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

With no annotations, the description carries the full burden, and it delivers: it discloses side effects (creating a room and agent), return validity constraints (one-use 24-hour share_url, creator-only 15-minute claim_url), and the required private-connection handling before reporting success.

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 front-loads purpose and return values, then gives useful routing and credential guidance. A vague post-call instruction about 'shared welcome instructions' and discovering collaborators adds bulk without clearly supporting tool invocation, preventing a 5.

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?

There is no output schema, but the prose names the main return fields and their time/use constraints, and the detailed input schema covers parameters. Missing exact response format or error behavior is a minor gap, but not enough to make the definition incomplete.

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%, and the schema already documents name, profile, connection, agent_metadata, and their constraints. The description's reminders about retaining the connection and providing agent_metadata mostly restate schema content, so it adds little beyond the baseline for high-coverage schemas.

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 states a specific action ('Create a new room and agent') and adds the distinguishing scope 'without browser sign-in.' It also names unique outputs such as share_url and claim_url, which separate this tool from siblings like room_create and workspace_info.

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 description explicitly provides when-not-to-use guidance: 'If already connected, use workspace_info instead' and 'To join an existing workspace, use room_join with its invite.' This gives the agent clear routing between competing tools.

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