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

Annotations only say readOnlyHint=false and destructiveHint=false; the description adds the genuinely important behavior that this is a toggle, not a one-way write, and that removed votes are possible. It notes the boolean-ish return without detailing the payload, and says nothing about permissions or rate limits, keeping it off a 5.

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 clauses, zero waste, with the toggle behavior front-loaded ahead of the return-value note. Nothing could be cut without losing information.

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 one-parameter toggle with full schema coverage and annotations declaring the write profile, the description supplies the only missing pieces: repeat-call semantics and return meaning. No output schema exists, so a slightly richer statement of the returned value would have closed the remaining gap.

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?

Single parameter with 100% schema description coverage, including the source of the id ("Id from list_feature_requests"). The description adds no further meaning about ideaId, so baseline 3 applies.

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?

Specific verb+resource ("votes for an idea") plus the non-obvious toggle semantics (calling again removes the vote). It does not name or distinguish itself from adjacent siblings like comment_feature_request or suggest_feature, but the action itself is unambiguous.

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 clear operational context: call once to vote, call again to un-vote, which is the key usage fact an agent needs. It stops short of naming alternatives (e.g., commenting on or creating a request via suggest_feature), so there is no explicit when-not guidance.

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