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 useful context about what is displayed (status, schedule, channels) and that the view is interactive, but it does not disclose additional operational behavior such as result ordering or limitations. This is acceptable but not exceptionally rich beyond the annotations.

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 sentences deliver all essential information: what the tool does, the key filter option, and the alternative tool. The usage guidance is front-loaded and there is no wasted wording.

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 simple read-only listing tool with zero required parameters, full schema coverage, an output schema, and safety annotations, the description is complete. The agent has enough context to invoke it correctly and to distinguish it from list_posts.

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 100%, so both parameters (limit and status) are already documented in the input schema. The description reinforces that status can be used as an optional filter, but adds no new semantic detail beyond what the schema provides. Baseline 3 is appropriate.

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 it opens an interactive list of posts with status, schedule, and channels, and explicitly differentiates itself from list_posts by emphasizing the visual dashboard aspect. The verb 'open' plus the resource 'posts' makes the action specific and 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?

It explicitly tells the agent when to use this tool ('when the user wants to see their posts as an interactive dashboard') and names the alternative ('prefer over list_posts for a visual view'). This gives clear routing guidance without requiring schema inspection.

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