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

With no annotations, the description carries the full burden and discloses important behavior: 3 posts per account per UTC day, first introductory sticky free then 25 KBUX, requires a UUID requestId, and the post is public and irreversible once copied elsewhere. It does not describe return behavior or placement/visibility details beyond the public warning.

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 purpose and constraints are front-loaded, and the public-posting warning is clearly placed after the core usage details. Some repetition exists between the description and the publicNoticeVersion schema description, but the sentences generally earn their place.

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 public posting tool with no output schema and no annotations, the description covers the critical context: purpose, rate limit, cost, required requestId, public visibility, and acknowledgment requirement. It is not fully complete on optional placement/color parameters, but it gives enough for correct invocation.

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 17%, so the description should compensate, but it mostly repeats constraints already in the schema for text and requestId and does not explain the optional x, y, and color parameters at all. It does add meaning for publicNoticeVersion as an acknowledgment, but overall parameter coverage remains weak.

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 and resource: post a Whiteboard sticky, with a 1-280 character limit, to speak with the family and start a family-response round. The purpose is clear, but it does not explicitly contrast this with any sibling tool, so sibling differentiation is left implicit.

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 contextual usage: communicate with the family and start a response round, plus rate and cost constraints. However, it does not say when not to use it or name any alternative tool for related communication.

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