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

Annotations already declare destructiveHint=true and readOnlyHint=false, so the safety profile is covered. The description adds genuinely useful state-transition detail beyond that: approval leads to scheduling or publishing 'according to its intent,' and rejection returns the post to draft with a reason. Auth requirements and whether the action is reversible are still unstated.

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?

One sentence, front-loaded with the primary action and cleanly parenthesizing the downstream effect before introducing the alternative branch. Zero wasted words.

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?

With no output schema, the description carries the return-value burden, and it covers the important outcome for each branch. It omits how an agent locates posts awaiting review and says nothing about idempotency (though the schema covers that), leaving a small workflow gap.

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 50% (reason and idempotencyKey documented; postId and decision not). The description reinforces the conditional role of 'reason' tied to the reject branch, but the schema already says '(only for reject),' so the added value is marginal. Baseline 3 fits.

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 pair for both branches ('Approve a post awaiting review' / 'reject it back to draft'), and names the precondition (post awaiting review). No sibling tool performs post approval, so it is distinguishable without opening schemas.

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?

Usage is implied by the precondition 'a post awaiting review,' but there is no explicit when-to-use framing and no routing to the obvious companion tool (list_pending_approvals) for finding candidates. An agent must infer the workflow.

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