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TinyFn

by io.tinyfn
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max_value

Find maximum value.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
numbersYesComma-separated numbers

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
maxNo
codeNo
errorNo
indexNo
numbersNo

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed3 schema fields changed
    • removedOutput schema / $defs / MaxResponse
      Removed value: -{
-  "properties": {
-    "code": {
-      "anyOf": [
-        {
-          "type": "string"
-        },
-        {
-          "type": "null"
-        }
-      ],
-      "title": "Code"
-    },
-    "error": {
-      "anyOf": [
-        {
-          "type": "string"
-        },
-        {
-          "type": "null"
-        }
-      ],
-      "title": "Error"
-    },
-    "index": {
-      "anyOf": [
-        {
-          "type": "integer"
-        },
-        {
-          "type": "null"
-        }
-      ],
-      "title": "Index"
-    },
-    "max": {
-      "anyOf": [
-        {
-          "type": "number"
-        },
-        {
-          "type": "null"
-        }
-      ],
-      "title": "Max"
-    },
-    "numbers": {
-      "anyOf": [
-        {
-          "items": {
-            "type": "number"
-          },
-          "type": "array"
-        },
-        {
-          "type": "null"
-        }
-      ],
-      "title": "Numbers"
-    }
-  },
-  "title": "MaxResponse",
-  "type": "object"
-}
    • addedOutput schema / $defs / app__routers__misc_utils__MaxResponse
      Added value: +{
+  "properties": {
+    "code": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "title": "Code"
+    },
+    "error": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "title": "Error"
+    },
+    "index": {
+      "anyOf": [
+        {
+          "type": "integer"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "title": "Index"
+    },
+    "max": {
+      "anyOf": [
+        {
+          "type": "number"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "title": "Max"
+    },
+    "numbers": {
+      "anyOf": [
+        {
+          "items": {
+            "type": "number"
+          },
+          "type": "array"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "title": "Numbers"
+    }
+  },
+  "title": "MaxResponse",
+  "type": "object"
+}
    • changedOutput schema / x-fastmcp-top-level-schema
      Previous value: -"MaxResponse"New value: +"app__routers__misc_utils__MaxResponse"
  2. Changed3 schema fields changed
    • addedOutput schema / $defs / MaxResponse
      Added value: +{
+  "properties": {
+    "code": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "title": "Code"
+    },
+    "error": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "title": "Error"
+    },
+    "index": {
+      "anyOf": [
+        {
+          "type": "integer"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "title": "Index"
+    },
+    "max": {
+      "anyOf": [
+        {
+          "type": "number"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "title": "Max"
+    },
+    "numbers": {
+      "anyOf": [
+        {
+          "items": {
+            "type": "number"
+          },
+          "type": "array"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "title": "Numbers"
+    }
+  },
+  "title": "MaxResponse",
+  "type": "object"
+}
    • removedOutput schema / $defs / app__routers__misc_utils__MaxResponse
      Removed value: -{
-  "properties": {
-    "code": {
-      "anyOf": [
-        {
-          "type": "string"
-        },
-        {
-          "type": "null"
-        }
-      ],
-      "title": "Code"
-    },
-    "error": {
-      "anyOf": [
-        {
-          "type": "string"
-        },
-        {
-          "type": "null"
-        }
-      ],
-      "title": "Error"
-    },
-    "index": {
-      "anyOf": [
-        {
-          "type": "integer"
-        },
-        {
-          "type": "null"
-        }
-      ],
-      "title": "Index"
-    },
-    "max": {
-      "anyOf": [
-        {
-          "type": "number"
-        },
-        {
-          "type": "null"
-        }
-      ],
-      "title": "Max"
-    },
-    "numbers": {
-      "anyOf": [
-        {
-          "items": {
-            "type": "number"
-          },
-          "type": "array"
-        },
-        {
-          "type": "null"
-        }
-      ],
-      "title": "Numbers"
-    }
-  },
-  "title": "MaxResponse",
-  "type": "object"
-}
    • changedOutput schema / x-fastmcp-top-level-schema
      Previous value: -"app__routers__misc_utils__MaxResponse"New value: +"MaxResponse"
  3. Changed3 schema fields changed
    • removedOutput schema / $defs / MaxResponse
      Removed value: -{
-  "properties": {
-    "code": {
-      "anyOf": [
-        {
-          "type": "string"
-        },
-        {
-          "type": "null"
-        }
-      ],
-      "title": "Code"
-    },
-    "error": {
-      "anyOf": [
-        {
