Create document download URL

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

With no annotations, the description fully discloses behavioral traits: the URL is short-lived, signed, requires no auth header, works only for existing .docx, and returns a specific object with fields url, objectKey, expiresAt, exists. It also clarifies that exists is false when the object is missing.

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 four sentences, each serving a distinct purpose: function, path explanation, usage context, and return value. No redundant information, tightly packed with valuable details.

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?

Given the tool has one parameter, no output schema, and no annotations, the description covers all aspects: parameter semantics, return value structure, usage scenario, and even the path convention. It is complete and leaves no ambiguity for the agent.

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?

Despite 0% schema description coverage, the description extensively explains the sole parameter relPath: 'documents-relative, like 'chapitre_05/Manuel - Chapitre 5.docx' — the same path used by create_upload_url and get_document_text'. This provides format, examples, and cross-reference, fully compensating for the missing schema.

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's function: 'Get a short-lived signed URL to download an EXISTING .docx from the bucket with an HTTP GET'. It specifies the resource (existing .docx), action (download URL), and distinguishes from siblings like create_upload_url (upload) and get_document_text (text extraction).

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 explains when to use: 'Use this to fetch the original binary file ... so you can edit it and re-upload via create_upload_url'. It relates to siblings and gives context. However, it does not explicitly state when NOT to use it (e.g., for text extraction), though the sibling set and context imply it.

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