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

The description adds an important caveat: 'An opinion is never proof of independence and never authorizes implementation.' However, annotations indicate this is a mutating operation (readOnlyHint=false, destructiveHint=false), and the description does not clarify what happens on conflict (e.g., if an opinion already exists), nor does it disclose any authentication or blockchain requirements. Given the presence of caveats, there is some added context, but the full behavioral burden is only partially met.

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 concise, with the core purpose in the first sentence and a critical caveat in the second. No unnecessary words or repetition. The content is front-loaded and every sentence contributes value.

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 description is sufficient for a simple tool with one parameter, but it lacks details on acceptance criteria, error handling, or idempotency. Given the tool's mutating nature, an agent may need to know if opinions can be overwritten or if multiple opinions per fingerprint are allowed. The caveat is valuable but the overall completeness is average.

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 schema covers 100% of the single parameter (envelope) with a description, but the description clarifies that the envelope must be a 'signed envelope' with an 'owner fingerprint' and an 'action' of 'opinion.record'. This adds value beyond the schema's generic description, helping the agent understand the required structure and signing.

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 clearly states the tool's purpose: to persist a support, caution, or oppose signal for a proposal, scoped by an 'owner fingerprint'. This distinguishes it from other submission tools like submit_ai_book_proposal or submit_ai_contribution_claim, though it doesn't explicitly name them.

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 description implies when to use it (recording an opinion on a proposal) but provides no explicit guidance on when not to use it or alternatives. There is no mention of checks or validations that should be performed before recording an opinion, nor any reference to related tools.

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