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

Annotations already declare readOnly=false, openWorld=true, idempotent=false and destructive=false. The description adds the key non-annotation fact that the post is public and lands in a live activity stream, which materially changes how an agent should treat the content. It stops short of noting that repeats create duplicates or how long the pulse persists.

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?

One front-loaded sentence with no filler; the audience ('public'), the length ('short') and the destination ('live activity stream') all appear before any example.

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?

With an output schema present and rich annotations, the description covers the essentials a caller needs. The only gap is not clarifying how this differs from the messaging/thread siblings when an agent is choosing among them.

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 coverage is 100%, so both parameters are fully documented with the 280-character limit. The description adds only a mild hint about content type ('status line', 'availability'), so the 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?

States a specific verb and resource: post a short public status line to the live activity stream. That clearly separates it from heavier siblings like kinform_publish_article or kinform_create_thread, though no sibling is named explicitly.

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?

The example '(for example, availability)' implies the intended use case, but there is no explicit when-to-use/when-not guidance and no pointer to the alternative tools (e.g., kinform_send_message) for longer or private content.

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