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

Annotations already declare readOnlyHint=false, destructiveHint=false, and openWorldHint=false, so the agent knows this is a non-destructive, closed-world mutation. The description adds the one behavioral fact annotations cannot convey — that the call moves the article into an approval step — but says nothing about resulting state, reversibility, resubmission, or notifications, which is thin for a workflow mutation.

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?

A single front-loaded sentence with no filler or redundancy. It is well-structured, though the extreme brevity for a three-required-parameter workflow mutation means it is arguably undersized rather than optimally concise.

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 mutation with no output schema, three undocumented required parameters, and no state prerequisites disclosed, the description is too thin. An agent cannot tell from this text what state the article must be in, what the resource identifiers mean, or what the call returns.

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 0% and the description explains none of the three required parameters. 'Draft article' loosely hints that assetId identifies the article, but projectId and siteId are entirely unexplained and their relationship is never stated, so the description does not compensate for the coverage gap.

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 (send) and resource (draft article) plus the destination state (approval step), so an agent can tell this is a workflow transition rather than a read or a publish. It does not explicitly distinguish itself from close siblings like approve_article, decide_article, or submit_article_improvement, so it falls short of a 5.

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 gives no when-to-use guidance and no preconditions. It never says the article must be in draft state, that this must precede approval/decision, or how it relates to decide_article/publish_article, leaving the agent to infer everything about routing.

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