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

No annotations are supplied, so the description must disclose operational behavior. It explains how a returned verdict can be verified, but omits whether this is a read-only retrieval, what permissions are needed, what happens for an unknown id, and whether side effects occur.

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 description is two tight sentences with no filler, and the verification instruction is front-loaded. It is concise, though the opening noun phrase could better establish the tool's action before giving verification mechanics.

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 no annotations, the description carries the full burden of explaining the operation and return value. It gives useful verification mechanics but does not explain what the tool actually returns for an id or how the canonical JSON body, digest, and signature are structured.

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?

The sole required parameter, id, is not mentioned in the description, and schema description coverage is 0%. The description does not explain whether id selects a verdict, which entity it identifies, or how it relates to the returned digest and signature.

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 names an artifact ('A signed verdict') and explains how to verify it, but never states an action such as retrieve, fetch, or verify by id. It largely restates the resource implied by the tool name and does not clearly distinguish its purpose from siblings like opsin_ask or opsin_status.

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 explicit guidance on when to use this tool, when not to use it, or which sibling tool is the alternative. The description provides cryptographic context but leaves usage selection entirely to inference from the tool name.

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