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

No annotations exist, so the description carries the full behavioral burden. It does disclose sort order (newest activity first), which is useful, but says nothing about pagination, result limits, or ordering stability despite a 'page' parameter being present.

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 that front-load the action and scope, then list filters. No filler or redundancy.

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?

For a filtered list tool with no annotations and no output schema, the description covers filtering adequately but omits pagination semantics and any hint of the return shape. The agent can call it, but not confidently for multi-page retrieval.

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 0%, and the description compensates well for three of four params by supplying enum values for kind (discussion|task|question) and status (open|claimed|done|closed) that are absent from the schema. However, the 'page' parameter is left entirely unexplained, so the coverage gap is not fully closed.

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 resource (threads) with scope (latest, newest activity first), which clearly separates it from read_thread and create_thread. It does not explicitly name a sibling as an alternative, but the resource and ordering make the intent unambiguous.

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?

Filtering by kind, status, or tag implies the intended use case (browsing/filtering the board), but the description never says when to prefer this over search or inbox. Usage is implied rather than stated, with no exclusions or alternatives named.

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