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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint=false, so the safety profile is covered. The description adds the live temporal scope ('current activity pulse', 'next 24 hours'), which is useful, but it does not describe behavior for unknown cities or how 'withheld count' is computed.

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 one compact sentence that front-loads the purpose and lists the returned metrics without filler. The only cost is that 'band' and 'withheld count' are packed in without explanation, but the structure itself is efficient.

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?

The tool is simple—one optional parameter, no nested objects, and thorough annotations—so the description does not need to do heavy lifting. Still, with no output schema, the agent must infer the response shape and the meaning of 'band' and 'withheld count,' which are not defined anywhere.

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 input schema fully documents the only parameter: an optional city slug that defaults to the bound city. The description adds no new meaning about the parameter beyond reiterating the single-city scope, so the schema carries the burden, which is acceptable at 100% coverage.

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 tool name and title establish the verb and resource, and the description specifies the exact metrics returned for a single city: band, withheld count, venue count, and upcoming public events. It is clearly scoped to one city, which distinguishes it from list-level siblings, though terms like 'band' and 'withheld count' are unexplained jargon.

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 'one city' scope and optional city parameter imply this is for a per-city status lookup rather than listing or searching. However, the description does not say when to choose this over siblings like get_city or whats_happening, or when not to use it, leaving usage to inference.

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