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

Annotations already declare readOnlyHint=true and idempotentHint=true, so the description adds value by noting bulk support (accepts multiple IDs). However, it does not explain output format, size limits, or error scenarios, which would further enhance transparency.

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?

The description is extremely concise: two short sentences with no fluff. It front-loads the core purpose and then adds the bulk support detail. Every sentence earns its place.

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?

The tool is simple (get DANFE by ID/batch) and the description covers the main action and bulk capability. However, it fails to mention what the tool returns (e.g., PDF, URL) or any authentication prerequisites, which is missing given no output schema.

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?

With 0% schema description coverage, the description partially explains the 'ids' parameter for batched execution but does not clarify the 'id' parameter (likely the note ID) or the 'account' parameter. It adds minimal semantic value beyond the parameter names.

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 obtains the DANFE (a tax document) of a note by ID, with specific verb 'Obtém' and resource 'DANFE'. It also mentions bulk support via 'ids', distinguishing it from siblings like 'f360_obter_xml' which gets XML data.

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?

The description implies the tool is for retrieving DANFE documents and supports batched execution, but lacks explicit guidance on when to use it versus alternatives (e.g., f360_obter_xml for XML). No prerequisites or exclusions are stated.

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