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sdebruyn

fabric-dw-mcp-cli

by sdebruyn

clear_table

Truncate a SQL table in a Microsoft Fabric Data Warehouse by removing all rows while preserving the table structure and schema.

Instructions

Truncate a SQL table (remove all rows, keep structure).

Only supported on Fabric Data Warehouses (not SQL Analytics Endpoints). The service rejects SQL Analytics Endpoints with a ToolError.

CAUTION: This is a destructive, irreversible operation. All rows will be permanently deleted. The table structure and schema are preserved. Confirm with the user before calling.

Args: workspace: Workspace name or GUID. item: Warehouse name or GUID. SQL Analytics Endpoints are rejected. qualified_name: Dot-separated qualified table name, e.g. dbo.sales.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
itemYes
workspaceYes
qualified_nameYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior5/5

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

No annotations provided, but description fully discloses destructive irreversible nature, structure preservation, and platform restrictions. No contradictions.

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?

Well-structured with clear main action, caution, and args list. Front-loaded and every sentence adds value; no unnecessary text.

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

Completeness5/5

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

Given 3 parameters and no annotations, description covers all aspects: function, constraints, caution, parameter guidance. Complete for agent to use correctly.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters5/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

With 0% schema description coverage, the description explains all three parameters: workspace, item (warehouse), and qualified_name with example. Provides meaning beyond 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?

Description clearly states it truncates a SQL table (removes all rows, keeps structure). Distinct from sibling tools like delete_table, clone_table, etc.

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

Usage Guidelines5/5

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

Explicitly states only supported on Fabric Data Warehouses, not SQL Analytics Endpoints, and provides caution for destructive irreversible operation, advising user confirmation.

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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