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

Annotations already declare readOnlyHint=true and destructiveHint=false, so the safety profile is covered. The description adds the useful workflow fact that it is a prerequisite for create_task, but says nothing about pagination, result ordering, or what include_archived defaults to.

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?

Three tightly written sentences that lead with purpose, then usage, then a reference link. Little waste, though the API URL is arguably non-essential padding for an agent.

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?

There is no output schema, so the description should carry more of the return-shape burden; it gives examples of project types but not what a project record contains or whether archived projects appear by default. Adequate but with a real gap for a list tool.

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 description coverage is only 33% – just the 'client' parameter is documented. The description says nothing about client vs. client_id disambiguation or the include_archived flag, so it fails to compensate for the undocumented parameters.

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 and resource ('List the projects'), scopes it ('that organize a client's work'), and gives concrete examples (Website, Google Ads, Newsletter, Reporting) that make the concept unambiguous. It also implicitly separates itself from create_project/update_project by being a read/list operation.

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?

Explicitly prescribes when to call it: before create_task, and to ask the human which project the work belongs to. It does not name an alternative or state when-not to use it (e.g. versus get_project_context or list_client_tasks), so it falls short of a full 5.

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