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

Annotations already declare the mutation profile (readOnlyHint=false, idempotentHint=true, destructiveHint=false), so the description only needs to add operational context. It does so by stating the draft-existence precondition and the default behavior when scoping params are omitted ('all providers in the PostGroup are queued'), which is genuinely useful 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?

Front-loads the core action in the first sentence and keeps the prerequisite adjacent to it. The scoping sentence is dense but each clause carries distinct information, so little is wasted.

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 an output schema present, return values need no explanation, and annotations carry the safety profile. The description covers the precondition, scoping semantics, and default; only edge cases (e.g. past timestamps, cancellation path) are left unaddressed, which is acceptable for a 5-parameter tool.

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 five parameters are already documented. The description adds a concrete multi-account scoping example, but its statements about platform/channelName and the omitted-default largely restate the schema, so the baseline of 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 and resource ('Move a draft post into the publish queue at a future time'), and the prerequisite ('use create_post_draft first') cleanly separates it from the draft-creation and draft-editing siblings. An agent can identify the action and its scope without opening the schema.

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?

Explicitly names the prerequisite tool (create_post_draft) and describes the conditional routing of the optional scoping parameters with a concrete example. It does not spell out when NOT to use it (e.g. immediate publishing, or the cancel_scheduled_post counterpart), so it stops short of a full when/when-not/alternatives treatment.

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