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

Annotations already declare destructiveHint=true and idempotentHint=true, so the safety profile is covered. The description adds genuinely non-redundant behavior: cancellation succeeds regardless of current status, meaning an already-published slot can be removed — that is a subtle destructive consequence the annotations alone do not convey.

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 action and its source are front-loaded in the first clause, with the caveat following in a parenthetical. It is slightly dense with two cross-references, but every clause carries actionable information.

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 single-parameter destructive mutation with annotations and no output schema, the description supplies the key caveat an agent needs (status-agnostic removal) plus the source of the id. It does not state a return value, but with no output schema that omission is minor.

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?

There is a single parameter with 100% schema description coverage, and the schema already explains that scheduledArticleId comes from list_scheduled_articles or schedule_article. The description's pointer to the same source adds no new syntax or format detail, 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?

The description states a specific verb and resource — removing a slot from the editorial calendar — and ties it to the sibling that surfaces those slots (list_scheduled_articles). An agent can immediately distinguish this from schedule_article or publish_article without opening any 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?

It gives clear context (equivalent to deleting from the dashboard calendar) and a concrete caveat: it works regardless of the slot's status, so verify via list_scheduled_articles' wp_post_id/article_id that it hasn't already published. It stops short of naming explicit alternative tools for the not-yet-published case, but the when-to-use caution is real guidance.

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