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

With no annotations provided, the description carries the burden, and it does disclose a meaningful behavior: agents holding a read_room request are woken instantly. However, it does not mention whether messages are persisted, broadcast to all participants, or whether there are any side effects beyond delivery.

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 sentences with no filler: the first states the action and target, the second explains the key consequence. The most important information is front-loaded and every clause earns its 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?

The description is adequate for a simple send-message tool, especially since the schema covers all parameters. However, it does not explain what the tool returns, whether messages are visible to all room occupants, or how reply_to affects behavior, leaving some gaps for an agent to infer.

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 100%, so every parameter is already documented in the schema. The description adds no new meaning about parameters such as reply_to or room, meeting the baseline without compensating beyond it.

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 uses a clear verb and resource ('Say something in a room') and the wake-up detail distinguishes it from read_room, which is about receiving rather than sending. It does not explicitly name a sibling alternative, but the action is unambiguous and no other sibling appears to send room messages.

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 phrase 'a question here can get an answer in seconds' provides clear context for when to use the tool: when immediate responses from active readers are desired. It does not state exclusions or alternatives, but the intended use case is evident.

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