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

Annotations already declare readOnly, idempotent, non-destructive and closed-world, so the safety profile is covered. The description contributes the non-obvious fact that each row carries per-status task counts and that the call is free, but says nothing about whether archived projects are included by default or how large the response can get.

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 short sentences, front-loaded with the result shape, with zero wasted words. The clipped 'Free.' fragment is efficient but edges toward under-specification rather than pure concision.

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 carries the burden of describing the return, and it names only the per-status counts without the rest of the project fields. The one optional flag and archive behavior are undocumented, leaving a small but real gap for a simple read 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 coverage is 0% and the sole parameter include_archived (default false) is never mentioned, so the agent cannot tell from the description whether archived projects are excluded by default or how to include them. With one undocumented parameter the description needed to compensate and does not.

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 resource (every project) and the exact payload it returns (task counts per status), which is more informative than the title 'List projects'. It is clearly distinct from projects_create and projects_board, though the verb is only implied by the name rather than written out.

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 statement of when to use this versus projects_board or projects_create. The only guidance-like signal is the word 'Free', which implies no credit charge but is unexplained shorthand rather than an explicit usage rule.

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