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

Annotations indicate a write operation (readOnlyHint=false) and not destructive (destructiveHint=false). Description adds that it auto-generates folder paths. However, it does not disclose behaviors like file overwrite, size limits, or error handling. Adequate but not comprehensive.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

Two concise sentences (25 words) conveying the core functionality. Front-loaded with action and outcome. No unnecessary words.

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

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

With 3 parameters and an output schema (not shown), description covers the main purpose and auto-folder generation. Lacks mention of prerequisites (e.g., cloud storage connection) but overall comprehensive given low complexity.

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

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

Schema covers all 3 parameters with descriptions (100% coverage). Description adds context that folder paths are based on entityType, which clarifies its role. However, no extra detail on entityId or fileName beyond schema. Baseline 3 is appropriate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool files a document to cloud storage with auto-generated folder paths. The verb 'file' and resource 'document' are specific. It distinguishes from sibling tools by focusing on document organization and cloud storage.

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

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

No explicit guidance on when to use this tool vs alternatives. No mentions of prerequisites (e.g., cloud storage setup), or when to avoid it. Only implies use for filing documents to organized folders.

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