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az-coder-123

SQL Server MCP

by az-coder-123

list_tables

List all tables and views in a database schema to map out available data objects. Use this to understand the structure before writing SQL queries.

Instructions

List all tables and views in a database schema

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
schemaNoSchema name (default: dbo)
Behavior2/5

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

Since no annotations are provided, the description carries the full burden of behavioral disclosure. It does not mention the default schema behavior (dbo), whether system tables/views are included, permission needs, or return format. This minimal disclosure leaves key traits undisclosed.

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, focused sentence with no filler words. It is appropriately sized and front-loaded with the action and resource.

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?

The tool is simple, but there is no output schema and no annotations. The description fails to clarify how it differs from 'list_tables_all' or to state the default schema scope. It is too minimal for an AI agent to reliably select this tool among many similar siblings.

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 description coverage for the single 'schema' parameter is 100% ('Schema name (default: dbo)'), so the baseline is 3. The description adds no additional parameter semantics beyond what the schema already provides.

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 clearly states the action ('List') and resource ('all tables and views in a database schema'), making its purpose understandable. However, it does not explicitly differentiate from the sibling tool 'list_tables_all', so it lacks sibling distinction.

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 'list_tables_all' or 'search_tables'. The description merely states the function, leaving the AI agent to infer usage context from the sibling names.

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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