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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so safety is covered. The description adds real behavior beyond that: the result set enumerates towns/authorities with their kind and class, and an omitted query produces the full list. Return-shape and pagination details are absent, but the tool is a simple static lookup.

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 sentences, front-loaded with the when-to-use condition followed by the return behavior. Every clause carries information, including the default no-query case, with no filler.

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 one-optional-parameter lookup with no output schema, the description covers trigger, domain (Maharashtra), returned fields, and the no-query default, which is enough to call it correctly. It never explains what the 'kind' and 'class' values can be, a minor gap given there is no output schema to enumerate them.

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 100% and the parameter description already says 'part of a name; leave out for every town and authority', which duplicates the description's no-query behavior. The hint that misspelled names are tolerated adds a mild nuance (fuzzy/partial matching) but does not extend semantics much beyond the schema.

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 second sentence states the specific resource and scope: Maharashtra towns and planning authorities, returned with their kind and class. This is clearly distinguishable from the sibling design/clause/feasibility tools. It is not a crisp verb-first statement, but the resource and its covered domain are unambiguous.

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 opening clause gives an explicit trigger: use it when the town or authority of a plot is unclear or misspelled. It also covers the degenerate case (empty query returns everything). It names no alternative tool, but no sibling appears to overlap on town/authority lookup, so there is little to disambiguate.

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