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

Annotations already cover the safety profile (readOnly, idempotent, openWorld), so the description only needs to add context. It does add the 2-10 agent cardinality limit and the ranking/quality-summary behavior, but says nothing about what happens outside that range, whether the call is rate-limited, or how ties or unscored agents are handled.

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?

One front-loaded sentence with no filler; the cardinality limit and output nature are packed in efficiently. It is arguably too compressed to cover usage routing, but nothing in the text 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?

With no output schema, the description carries the burden of describing returns and does so at a high level (ranking plus per-agent reviewer quality summary). Missing are error/edge behavior and any hint of result structure, which matters for a comparison tool whose value is in the returned ranking.

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 both parameters are documented and the baseline is 3. The description contributes the 2-10 count constraint on 'agents', which the schema lacks, but it says nothing about how 'threshold' interacts with the ranking it mentions, leaving that param's role to the schema alone.

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 ('trust comparison of ... agents') plus scope (2-10) and output shape (ranked by score, reviewer quality summary per agent). An agent can tell this is a multi-agent comparison rather than a single-entity lookup, though it never names the sibling (trust_check, reviewer_analysis) it contrasts 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?

The '2-10 agents' scope implies usage when comparing several agents at once, but there is no explicit when-to-use or when-not-to-use guidance and no named alternative. An agent must infer that single-agent checks belong elsewhere.

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