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3DCityDB MCP Server

Official
by tum-gis

get_query_guidelines

Retrieve SQL best practices, indexed columns, optimization tips, and expensive operations to avoid for efficient 3DCityDB queries.

Instructions

Returns SQL best practices, indexed columns, optimization tips, and expensive operations to avoid for 3DCityDB queries.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior2/5

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

No annotations are provided, so the description bears full responsibility for behavioral disclosure. It does not mention whether the tool is read-only, requires any authentication, or has side effects. The description only lists what is returned, omitting important behavioral traits like cost or data source.

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 sentence of 16 words that directly states the tool's purpose. It is concise and front-loaded with the main action, with no unnecessary words.

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?

Given no output schema and no parameters, the description is the sole source of information. It lists the types of information returned but does not specify format (e.g., text, JSON) or provide example content. For a simple reference tool, this is minimally adequate but could be more complete.

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 and schema coverage is 100%. The description does not need to add parameter info since there are none. Baseline of 4 is appropriate as no additional meaning is required beyond the schema.

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 it returns SQL best practices, indexed columns, optimization tips, and expensive operations to avoid for 3DCityDB queries. The verb 'Returns' and specific resource names make the purpose unambiguous, and it is distinct from siblings like get_database_schema.

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

Usage Guidelines3/5

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

The description does not explicitly state when to use this tool versus alternatives. While the purpose implies consulting it for SQL guidelines, there is no guidance on when not to use it or which sibling tools to consider instead. The context is implied but not articulated.

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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