-          "type": "string"
-        },
-        {
-          "type": "null"
-        }
-      ],
-      "title": "Error"
-    },
-    "index": {
-      "anyOf": [
-        {
-          "type": "integer"
-        },
-        {
-          "type": "null"
-        }
-      ],
-      "title": "Index"
-    },
-    "max": {
-      "anyOf": [
-        {
-          "type": "number"
-        },
-        {
-          "type": "null"
-        }
-      ],
-      "title": "Max"
-    },
-    "numbers": {
-      "anyOf": [
-        {
-          "items": {
-            "type": "number"
-          },
-          "type": "array"
-        },
-        {
-          "type": "null"
-        }
-      ],
-      "title": "Numbers"
-    }
-  },
-  "title": "MaxResponse",
-  "type": "object"
-}
    • addedOutput schema / $defs / app__routers__misc_utils__MaxResponse
      Added value: +{
+  "properties": {
+    "code": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "title": "Code"
+    },
+    "error": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "title": "Error"
+    },
+    "index": {
+      "anyOf": [
+        {
+          "type": "integer"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "title": "Index"
+    },
+    "max": {
+      "anyOf": [
+        {
+          "type": "number"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "title": "Max"
+    },
+    "numbers": {
+      "anyOf": [
+        {
+          "items": {
+            "type": "number"
+          },
+          "type": "array"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "title": "Numbers"
+    }
+  },
+  "title": "MaxResponse",
+  "type": "object"
+}
    • changedOutput schema / x-fastmcp-top-level-schema
      Previous value: -"MaxResponse"New value: +"app__routers__misc_utils__MaxResponse"
  4. Changed3 schema fields changed
    • addedOutput schema / $defs / MaxResponse
      Added value: +{
+  "properties": {
+    "code": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "title": "Code"
+    },
+    "error": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "title": "Error"
+    },
+    "index": {
+      "anyOf": [
+        {
+          "type": "integer"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "title": "Index"
+    },
+    "max": {
+      "anyOf": [
+        {
+          "type": "number"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "title": "Max"
+    },
+    "numbers": {
+      "anyOf": [
+        {
+          "items": {
+            "type": "number"
+          },
+          "type": "array"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "title": "Numbers"
+    }
+  },
+  "title": "MaxResponse",
+  "type": "object"
+}
    • removedOutput schema / $defs / app__routers__misc_utils__MaxResponse
      Removed value: -{
-  "properties": {
-    "code": {
-      "anyOf": [
-        {
-          "type": "string"
-        },
-        {
-          "type": "null"
-        }
-      ],
-      "title": "Code"
-    },
-    "error": {
-      "anyOf": [
-        {
-          "type": "string"
-        },
-        {
-          "type": "null"
-        }
-      ],
-      "title": "Error"
-    },
-    "index": {
-      "anyOf": [
-        {
-          "type": "integer"
-        },
-        {
-          "type": "null"
-        }
-      ],
-      "title": "Index"
-    },
-    "max": {
-      "anyOf": [
-        {
-          "type": "number"
-        },
-        {
-          "type": "null"
-        }
-      ],
-      "title": "Max"
-    },
-    "numbers": {
-      "anyOf": [
-        {
-          "items": {
-            "type": "number"
-          },
-          "type": "array"
-        },
-        {
-          "type": "null"
-        }
-      ],
-      "title": "Numbers"
-    }
-  },
-  "title": "MaxResponse",
-  "type": "object"
-}
    • changedOutput schema / x-fastmcp-top-level-schema
      Previous value: -"app__routers__misc_utils__MaxResponse"New value: +"MaxResponse"
  5. Changed3 schema fields changed
    • removedOutput schema / $defs / MaxResponse
      Removed value: -{
-  "properties": {
-    "code": {
-      "anyOf": [
-        {
-          "type": "string"
-        },
-        {
-          "type": "null"
-        }
-      ],
-      "title": "Code"
-    },
-    "error": {
-      "anyOf": [
-        {
-          "type": "string"
-        },
-        {
-          "type": "null"
-        }
-      ],
-      "title": "Error"
-    },
-    "index": {
-      "anyOf": [
-        {
-          "type": "integer"
-        },
-        {
-          "type": "null"
-        }
-      ],
-      "title": "Index"
-    },
-    "max": {
-      "anyOf": [
-        {
-          "type": "number"
-        },
-        {
-          "type": "null"
-        }
-      ],
-      "title": "Max"
-    },
-    "numbers": {
-      "anyOf": [
-        {
-          "items": {
-            "type": "number"
-          },
-          "type": "array"
-        },
-        {
-          "type": "null"
-        }
-      ],
-      "title": "Numbers"
-    }
-  },
-  "title": "MaxResponse",
