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truncate_2

Truncate text to a specified length.

Input Schema

NameRequiredDescriptionDefault
textYesThe text to truncate
lengthNoMaximum length
suffixNoSuffix to add if truncated...

Output Schema

NameRequiredDescriptionDefault
originalYes
truncatedYes
was_truncatedYes
original_lengthYes
truncated_lengthYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed3 schema fields changed
    • removedOutput schema / $defs / TruncateResponse
      Removed value: -{
-  "properties": {
-    "original": {
-      "title": "Original",
-      "type": "string"
-    },
-    "original_length": {
-      "title": "Original Length",
-      "type": "integer"
-    },
-    "truncated": {
-      "title": "Truncated",
-      "type": "string"
-    },
-    "truncated_length": {
-      "title": "Truncated Length",
-      "type": "integer"
-    },
-    "was_truncated": {
-      "title": "Was Truncated",
-      "type": "boolean"
-    }
-  },
-  "required": [
-    "original",
-    "truncated",
-    "was_truncated",
-    "original_length",
-    "truncated_length"
-  ],
-  "title": "TruncateResponse",
-  "type": "object"
-}
    • addedOutput schema / $defs / app__routers__string_utils__TruncateResponse
      Added value: +{
+  "properties": {
+    "original": {
+      "title": "Original",
+      "type": "string"
+    },
+    "original_length": {
+      "title": "Original Length",
+      "type": "integer"
+    },
+    "truncated": {
+      "title": "Truncated",
+      "type": "string"
+    },
+    "truncated_length": {
+      "title": "Truncated Length",
+      "type": "integer"
+    },
+    "was_truncated": {
+      "title": "Was Truncated",
+      "type": "boolean"
+    }
+  },
+  "required": [
+    "original",
+    "truncated",
+    "was_truncated",
+    "original_length",
+    "truncated_length"
+  ],
+  "title": "TruncateResponse",
+  "type": "object"
+}
    • changedOutput schema / x-fastmcp-top-level-schema
      Previous value: -"TruncateResponse"New value: +"app__routers__string_utils__TruncateResponse"
  2. Changed3 schema fields changed
    • addedOutput schema / $defs / TruncateResponse
      Added value: +{
+  "properties": {
+    "original": {
+      "title": "Original",
+      "type": "string"
+    },
+    "original_length": {
+      "title": "Original Length",
+      "type": "integer"
+    },
+    "truncated": {
+      "title": "Truncated",
+      "type": "string"
+    },
+    "truncated_length": {
+      "title": "Truncated Length",
+      "type": "integer"
+    },
+    "was_truncated": {
+      "title": "Was Truncated",
+      "type": "boolean"
+    }
+  },
+  "required": [
+    "original",
+    "truncated",
+    "was_truncated",
+    "original_length",
+    "truncated_length"
+  ],
+  "title": "TruncateResponse",
+  "type": "object"
+}
    • removedOutput schema / $defs / app__routers__string_utils__TruncateResponse
      Removed value: -{
-  "properties": {
-    "original": {
-      "title": "Original",
-      "type": "string"
-    },
-    "original_length": {
-      "title": "Original Length",
-      "type": "integer"
-    },
-    "truncated": {
-      "title": "Truncated",
-      "type": "string"
-    },
-    "truncated_length": {
-      "title": "Truncated Length",
-      "type": "integer"
-    },
-    "was_truncated": {
-      "title": "Was Truncated",
-      "type": "boolean"
-    }
-  },
-  "required": [
-    "original",
-    "truncated",
-    "was_truncated",
-    "original_length",
-    "truncated_length"
-  ],
-  "title": "TruncateResponse",
-  "type": "object"
-}
    • changedOutput schema / x-fastmcp-top-level-schema
      Previous value: -"app__routers__string_utils__TruncateResponse"New value: +"TruncateResponse"
  3. Changed3 schema fields changed
    • removedOutput schema / $defs / TruncateResponse
      Removed value: -{
-  "properties": {
-    "original": {
-      "title": "Original",
-      "type": "string"
-    },
-    "original_length": {
-      "title": "Original Length",
-      "type": "integer"
-    },
-    "truncated": {
