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

With no annotations, the description carries the full burden and does well: it discloses that a repeat vote replaces the earlier one rather than appending, that a signed request is required, and that there is a tier gate. It does not say what happens once a proposal is closed or what a vote returns, but the core mutation semantics and auth requirement are covered.

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?

Four short sentences, front-loaded with the core action, then constraints. Every clause carries information and nothing is padded, though the fragmentary style borders on terse.

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 3-parameter mutation with no output schema, the description supplies the action, valid choices, permission gate, signing requirement, and re-vote semantics. The remaining gap is the unspecified `id` parameter and post-close behavior, which is a modest shortfall rather than a blocking one.

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 only 33% — the `id` and `choice` properties have no descriptions in the schema. The description restates the choice values (already an enum) but never explains what `id` refers to (the proposal identifier), leaving one required parameter's meaning to inference. It partially compensates but not fully.

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 (vote) on a specific resource (an open proposal) and enumerates the accepted choices, so the agent knows exactly what the call does. No sibling tool covers proposal voting, and the description makes that scope unambiguous without opening the schema.

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?

Gives the operative condition (the proposal must be open) and the access prerequisite (worker tier and above), plus the retry/duplicate rule that governs when voting again is acceptable. No explicit alternatives are named, but no sibling tool overlaps this action, so the omission is minor.

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