByClass`	Yes	Station count per flood class name
`sourceNotices`	Yes	Distinct notices of the listed gauges by key; a gauge names its own in sourceNoticeId
`stationsWithFlood`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

Changed4 schema fields changedOct 12, 2026

addedOutput schema / properties / sourceNotices

Added value: +{
+  "additionalProperties": {
+    "additionalProperties": {},
+    "properties": {
+      "fetchedAt": {
+        "anyOf": [
+          {
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "description": "When the values were fetched, UTC"
+      },
+      "form": {
+        "description": "full-only: show the full text, never shorten; short-allowed",
+        "type": "string"
+      },
+      "id": {
+        "description": "Key of the source record",
+        "type": "string"
+      },
+      "licence": {
+        "anyOf": [
+          {
+            "additionalProperties": {},
+            "properties": {},
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "parts": {
+        "items": {
+          "additionalProperties": {},
+          "properties": {
+            "fetchedAt": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ],
+              "description": "When the values were fetched, UTC"
+            },
+            "form": {
+              "description": "full-only: show the full text, never shorten; short-allowed",
+              "type": "string"
+            },
+            "id": {
+              "description": "Key of the source record",
+              "type": "string"
+            },
+            "licence": {
+              "anyOf": [
+                {
+                  "additionalProperties": {},
+                  "properties": {},
+                  "type": "object"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "permissionBasis": {
+              "type": "string"
+            },
+            "rightsHolder": {
+              "type": "string"
+            },
+            "sourceName": {
+              "type": "string"
+            },
+            "sourceUrl": {
+              "type": "string"
+            },
+            "stampedAt": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ],
+              "description": "The provider's own time stamp, UTC"
+            },
+            "stationLink": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ],
+              "description": "Origin page of this gauge where one is required"
+            },
+            "text": {
+              "description": "The full notice as plain text",
+              "type": "string"
+            },
+            "textShort": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ],
+              "description": "Shortened notice; null where it must never be shortened"
+            }
+          },
+          "required": [
+            "id",
+            "form",
+            "permissionBasis",
+            "licence",
+            "sourceName",
+            "sourceUrl",
+            "rightsHolder",
+            "fetchedAt",
+            "stampedAt",
+            "stationLink",
+            "text",
+            "textShort"
+          ],
+          "type": "object"
+        },
+        "type": "array"
+      },
+      "permissionBasis": {
+        "type": "string"
+      },
+      "rightsHolder": {
+        "type": "string"
+      },
+      "sourceName": {
+        "type": "string"
+      },
+      "sourceUrl": {
+        "type": "string"
+      },
+      "stampedAt": {
+        "anyOf": [
+          {
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "description": "The provider's own time stamp, UTC"
+      },
+      "stationLink": {
+        "anyOf": [
+          {
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "description": "Origin page of this gauge where one is required"
+      },
+      "text": {
+        "description": "The full notice as plain text",
+        "type": "string"
+      },
+      "textShort": {
+        "anyOf": [
+          {
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "description": "Shortened notice; null where it must never be shortened"
+      }
+    },
+    "required": [
+      "id",
+      "form",
+      "permissionBasis",
+      "licence",
+      "sourceName",
+      "sourceUrl",
+      "rightsHolder",
+      "fetchedAt",
+      "stampedAt",
+      "stationLink",
+      "text",
+      "textShort",
+      "parts"
+    ],
+    "type": "object"
+  },
+  "description": "Distinct notices of the listed gauges by key; a gauge names its own in sourceNoticeId",
+  "propertyNames": {
+    "type": "string"
+  },
+  "type": "object"
+}

addedOutput schema / properties / stations / items / properties / sourceNoticeId

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "Key into sourceNotices; the flood class is delivered under this notice"
+}

changedOutput schema / properties / stations / items / required

Previous value: -[
-  "id",
-  "name",
-  "water",
-  "federalState",
-  "lhpClass",
-  "lhpClassName"
-]New value: +[
+  "id",
+  "name",
+  "water",
+  "federalState",
+  "lhpClass",
+  "lhpClassName",
+  "sourceNoticeId"
+]

changedOutput schema / required

Previous value: -[
-  "stationsWithFlood",
-  "countByClass",
-  "stations"
-]New value: +[
+  "stationsWithFlood",
+  "countByClass",
+  "sourceNotices",
+  "stations"
+]

Changed1 schema field changedSep 23, 2026

addedInput schema / properties / locale

Added value: +{
+  "description": "Language for classification text (headline/description); defaults to German",
+  "enum": [
+    "de",
+    "en"
+  ],
+  "type": "string"
+}

First observedSep 11, 2026

TDQS

A3.9/5.0

Behavior4/5

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

Annotations already establish read-only, idempotent, open-world behavior, so the bar is lower, and the description still adds real value: a licence-mandated attribution obligation (the sourceNotice must be shown with any value, class or forecast passed on) and the fact that notices are keyed by sourceNoticeId. It omits only secondary traits such as result ordering or handling of an empty result set.

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

Conciseness4/5

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

Opens with the purpose, then moves to the attribution requirement — the right front-loading. The sourceNotice sentence is long and slightly clause-heavy, but every element (keyed by sourceNoticeId, must be shown, licence requirement) carries actionable information.

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?

Annotations cover the safety profile, the output schema covers return values, and both parameters are schema-documented, so the description only needed to add scope and the attribution constraint — which it does. Minor gaps remain around empty results and ordering, but nothing essential for correct invocation is missing.

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?

With 100% schema description coverage, the schema already documents both locale and federalState, so the baseline is 3. The description adds the notion that federalState acts as an optional narrowing filter, but contributes nothing about the locale enum or the ISO 3166-2 format beyond what the schema states.

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+resource ('Current flood situation'), the exact scope (stations with an active LHP flood class 1–4) and the optional federal-state filter. Among siblings like get_readings, get_forecast and get_weather, an agent can tell immediately that this one returns flood-class warnings rather than raw measurements or forecasts.

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

Usage Guidelines3/5

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

The description conveys the retrieval context (current flood situation, optionally narrowed by federal state) but never says when to prefer this over get_forecast or get_readings, nor does it state exclusions such as 'no forecast data here'. Usage is implied by the resource name rather than explicitly guided.

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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