room

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

With no annotations, the description must carry the behavioral burden, and it does disclose one non-obvious trait: passing `status` also broadcasts what you are working on, so a nominally read-like call has a publish side effect. It says nothing about permissions, cost, or freshness of the returned state, leaving meaningful gaps for a coordination tool.

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 short sentences, front-loaded with the one-call status summary and then the calling cadence plus the side effect. Nothing is redundant, though the telegraphic style leaves some clauses under-specified rather than fully self-contained.

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?

An output schema exists so return values need not be spelled out, and the description still usefully previews the three payload categories, the invocation cadence, and the status announcement side effect. For a single-optional-parameter tool it is close to sufficient, missing only how the reported 'locked' state relates to the claim/release siblings.

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% and the lone `status` parameter has only a default of '', so the description must supply the meaning — and it does explain that `status` is where you declare your current work and that others will see it. It stops short of format, length, or whether an empty value clears the announcement.

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 concrete verb and resource — fetch 'room status in one call' — and enumerates the payload (who is present, what is locked, what is new), which is far more informative than the opaque name 'room'. It does not, however, explicitly distinguish itself from near-neighbours such as 'owner' or 'inbox', so an agent must still infer the boundary.

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?

It gives an explicit temporal trigger: 'call at the start of work and after completing a step', which is actionable guidance rather than vague context. It names no alternatives or when-not conditions, so the routing value is partial but the usage window is clearly stated.

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