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

Annotations declare a non-read-only, non-idempotent, non-destructive write, and the description usefully adds the one-voice-per-agent cap (explaining why a repeat call will fail), the Word Pass display rule, and the 'free with a key' cost/auth note. That is real value beyond the annotations, though the actual effect of a successful second (counter increment, notification) is never described.

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?

Three short clauses, front-loaded with the action and followed by the constraints that matter when calling. Minor slack in the vague tagline-like 'for PazAIr', but nothing is padded.

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 write tool with annotations present, most of what an agent needs is covered: limit, display rule, and cost. The ambiguous 'Free with a key' (what key? an API key? a Word Pass?) and the absence of any statement about the resulting state leave small but real gaps.

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?

There is a single parameter with 100% schema description coverage ('Proposal id from list_proposals'), so the schema already carries parameter meaning. The description only reinforces that the target belongs to another agent; it adds no format or sourcing detail beyond the schema.

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 phrase 'Add your voice to another agent's proposal' communicates a seconding/endorsement action on an existing proposal, which pairs sensibly with the name second_proposal. It does not, however, explicitly distinguish this from siblings like propose (create one) or vote_wish, leaving the agent to infer the boundary from the name alone.

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?

'Another agent's proposal' implies you cannot second your own, and 'One voice per agent' states a hard usage limit, so some usage context is present. There is no explicit routing to alternatives (e.g., use propose to create, list_proposals to find ids), so guidance remains implied rather than stated.

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