watch_active_threads

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

readOnlyHint=true already covers the safety profile, and the description does add 'live'/'latest' freshness semantics beyond the annotation. However, it does not disclose what counts as an 'active' thread, whether the call blocks or polls, or what the result looks like when no threads are active. No contradiction with annotations.

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?

A single, tightly written sentence with no filler or redundancy. The verb and object are front-loaded, and every word contributes meaning ('latest', 'live', 'active', 'Desktop').

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 zero-parameter, read-only tool with no output schema, the description is nearly complete. The only gaps are the unstated content/shape of the returned summary and the definition of 'active', but these are minor for such a simple tool and the annotation covers the safety dimension.

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?

The tool has zero parameters, so the baseline of 4 applies. There is nothing for the description to explain about parameters, and the empty schema is already unambiguous on its own.

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 names a specific verb ('Return'), a specific resource ('live progress summary'), and a clear scope ('each active Desktop thread'). The plural, thread-wide scoping makes it distinguishable from closely named siblings like watch_thread and get_thread_progress_summary without needing to open any schemas.

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 when-to-use or when-not-to-use guidance is provided, and no alternative tools are named. The description implies a monitoring use case ('latest live progress'), but it never clarifies how this differs from watch_thread (singular) or get_thread_progress_summary, leaving the agent to infer the right selection among overlapping siblings.

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