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

With no annotations, the description must disclose behavior. It indicates a read-only listing operation and mentions returned metadata, but it does not state whether the operation is non-destructive, mention pagination, sorting, or any side effects. For a listing tool this is a significant gap.

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 concise, with three short sentences that front-load the core purpose. It includes essential details without fluff, though it could be slightly tighter. Overall it is appropriately sized.

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?

Without an output schema, the description notes the return includes post count and mode, which is helpful. However, it omits pagination details, sorting, and any differentiation from the sibling discussion_list_open. For a listing tool of moderate complexity, this is adequate but not 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?

Schema coverage is only 25% (only owner_key is described). The description explains that visibility and status parameters act as filters, adding meaning to those two. However, it does not cover the limit parameter, and owner_key is already well-documented in the schema. The description partially compensates for low coverage but not fully.

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 lists deliberation threads visible to the caller, specifies filtering by visibility/status, and notes the returned metadata (post count, mode). This is specific and actionable, though it doesn't explicitly differentiate from the sibling discussion_list_open, so it misses a point.

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 guidance is provided on when to use this tool versus alternatives like discussion_list_open or discussion_get. The description implies a general listing use case but gives no exclusions, prerequisites, or context for choosing it over siblings.

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