-      "title": "Truncated",
-      "type": "string"
-    },
-    "truncated_length": {
-      "title": "Truncated Length",
-      "type": "integer"
-    },
-    "was_truncated": {
-      "title": "Was Truncated",
-      "type": "boolean"
-    }
-  },
-  "required": [
-    "original",
-    "truncated",
-    "was_truncated",
-    "original_length",
-    "truncated_length"
-  ],
-  "title": "TruncateResponse",
-  "type": "object"
-}
    • addedOutput schema / $defs / app__routers__string_utils__TruncateResponse
      Added value: +{
+  "properties": {
+    "original": {
+      "title": "Original",
+      "type": "string"
+    },
+    "original_length": {
+      "title": "Original Length",
+      "type": "integer"
+    },
+    "truncated": {
+      "title": "Truncated",
+      "type": "string"
+    },
+    "truncated_length": {
+      "title": "Truncated Length",
+      "type": "integer"
+    },
+    "was_truncated": {
+      "title": "Was Truncated",
+      "type": "boolean"
+    }
+  },
+  "required": [
+    "original",
+    "truncated",
+    "was_truncated",
+    "original_length",
+    "truncated_length"
+  ],
+  "title": "TruncateResponse",
+  "type": "object"
+}
    • changedOutput schema / x-fastmcp-top-level-schema
      Previous value: -"TruncateResponse"New value: +"app__routers__string_utils__TruncateResponse"
  4. Changed3 schema fields changed
    • addedOutput schema / $defs / TruncateResponse
      Added value: +{
+  "properties": {
+    "original": {
+      "title": "Original",
+      "type": "string"
+    },
+    "original_length": {
+      "title": "Original Length",
+      "type": "integer"
+    },
+    "truncated": {
+      "title": "Truncated",
+      "type": "string"
+    },
+    "truncated_length": {
+      "title": "Truncated Length",
+      "type": "integer"
+    },
+    "was_truncated": {
+      "title": "Was Truncated",
+      "type": "boolean"
+    }
+  },
+  "required": [
+    "original",
+    "truncated",
+    "was_truncated",
+    "original_length",
+    "truncated_length"
+  ],
+  "title": "TruncateResponse",
+  "type": "object"
+}
    • removedOutput schema / $defs / app__routers__string_utils__TruncateResponse
      Removed value: -{
-  "properties": {
-    "original": {
-      "title": "Original",
-      "type": "string"
-    },
-    "original_length": {
-      "title": "Original Length",
-      "type": "integer"
-    },
-    "truncated": {
-      "title": "Truncated",
-      "type": "string"
-    },
-    "truncated_length": {
-      "title": "Truncated Length",
-      "type": "integer"
-    },
-    "was_truncated": {
-      "title": "Was Truncated",
-      "type": "boolean"
-    }
-  },
-  "required": [
-    "original",
-    "truncated",
-    "was_truncated",
-    "original_length",
-    "truncated_length"
-  ],
-  "title": "TruncateResponse",
-  "type": "object"
-}
    • changedOutput schema / x-fastmcp-top-level-schema
      Previous value: -"app__routers__string_utils__TruncateResponse"New value: +"TruncateResponse"
  5. Changed3 schema fields changed
    • removedOutput schema / $defs / TruncateResponse
      Removed value: -{
-  "properties": {
-    "original": {
-      "title": "Original",
-      "type": "string"
-    },
-    "original_length": {
-      "title": "Original Length",
-      "type": "integer"
-    },
-    "truncated": {
-      "title": "Truncated",
-      "type": "string"
-    },
-    "truncated_length": {
-      "title": "Truncated Length",
-      "type": "integer"
-    },
-    "was_truncated": {
-      "title": "Was Truncated",
-      "type": "boolean"
-    }
-  },
-  "required": [
-    "original",
-    "truncated",
-    "was_truncated",
-    "original_length",
-    "truncated_length"
-  ],
-  "title": "TruncateResponse",
-  "type": "object"
-}
    • addedOutput schema / $defs / app__routers__string_utils__TruncateResponse
      Added value: +{
+  "properties": {
+    "original": {
+      "title": "Original",
+      "type": "string"
+    },
+    "original_length": {
+      "title": "Original Length",
+      "type": "integer"
+    },
