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lakehouse-42

@lakehouse/mcp-server

by lakehouse-42

ask_question

Use RAG to ask questions and receive AI answers with source count from your documents.

Instructions

RAG-based Q&A. Returns AI answer with source count.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
modelNo
questionYes
collection_idsNo
Behavior2/5

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

With no annotations, the description carries full responsibility for behavioral disclosure. It only mentions the return value (AI answer with source count) but does not disclose whether the operation is read-only, how sources are selected, or any limitations—information an agent would need to invoke it safely.

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 extremely concise, using two short sentences with no filler words. Every word contributes to the core purpose and output, making it appropriately sized for its brevity.

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

Completeness1/5

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

The tool has 3 parameters, no output schema, and no annotations, yet the description provides almost no contextual information. It fails to explain parameter roles, expected input format, or behavior beyond a vague output description, making it incomplete for a complex tool.

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

Parameters1/5

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

Schema description coverage is 0%, so the description must compensate but does not. None of the three parameters (question, model, collection_ids) are explained; even the purpose of collection_ids is left undefined. The description adds no meaningful parameter semantics beyond what the schema already shows.

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 the tool is RAG-based Q&A, which clearly identifies it as a question-answering tool. It distinguishes from sibling search tools by framing it as Q&A rather than generic search, though it doesn't explicitly name alternatives.

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 guidance on when to use this tool versus alternatives like search_tools or get_document. No context about scenarios or exclusions is given.

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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