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

Annotations already convey readOnly/openWorld/non-destructive. The description adds context by noting the status is public, the trust score is nested, may be null ('Provisional score is null'), and the result is not a certification. This exceeds the annotation baseline without contradicting it.

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 compact sentences, with the primary operation front-loaded and the caveat packaged efficiently. There is no filler or repetition.

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 simple single-parameter read tool with an output schema and safety annotations, the description covers the essential behavior: public status, trust score, nullability, and what it is not. It could add one sentence on typical use, but nothing critical is missing.

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 does not explain agent_id or how to obtain/use it. The parameter name and schema title make it obvious, but the description itself adds no semantic value for the only required parameter.

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?

Description specifies a clear verb and resource: 'Read public operational status and nested trust score.' It also adds a distinguishing negative ('not identity/safety certification'), though it does not explicitly differentiate from sibling health/check tools.

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 phrase 'read public operational status' implies a lightweight read-only status lookup, and 'not identity/safety certification' offers an exclusion. However, it gives no explicit guidance on when to prefer this over agent_health_checks or agent_health_heartbeat.

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