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

Annotations already declare destructiveHint=true and non-idempotent, and the description corroborates by saying it 'replaces' the existing image, so the agent knows prior content is overwritten. It also discloses two traits not in the annotations: the operation is blocked once the attorney has filed, and it drives a status transition back to review.

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?

Two tight sentences with no filler, and the core action plus its replacement semantics are front-loaded. The second sentence is slightly elliptical about what exactly 'sends back for review' means, but nothing 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?

For a five-parameter mutation with full schema coverage, no output schema, and annotations covering the safety profile, the description supplies the missing pieces: what is overwritten, the filing-state gate, and the resulting status change. An agent has enough to call it correctly.

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 (id, name, token, content_type, content_base64) are already documented, including the 3 MB limit and the enum of accepted image types. The description adds no parameter-level meaning beyond 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 ('adds or replaces the image showing the mark in use'), and even disambiguates the legal term 'specimen' into plain language. It is clearly distinct from every sibling (no other tool touches specimen images), though it never names a sibling to contrast with.

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?

'until the attorney has filed' implies a timing precondition, and 'sends a filing that needed changes back for review' implies the tool is used on filings that were returned for correction. However, neither is framed as an explicit when-to-use rule, and no alternative tool is named.

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