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

No annotations exist, so the description carries the full behavioral burden. It conveys ordering ('newest') but says nothing about the default result count, whether the limit caps results, pagination behavior, or backing data freshness, all of which matter for a list tool with a limit parameter.

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 front-loaded sentence with no filler; the resource, recency ordering, and optional narrowing all appear before any wasted words.

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?

With three parameters, 33% schema coverage, no annotations, and no output schema, the definition is minimal but workable. It leaves the limit/default behavior and the shape of returned permits unexplained, which an agent would want before calling.

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 coverage is only 33%, so the description must compensate. It successfully clarifies that 'area' is a ZIP code for most cities or a district number, but 'limit' is never mentioned and 'city' only appears indirectly as the scoping noun, leaving the result-cap semantics undocumented.

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 resource (building permits), a recency qualifier ('newest'), and a scope constraint (a city, optionally narrowed to a ZIP code or district). An agent can distinguish it from get_permit (singular) and permits_at_address by implication, though no sibling is named explicitly.

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?

Usage is implied by 'newest' and the optional area filter, but the description never says when to prefer this over permits_at_address or get_permit, nor any prerequisites or exclusions. The context is inferable rather than stated.

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