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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is covered; the description only adds that the dataset is complete (7,900 comuni) and what fields it carries. It says nothing about the 50-result cap, ordering, or how results are shaped — context an agent would want when paging or ranking.

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 the dataset scope first and the differentiating content (relocation programmes with concrete examples) second. Nothing is redundant or padded.

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?

No output schema exists and the tool has six optional filters, so the description should carry more than field names — nothing on what a result record looks like beyond 'population, coordinates, programme', and no routing versus siblings. The dataset-size and completeness note is the main compensating detail; the rest is thin for a search tool with this many knobs.

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 100%, so q, region, the population bounds, limit and with_programmes are all documented in the schema. The description's mention of 'any programme that pays people to move there' loosely hints at with_programmes but adds no matching, format or default behaviour, so baseline 3 applies.

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 the resource precisely and scopes it (all 7,900 Italian municipalities with population, coordinates and relocation-programme flags), so an agent knows what data sits behind the tool. It never states the verb ('search/filter') and does not differentiate from siblings like relocation_programmes or search_incentives, which also touch this domain.

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?

There is no when-to-use / when-not-to-use guidance at all. Given siblings such as get_place, relocation_programmes and search_incentives, the description should say whether this is the entry point for name/region lookups versus the programme-specific tools; it stays silent.

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