+    "truncated": {
+      "title": "Truncated",
+      "type": "string"
+    },
+    "truncated_length": {
+      "title": "Truncated Length",
+      "type": "integer"
+    },
+    "was_truncated": {
+      "title": "Was Truncated",
+      "type": "boolean"
+    }
+  },
+  "required": [
+    "original",
+    "truncated",
+    "was_truncated",
+    "original_length",
+    "truncated_length"
+  ],
+  "title": "TruncateResponse",
+  "type": "object"
+}
    • changedOutput schema / x-fastmcp-top-level-schema
      Previous value: -"TruncateResponse"New value: +"app__routers__string_utils__TruncateResponse"
  6. Changed3 schema fields changed
    • addedOutput schema / $defs / TruncateResponse
      Added value: +{
+  "properties": {
+    "original": {
+      "title": "Original",
+      "type": "string"
+    },
+    "original_length": {
+      "title": "Original Length",
+      "type": "integer"
+    },
+    "truncated": {
+      "title": "Truncated",
+      "type": "string"
+    },
+    "truncated_length": {
+      "title": "Truncated Length",
+      "type": "integer"
+    },
+    "was_truncated": {
+      "title": "Was Truncated",
+      "type": "boolean"
+    }
+  },
+  "required": [
+    "original",
+    "truncated",
+    "was_truncated",
+    "original_length",
+    "truncated_length"
+  ],
+  "title": "TruncateResponse",
+  "type": "object"
+}
    • removedOutput schema / $defs / app__routers__string_utils__TruncateResponse
      Removed value: -{
-  "properties": {
-    "original": {
-      "title": "Original",
-      "type": "string"
-    },
-    "original_length": {
-      "title": "Original Length",
-      "type": "integer"
-    },
-    "truncated": {
-      "title": "Truncated",
-      "type": "string"
-    },
-    "truncated_length": {
-      "title": "Truncated Length",
-      "type": "integer"
-    },
-    "was_truncated": {
-      "title": "Was Truncated",
-      "type": "boolean"
-    }
-  },
-  "required": [
-    "original",
-    "truncated",
-    "was_truncated",
-    "original_length",
-    "truncated_length"
-  ],
-  "title": "TruncateResponse",
-  "type": "object"
-}
    • changedOutput schema / x-fastmcp-top-level-schema
      Previous value: -"app__routers__string_utils__TruncateResponse"New value: +"TruncateResponse"
  7. First observed

TDQS

B3.1/5.0
Behavior2/5

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It does not explain edge cases such as what happens when the text is shorter than the specified length, whether the suffix is included in the length limit, or whether the operation is purely non-mutating. Only the basic purpose is conveyed.

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, front-loaded sentence with zero waste. It immediately states the operation and the target resource.

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 simple and the input schema covers all parameters with full descriptions, and an output schema exists. However, the description does not address why an agent should choose this tool over the nearly identical sibling 'truncate', leaving a contextual gap for tool selection.

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 description coverage is 100%, so all three parameters are already documented in the input schema. The description adds no additional semantics about parameter behavior beyond the schema, which is exactly the baseline expectation when schema coverage is high.

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: truncate text to a specified length. It is easy to understand at a glance. However, it does not distinguish this tool from the sibling tools 'truncate' and 'format_truncate', which likely perform similar operations.

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?

There is no guidance on when to use this tool versus alternatives such as 'truncate' or 'format_truncate', nor any context about exclusions or prerequisites. The usage is only implied by the name and description.

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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