join_room

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

No annotations are provided, so the description must fully disclose behavior. 'Join' implies a state change (agent becomes a member), but it does not specify if joining is persistent, if rooms must exist, or what side effects occur (e.g., receiving messages). Lacks details on error handling or security.

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 description is a single sentence, very concise. It could be slightly expanded to include more context, but it is not verbose. Every word is functional.

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?

Given the simplicity of the tool (no output schema, few parameters), the description is minimal but incomplete. It does not mention that the room must exist, what happens if the agent name is taken, or how to leave the room afterwards. More context would help an agent use it correctly.

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% with clear descriptions for both roomName and agentName. The description adds no additional meaning beyond the schema. Baseline 3 is appropriate.

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 'Join communication room for coordination' clearly states the action (join) and the resource (communication room). It distinguishes from siblings like close_room (opposite) and list_rooms (listing). However, it does not elaborate on what 'coordination' entails, leaving some ambiguity.

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?

No explicit guidance on when to use this tool versus alternatives like send_message or broadcast_message_to_agents. The context of joining a room before communicating is implied, but the description does not state prerequisites or when to choose this over other tools.

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