MCP Firebird

get-field-descriptions

get-field-descriptions

Read-onlyIdempotent

Retrieve stored descriptions for fields in a specified Firebird table when they exist, clarifying column meaning for SQL queries and data analysis.

Instructions

Gets the stored descriptions for fields of a specific table (if they exist).

Input Schema

TableJSON Schema

Name	Required	Description	Default
`tableName`	Yes	Name of the table to get field descriptions for

Output Schema

TableJSON Schema

Name	Required	Description
`error`	No	Failure information; present when success is false
`result`	No	The legacy JSON payload; present for completed operations and partial batches
`success`	Yes	False for tool failures, including partially failed batches

Schema Changelog

Changes observed during successful MCP inspections.

Changed3 schema fields changedv2.12.0Oct 7, 2026

changedInput schema / $schema

Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"

removedInput schema / additionalProperties
```
Removed value: -false
```

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "$defs": {
+    "__schema0": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "number"
+        },
+        {
+          "type": "boolean"
+        },
+        {
+          "type": "null"
+        },
+        {
+          "items": {
+            "$ref": "#/$defs/__schema0"
+          },
+          "type": "array"
+        },
+        {
+          "additionalProperties": {
+            "$ref": "#/$defs/__schema0"
+          },
+          "propertyNames": {
+            "type": "string"
+          },
+          "type": "object"
+        }
+      ]
+    },
+    "__schema1": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "number"
+        },
+        {
+          "type": "boolean"
+        },
+        {
+          "type": "null"
+        },
+        {
+          "items": {
+            "$ref": "#/$defs/__schema1"
+          },
+          "type": "array"
+        },
+        {
+          "additionalProperties": {
+            "$ref": "#/$defs/__schema1"
+          },
+          "propertyNames": {
+            "type": "string"
+          },
+          "type": "object"
+        }
+      ]
+    }
+  },
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "additionalProperties": false,
+  "properties": {
+    "error": {
+      "additionalProperties": false,
+      "description": "Failure information; present when success is false",
+      "properties": {
+        "details": {
+          "additionalProperties": {
+            "$ref": "#/$defs/__schema1"
+          },
+          "propertyNames": {
+            "type": "string"
+          },
+          "type": "object"
+        },
+        "message": {
+          "type": "string"
+        },
+        "type": {
+          "type": "string"
+        }
+      },
+      "required": [
+        "message",
+        "type"
+      ],
+      "type": "object"
+    },
+    "result": {
+      "additionalProperties": false,
+      "description": "The legacy JSON payload; present for completed operations and partial batches",
+      "properties": {
+        "fieldDescriptions": {
+          "items": {
+            "additionalProperties": false,
+            "properties": {
+              "description": {
+                "$ref": "#/$defs/__schema0"
+              },
+              "name": {
+                "type": "string"
+              }
+            },
+            "required": [
+              "name",
+              "description"
+            ],
+            "type": "object"
+          },
+          "type": "array"
+        }
+      },
+      "required": [
+        "fieldDescriptions"
+      ],
+      "type": "object"
+    },
+    "success": {
+      "description": "False for tool failures, including partially failed batches",
+      "type": "boolean"
+    }
+  },
+  "required": [
+    "success"
+  ],
+  "type": "object"
+}

First observedAug 18, 2025

TDQS

B3.4/5.0

Behavior3/5

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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint: false, and openWorldHint: false, covering the safety profile. The description adds the useful qualifier '(if they exist)', implying the result may be empty for fields without stored descriptions, but it does not disclose return format or other behavioral details.

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 no redundant or filler text. It efficiently conveys the core operation and the optional-availability caveat.

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?

For a simple one-parameter read tool with full schema coverage, rich annotations, and an output schema, the description is nearly complete. It could add a bit more context about the nature of 'stored descriptions' or what happens when none exist, but nothing critical is missing for correct invocation.

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%, and the single parameter 'tableName' is already documented in the schema. The description adds no syntax, format, or validation details beyond what the schema provides, so the baseline of 3 applies.

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 specific verb ('Gets') and resource ('stored descriptions for fields of a specific table'), making the operation clear. However, it does not explicitly distinguish this tool from sibling tools like 'describe-table', which may also expose field metadata, so the agent must infer the distinction from context.

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?

The description provides no explicit when-to-use or when-not-to-use guidance, nor does it name alternatives or prerequisites. It merely states the purpose, leaving the agent to infer that this tool is appropriate when field descriptions are needed.

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