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

Annotations already declare readOnlyHint and destructiveHint=false, so the description's read-only restatement is partly redundant. However, it adds genuine value beyond annotations: row-level structure (feedbackAction on topic rows, replyAction tied to a specific message) and explicit negative capabilities (no KG search, no writes, no LLM calls).

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 front-loaded sentences with no filler; the purpose and the alternative-routing constraint come first. The read-only sentence overlaps with annotations, but the row-structure detail earns its place.

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?

An output schema exists, so return values needn't be described, yet the description helpfully clarifies the row types and their embedded actions. Read-only status is covered by annotations. Complete enough for correct invocation, though it could say more about paging behavior.

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 83%, so the schema already documents nearly all parameters (limit, offset, search, popular, category, language). The description adds no syntax, format, or default guidance beyond what the schema provides, so the baseline 3 applies.

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+resource (read topics, comments, and replies) and a distinctive scope: 'one recent-activity feed without choosing a target first.' This clearly separates it from sibling target-bound tools like list_feedback, list_topics, and get_popular_feedback.

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?

The phrase 'without choosing a target first' tells the agent when this tool is preferred over target-scoped siblings, and the negative statement 'never searches the KG' routes away from search_knowledge_graph. It lacks explicit 'use X instead' naming, but the selection context is clear.

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