Amazing Marvin MCP

by bgheneti

Overview Schema Source Related Servers Discussions Admin

Python

Remote

get_categories

Retrieve your task categories from Amazing Marvin to organize and view your workspace.

Instructions

Get categories from Amazing Marvin

Input Schema

TableJSON Schema

Name	Required	Description	Default
`debug`	No

Output Schema

TableJSON Schema

Name	Required	Description	Default
`data`	Yes
`metadata`	Yes	Metadata about the data itself
`summary`	Yes	Human-readable insights
`debug`	Yes
`success`	Yes
`api_version`	No		current
`response_version`	No		1.0

Schema Changelog

Changes observed during successful MCP inspections.

Changed15 schema fields changedv0.1.7May 3, 2026

addedInput schema / additionalProperties
```
Added value: +false
```

removedOutput schema / $defs

Removed value: -{
-  "ErrorDetails": {
-    "properties": {
-      "error_type": {
-        "type": "string"
-      },
-      "message": {
-        "type": "string"
-      },
-      "retry_suggested": {
-        "default": false,
-        "type": "boolean"
-      },
-      "user_message": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "error_type",
-      "message",
-      "user_message"
-    ],
-    "type": "object"
-  },
-  "ResponseDebug": {
-    "properties": {
-      "api_calls_made": {
-        "default": 1,
-        "type": "integer"
-      },
-      "api_endpoint": {
-        "type": "string"
-      },
-      "cache_hit": {
-        "default": false,
-        "type": "boolean"
-      },
-      "error": {
-        "anyOf": [
-          {
-            "$ref": "#/$defs/ErrorDetails"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "default": null
-      },
-      "response_time_ms": {
-        "type": "integer"
-      },
-      "warnings": {
-        "anyOf": [
-          {
-            "items": {
-              "type": "string"
-            },
-            "type": "array"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "default": null
-      }
-    },
-    "required": [
-      "api_endpoint",
-      "response_time_ms"
-    ],
-    "type": "object"
-  },
-  "ResponseMetadata": {
-    "properties": {
-      "count": {
-        "type": "integer"
-      },
-      "data_freshness": {
-        "default": "real_time",
-        "type": "string"
-      },
-      "end_date": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "default": null
-      },
-      "filters_applied": {
-        "anyOf": [
-          {
-            "items": {
-              "type": "string"
-            },
-            "type": "array"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "default": null
-      },
-      "source": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "default": null
-      },
-      "start_date": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "default": null
-      }
-    },
-    "required": [
-      "count"
-    ],
-    "type": "object"
-  },
-  "ResponseSummary": {
-    "properties": {
-      "action_completed": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "default": null
-      },
-      "status": {
-        "type": "string"
-      },
-      "text": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "text",
-      "status"
-    ],
-    "type": "object"
-  }
-}

addedOutput schema / description

Added value: +"Standard response structure for all tools"

removedOutput schema / properties / data / title
```
Removed value: -"Data"
```

changedOutput schema / properties / debug / anyOf

Previous value: -[
-  {
-    "$ref": "#/$defs/ResponseDebug"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "description": "Technical execution details",
+    "properties": {
+      "api_calls_made": {
+        "default": 1,
+        "type": "integer"
+      },
+      "api_endpoint": {
+        "type": "string"
+      },
+      "cache_hit": {
+        "default": false,
+        "type": "boolean"
+      },
+      "error": {
+        "anyOf": [
+          {
+            "description": "Structured error information",
+            "properties": {
+              "error_type": {
+                "type": "string"
+              },
+              "message": {
+                "type": "string"
+              },
+              "retry_suggested": {
+                "default": false,
+                "type": "boolean"
+              },
+              "user_message": {
+                "type": "string"
+              }
+            },
+            "required": [
+              "error_type",
+              "message",
+              "user_message"
+            ],
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "default": null
+      },
+      "response_time_ms": {
+        "type": "integer"
+      },
+      "warnings": {
+        "anyOf": [
+          {
+            "items": {
+              "type": "string"
+            },
+            "type": "array"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "default": null
+      }
+    },
+    "required": [
+      "api_endpoint",
+      "response_time_ms"
+    ],
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]

removedOutput schema / properties / metadata / $ref
```
Removed value: -"#/$defs/ResponseMetadata"
```
addedOutput schema / properties / metadata / description
```
Added value: +"Metadata about the data itself"
```

addedOutput schema / properties / metadata / properties

Added value: +{
+  "count": {
+    "type": "integer"
+  },
+  "data_freshness": {
+    "default": "real_time",
+    "type": "string"
+  },
+  "end_date": {
+    "anyOf": [
+      {
+        "type": "string"
+      },
+      {
+        "type": "null"
+      }
+    ],
+    "default": null
+  },
+  "filters_applied": {
+    "anyOf": [
+      {
+        "items": {
+          "type": "string"
+        },
+        "type": "array"
+      },
+      {
+        "type": "null"
+      }
+    ],
+    "default": null
+  },
+  "source": {
+    "anyOf": [
+      {
+        "type": "string"
+      },
+      {
+        "type": "null"
+      }
+    ],
+    "default": null
+  },
+  "start_date": {
+    "anyOf": [
+      {
+        "type": "string"
+      },
+      {
+        "type": "null"
+      }
+    ],
+    "default": null
+  }
+}

addedOutput schema / properties / metadata / required
```
Added value: +[
+  "count"
+]
```
addedOutput schema / properties / metadata / type
```
Added value: +"object"
```
removedOutput schema / properties / summary / $ref
```
Removed value: -"#/$defs/ResponseSummary"
```
addedOutput schema / properties / summary / description
```
Added value: +"Human-readable insights"
```

addedOutput schema / properties / summary / properties

Added value: +{
+  "action_completed": {
+    "anyOf": [
+      {
+        "type": "string"
+      },
+      {
+        "type": "null"
+      }
+    ],
+    "default": null
+  },
+  "status": {
+    "type": "string"
+  },
+  "text": {
+    "type": "string"
+  }
+}

addedOutput schema / properties / summary / required
```
Added value: +[
+  "text",
+  "status"
+]
```
addedOutput schema / properties / summary / type
```
Added value: +"object"
```

First observedv1.0.1Feb 1, 2026

TDQS

C2.2/5.0

Behavior2/5

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

With no annotations, the description must disclose behavioral traits, but it only says 'Get categories.' No information on side effects, performance, or limitations. Minimal disclosure.

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

Conciseness3/5

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

A single sentence, which is concise, but it sacrifices necessary detail. It is appropriate in length for a simple tool, but lacks depth.

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

Completeness2/5

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

Despite having an output schema, the description does not explain what categories are or how they relate to other entities. Given the sibling tool diversity, this is insufficient.

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

Parameters1/5

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

Schema description coverage is 0% and the description adds no meaning for the 'debug' parameter. The parameter's purpose is completely unexplained.

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

Purpose3/5

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

Description states 'Get categories from Amazing Marvin,' which is a specific verb and resource, but it does not distinguish categories from sibling tools like get_labels or get_goals. The purpose is clear in isolation but lacks differentiation.

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

Usage Guidelines2/5

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

No guidance on when to use this tool versus alternatives. The description provides no context for selection among the many sibling tools.

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