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

The description adds meaningful context beyond the annotations by stating the post will not be published, clarifying the rejection's impact. It doesn't contradict annotations (readOnlyHint false, destructiveHint false) and appropriately indicates the mutation without implying deletion.

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 two short sentences, front-loaded with the action and outcome, with zero wasted words. It is highly concise and well-structured.

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 mutation tool with no output schema, the description covers the essential behavior and consequence. It could mention the post's resulting state (e.g., remains as rejected), but given the annotations and schema richness, it is sufficiently 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 description coverage is 100%, so all three parameters are already documented. The description adds no additional meaning about parameter usage or semantics beyond what the schema provides, meeting the baseline for high coverage.

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 uses a specific verb ('reject') with a clear resource ('scheduled post that is pending approval') and outcome ('will not be published'). It effectively distinguishes from sibling tools like approve_post and delete_scheduled_post by narrowing to the rejection workflow.

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 description clearly implies when to use this tool: for scheduled posts pending approval that should not be published. However, it doesn't explicitly name alternatives or exclusions (e.g., 'use approve_post to approve'), leaving some room for ambiguity among closely related actions.

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