-  "type": "object"
-}
    • addedOutput schema / $defs / app__routers__misc_utils__MaxResponse
      Added value: +{
+  "properties": {
+    "code": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "title": "Code"
+    },
+    "error": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "title": "Error"
+    },
+    "index": {
+      "anyOf": [
+        {
+          "type": "integer"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "title": "Index"
+    },
+    "max": {
+      "anyOf": [
+        {
+          "type": "number"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "title": "Max"
+    },
+    "numbers": {
+      "anyOf": [
+        {
+          "items": {
+            "type": "number"
+          },
+          "type": "array"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "title": "Numbers"
+    }
+  },
+  "title": "MaxResponse",
+  "type": "object"
+}
    • changedOutput schema / x-fastmcp-top-level-schema
      Previous value: -"MaxResponse"New value: +"app__routers__misc_utils__MaxResponse"
  6. Changed3 schema fields changed
    • addedOutput schema / $defs / MaxResponse
      Added value: +{
+  "properties": {
+    "code": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "title": "Code"
+    },
+    "error": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "title": "Error"
+    },
+    "index": {
+      "anyOf": [
+        {
+          "type": "integer"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "title": "Index"
+    },
+    "max": {
+      "anyOf": [
+        {
+          "type": "number"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "title": "Max"
+    },
+    "numbers": {
+      "anyOf": [
+        {
+          "items": {
+            "type": "number"
+          },
+          "type": "array"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "title": "Numbers"
+    }
+  },
+  "title": "MaxResponse",
+  "type": "object"
+}
    • removedOutput schema / $defs / app__routers__misc_utils__MaxResponse
      Removed value: -{
-  "properties": {
-    "code": {
-      "anyOf": [
-        {
-          "type": "string"
-        },
-        {
-          "type": "null"
-        }
-      ],
-      "title": "Code"
-    },
-    "error": {
-      "anyOf": [
-        {
-          "type": "string"
-        },
-        {
-          "type": "null"
-        }
-      ],
-      "title": "Error"
-    },
-    "index": {
-      "anyOf": [
-        {
-          "type": "integer"
-        },
-        {
-          "type": "null"
-        }
-      ],
-      "title": "Index"
-    },
-    "max": {
-      "anyOf": [
-        {
-          "type": "number"
-        },
-        {
-          "type": "null"
-        }
-      ],
-      "title": "Max"
-    },
-    "numbers": {
-      "anyOf": [
-        {
-          "items": {
-            "type": "number"
-          },
-          "type": "array"
-        },
-        {
-          "type": "null"
-        }
-      ],
-      "title": "Numbers"
-    }
-  },
-  "title": "MaxResponse",
-  "type": "object"
-}
    • changedOutput schema / x-fastmcp-top-level-schema
      Previous value: -"app__routers__misc_utils__MaxResponse"New value: +"MaxResponse"
  7. First observed

TDQS

B3.1/5.0
Behavior2/5

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It only restates the basic operation and does not mention edge cases, return type, invalid input handling, or how empty or non-numeric values are treated.

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 a single, compact sentence with no redundant words. It is front-loaded and appropriately sized for a simple single-parameter tool.

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

Completeness3/5

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

The tool is trivial and has an output schema, so the missing return details are not critical. However, the absence of any distinction from similarly named siblings and the lack of behavioral edge-case information make the definition minimally complete but not fully helpful.

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?

The schema fully describes the only parameter as 'Comma-separated numbers', so schema coverage is high. The description itself adds no additional parameter meaning beyond what the schema already provides, yielding the baseline score.

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

Purpose4/5

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

The description states a clear verb and resource: 'Find maximum value.' Combined with the parameter name 'numbers', it communicates the core operation. However, it does not differentiate from closely named siblings like 'maximum', 'minimum', or 'min_value'.

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 is given about when to use this tool versus its alternatives. Given many sibling tools with similar names, the absence of any usage context is a notable gap.

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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