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

Annotations only supply openWorldHint, so the description carries most of the burden and does well: it discloses the timing of the effect (before fulfillment submission) and the reversibility path (release later with approve_order). It omits permission requirements and what state the order enters while held, but the core mutation semantics are covered.

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 prose is tight and front-loads the action and the usage condition. However, the definition is marred by a stray artifact ('[#9a2fd5]') appended to the text, which is noise that does not earn its place.

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 and only a single low-value annotation, the description must carry the context, and it covers what the tool does, when to use it, and how to undo it. Missing details such as required permissions and the resulting order status keep it from being fully complete.

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 100%, so all three parameters are already documented in the schema. The description only restates that the reason is optional, adding no format, constraint, or interaction detail beyond the schema description. Baseline 3 applies when the schema does the heavy lifting.

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 ('Put an order on hold') plus the operational effect ('pausing it before it is submitted to fulfillment'). It does not, however, differentiate itself from close siblings like approve_order_hold, request_hold_changes, or list_order_holds, and its release pointer ('approve_order') is ambiguous given both approve_order and approve_order_hold exist.

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 triggering situation ('when the user wants to stop an order from proceeding') and gives concrete examples (double-checking design or address). It also names the counterpart action for release, but offers no exclusions distinguishing it from the other hold-related siblings.

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