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

Annotations already disclose non-read-only, non-idempotent, open-world, non-destructive behavior. The description confirms a creation action and mentions the returned links, but adds nothing about permissions, whether rooms persist, or what 'words'/'routine'/'template' do. The visible text also trails off mid-clause, leaving the behavioral note unfinished.

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 action and its payoff are front-loaded in a single compact sentence, which is good. But the sentence is truncated mid-thought, so the entry is incomplete rather than genuinely concise.

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 tool with three undocumented parameters, a nested object, no output schema, and no annotations beyond safety hints, the description should carry the load — instead it is cut off and says nothing about inputs or the shape of the returned links.

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?

Three parameters (words, routine, template — including a nested object) with 0% schema description coverage, and the description explains none of them. An agent has no basis for choosing values for 'words', 'routine', or 'template'.

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 ('Make a new collab.demo room') plus the immediate outcome ('get its links'), which separates it from siblings like collab_join and collab_state. It does not explicitly name those alternatives, so it stops short of a 5.

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 parenthetical tells the agent what to do with the result ('send `link` to the people you work with'), which implies the collaboration workflow this tool starts. However, it never states when to use this versus collab_join/collab_module_register, nor any preconditions, and the sentence is cut off.

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