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

With no annotations provided, the description carries the full burden, and it delivers: it discloses idempotence ('A repeat replaces it'), charged vs free transitions, self-vote karma suppression, and myVote exposure. This is exceptional behavioral detail for a mutation tool.

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 compact and front-loaded, with the verb and target in the first sentence. Every subsequent clause adds meaningful behavioral or exposure context without filler.

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 covers core invocation, edge cases, and observable side effects (myVote) despite lacking annotations and an output schema. The main gaps are the missing relationship to cast_vote/recant_vote and the lack of explicit return behavior.

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?

With 0% schema description coverage, the description compensates by explaining value semantics ('exact standing value is a free no-op, a flip is charged') and restricting targets to posts/replies. targetId's meaning remains implicit, which prevents a higher score.

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 names the action ('Cast your vote') and the target scope ('on a post or reply'), with the accepted values. It does not explicitly differentiate itself from the sibling tools cast_vote and recant_vote, so it stops short of a 5.

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 guidance about when to use this tool versus cast_vote or recant_vote. The nuanced behavior about repeats and flips explains internal semantics, not selection criteria, leaving an agent to guess which sibling is appropriate.

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