Dogceo

List Breeds

list_breeds

Read-onlyIdempotent

List all available dog breeds and sub-breeds. Returns breed names and varieties. Use to explore breeds or validate a breed name before fetching images.

Input Schema

TableJSON Schema

Name	Required	Description	Default
No arguments

Output Schema

TableJSON Schema

Name	Required	Description	Default
`breeds`	Yes	Map of breed names to arrays of sub-breeds

Schema Changelog

Changes observed during successful MCP inspections.

Changed2 schema fields changedMay 24, 2026

addedInput schema / examples
```
Added value: +[
+  {}
+]
```

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "properties": {
+    "breeds": {
+      "additionalProperties": {
+        "items": {
+          "type": "string"
+        },
+        "type": "array"
+      },
+      "description": "Map of breed names to arrays of sub-breeds",
+      "type": "object"
+    }
+  },
+  "required": [
+    "breeds"
+  ],
+  "type": "object"
+}

Changed2 schema fields changedMay 13, 2026

removedInput schema / examples

Removed value: -[
-  {
-    "page": 1
-  },
-  {
-    "page": 2
-  }
-]

changedOutput schema / (root)

Previous value: -{
-  "properties": {
-    "breeds": {
-      "description": "Array of dog breeds on this page",
-      "items": {
-        "properties": {
-          "description": {
-            "description": "Breed description",
-            "type": "string"
-          },
-          "female_weight_kg": {
-            "description": "Female weight range",
-            "properties": {
-              "max": {
-                "description": "Maximum weight in kg",
-                "type": "number"
-              },
-              "min": {
-                "description": "Minimum weight in kg",
-                "type": "number"
-              }
-            },
-            "required": [
-              "min",
-              "max"
-            ],
-            "type": "object"
-          },
-          "hypoallergenic": {
-            "description": "Whether breed is hypoallergenic",
-            "type": "boolean"
-          },
-          "id": {
-            "description": "Unique breed identifier",
-            "type": "string"
-          },
-          "life_span_years": {
-            "description": "Life span range",
-            "properties": {
-              "max": {
-                "description": "Maximum lifespan in years",
-                "type": "number"
-              },
-              "min": {
-                "description": "Minimum lifespan in years",
-                "type": "number"
-              }
-            },
-            "required": [
-              "min",
-              "max"
-            ],
-            "type": "object"
-          },
-          "male_weight_kg": {
-            "description": "Male weight range",
-            "properties": {
-              "max": {
-                "description": "Maximum weight in kg",
-                "type": "number"
-              },
-              "min": {
-                "description": "Minimum weight in kg",
-                "type": "number"
-              }
-            },
-            "required": [
-              "min",
-              "max"
-            ],
-            "type": "object"
-          },
-          "name": {
-            "description": "Breed name",
-            "type": "string"
-          }
-        },
-        "required": [
-          "id",
-          "name",
-          "description",
-          "life_span_years",
-          "male_weight_kg",
-          "female_weight_kg",
-          "hypoallergenic"
-        ],
-        "type": "object"
-      },
-      "type": "array"
-    },
-    "page": {
-      "description": "Page number requested",
-      "type": "number"
-    },
-    "total": {
-      "description": "Total count of breeds available",
-      "type": [
-        "number",
-        "null"
-      ]
-    }
-  },
-  "required": [
-    "page",
-    "total",
-    "breeds"
-  ],
-  "type": "object"
-}New value: +null

Changed1 schema field changedMay 8, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "properties": {
+    "breeds": {
+      "description": "Array of dog breeds on this page",
+      "items": {
+        "properties": {
+          "description": {
+            "description": "Breed description",
+            "type": "string"
+          },
+          "female_weight_kg": {
+            "description": "Female weight range",
+            "properties": {
+              "max": {
+                "description": "Maximum weight in kg",
+                "type": "number"
+              },
+              "min": {
+                "description": "Minimum weight in kg",
+                "type": "number"
+              }
+            },
+            "required": [
+              "min",
+              "max"
+            ],
+            "type": "object"
+          },
+          "hypoallergenic": {
+            "description": "Whether breed is hypoallergenic",
+            "type": "boolean"
+          },
+          "id": {
+            "description": "Unique breed identifier",
+            "type": "string"
+          },
+          "life_span_years": {
+            "description": "Life span range",
+            "properties": {
+              "max": {
+                "description": "Maximum lifespan in years",
+                "type": "number"
+              },
+              "min": {
+                "description": "Minimum lifespan in years",
+                "type": "number"
+              }
+            },
+            "required": [
+              "min",
+              "max"
+            ],
+            "type": "object"
+          },
+          "male_weight_kg": {
+            "description": "Male weight range",
+            "properties": {
+              "max": {
+                "description": "Maximum weight in kg",
+                "type": "number"
+              },
+              "min": {
+                "description": "Minimum weight in kg",
+                "type": "number"
+              }
+            },
+            "required": [
+              "min",
+              "max"
+            ],
+            "type": "object"
+          },
+          "name": {
+            "description": "Breed name",
+            "type": "string"
+          }
+        },
+        "required": [
+          "id",
+          "name",
+          "description",
+          "life_span_years",
+          "male_weight_kg",
+          "female_weight_kg",
+          "hypoallergenic"
+        ],
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "page": {
+      "description": "Page number requested",
+      "type": "number"
+    },
+    "total": {
+      "description": "Total count of breeds available",
+      "type": [
+        "number",
+        "null"
+      ]
+    }
+  },
+  "required": [
+    "page",
+    "total",
+    "breeds"
+  ],
+  "type": "object"
+}

Changed1 schema field changedMay 6, 2026

addedInput schema / examples

Added value: +[
+  {
+    "page": 1
+  },
+  {
+    "page": 2
+  }
+]

First observedApr 14, 2026

TDQS

A4.3/5.0

Behavior3/5

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

The description adds that it 'returns breed names and varieties,' which is a light behavioral disclosure about the return content. Annotations already declare readOnlyHint=true and idempotentHint=true, so the safety profile is covered. The description does not contradict annotations, but it does not add deeper context like pagination or data freshness. This is adequate for a simple read-only list 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?

The description is two sentences long, with the primary action stated first. It avoids unnecessary detail and every sentence contributes value: the first defines the scope, the second gives usage guidance. No redundancy or filler.

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

Completeness5/5

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

For a tool with no parameters, no nested objects, and an existing output schema, the description fully covers what the tool does, what it returns, and when to use it. Annotations handle safety semantics. There are no obvious gaps that an agent would need to know to invoke this tool correctly.

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

Parameters4/5

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

The tool has zero parameters, so the schema is inherently comprehensive. The description adds meaning by indicating that the output includes breed names and sub-breeds, which helps set expectations for what the returned data represents. With no parameters, the description does not need to explain parameter semantics, and the baseline of 4 is appropriate.

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 clearly states the tool's function with a specific verb ('List') and a specific resource ('all available dog breeds and sub-breeds'). It differentiates the tool from sibling tools like breed_images or random_breed_image, which fetch images rather than list breeds.

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?

The description provides explicit usage context: 'Use to explore breeds or validate a breed name before fetching images.' This indicates when it should be used (before image fetching) and indirectly distinguishes it from image-fetching tools. It does not explicitly mention alternatives or when not to use it, but the guidance is clear enough.

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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List Breeds

Input Schema

Output Schema

Schema Changelog

TDQS

Glama MCP Gateway

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