room_create

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

With no annotations, the description carries the behavioral burden. It discloses that is_private creates a token-protected room and that a token is returned and must be securely shared. It does not mention side effects or failure modes, but it adds meaningful context beyond a bare create statement.

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 three concise sentences, front-loaded with the core purpose. Each sentence adds value: purpose, usage context and is_private semantics, and the sibling alternative. No redundancy or filler.

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 simple create tool with an output schema present, the description is complete. It covers usage ordering, privacy options, token sharing, and the alternative tool for joining. The description gives enough context for an agent to correctly invoke the tool.

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 0%, so the description must compensate. It explains the is_private parameter (token-protected vs public) but does not mention the 'name' parameter. However, name is self-explanatory from its schema definition, and the link between is_private and the returned token adds helpful meaning.

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 clearly states a specific verb and resource: 'Create a new collaboration room on the Cloudflare relay.' It distinguishes from sibling tools by explicitly noting that room_join, not this tool, should be used to enter an existing room.

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?

Provides explicit when-to-use context: 'Call after agent_register when starting a new group.' Also gives an explicit alternative/exclusion: 'Use room_join, not this tool, to enter an existing room.' This is a model example of usage guidance.

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