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

Annotations already declare readOnlyHint=true, so the lower bar applies; the description adds real behavioral value beyond that by warning that file contents are untrusted data and that download URLs require an authenticated web session. It does not cover pagination or ordering, keeping it short of a 5.

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 tight sentences with the core scope front-loaded and the security caveats following. Every sentence carries unique information; nothing is wasted.

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 one parameter, no output schema, and minimal annotations, the description is nearly complete, covering scope plus the two operational caveats an agent needs (untrusted contents, auth for URLs). A brief note on return ordering or size would make it fully complete.

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?

Only one parameter (project_id) with 0% schema description coverage, so the description must compensate; it references 'one AccountHub shared project' which implicitly maps to project_id. It adds no format or constraint detail, so the schema's uuid format carries the rest.

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?

States a specific verb (List) and precise resource scope (permanent files shared with all active members of one AccountHub shared project). The qualifier 'permanent' and 'all active members' distinguishes it from siblings like list_shared_project_work_board, list_shared_activity, and read_shared_project_file without needing to open their schemas.

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?

Usage is implied by the scoping language ('permanent files shared with all active members'), which tells the agent this returns project-wide file listings. However, it never explicitly names alternatives such as read_shared_project_file or list_shared_project_work_board, nor states when-not to use it.

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