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

Annotations already flag destructiveHint=true, non-idempotent, non-readOnly, so the safety profile is covered structurally and nothing here contradicts it. But the description adds zero context beyond the annotations: it does not say which fields are overwritten, whether omitted fields are preserved, or what permissions are needed — notable gaps for a destructive update.

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?

It is short, but the single sentence is literally duplicated, which is pure waste rather than conciseness. The problem is under-specification, not verbosity.

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 destructive mutation with a nested body of ten fields and no output schema, the description says nothing an agent needs in order to call it correctly — not the id requirement, not partial-vs-full update semantics, not the effect of queueBehaviour.

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?

Top-level schema description coverage is 0% — the single `request` wrapper param is undocumented — so the description would need to compensate, and it does not. The nested body properties (name, type, position, queueBehaviour, possibleValues) do carry their own inline descriptions, which keeps this above a 1, but the description contributes nothing about the update semantics of those fields.

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 is 'Update an action' repeated twice, which is a pure restatement of the tool name and annotation title. It gives no verb-plus-resource specificity and does nothing to distinguish this from actions-create, actions-delete, or actions-retrieve.

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?

There is no guidance on when to use this tool versus the many sibling action tools. An agent must infer entirely from the name that this is the PATCH-style mutation for an existing action.

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