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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, and the description is consistent with them. However, it adds no behavioral context beyond restating the purpose: it doesn't say what a failed validation looks like, whether a fingerprint is returned or persisted, or how the fingerprint is consumed downstream.

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 short sentences, front-loaded with the verb list and no filler. The trailing endpoint reference is slightly opaque to an agent but costs little space.

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?

The tool has no output schema and the description never indicates what comes back (validation verdict, normalized action, fingerprint) or how failures surface. For a high-complexity nested 9-field input with no return documentation, this leaves a real gap an agent must guess at.

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% and the nested action object is itself documented as 'A proposed agent action that can be normalized, reviewed, fingerprinted, and verified before execution.' The description adds nothing about the single 'action' parameter, so the schema does all the work – baseline 3.

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 three specific verbs (validate, normalize, fingerprint) on a clearly named resource ('a proposed agent action'), so the purpose is unambiguous. It does not differentiate itself from the close sibling verifyApprovedAction, leaving the agent to infer the preflight-vs-verify boundary.

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 when-to-use guidance, no statement of prerequisites (e.g., that it precedes verifyApprovedAction/execution), and no exclusions. The only routing hint is an HTTP endpoint URL, which tells the agent nothing about when this tool is the right choice.

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