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

Annotations already cover the safety profile (readOnlyHint, idempotentHint, non-destructive), and the description usefully discloses the data provenance ('real closed deals', 'same segment'). It says nothing about latency, rate limits, how the fair range is returned, or what happens when no comparables exist.

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 core action and the comparison basis come first.

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 10-parameter tool with no output schema and no explicit guidance on the buy/rent default, the description is thin. It conveys the input premise but not what the agent gets back (range, verdict, confidence) or how intent alters the price_aed meaning beyond what the schema states.

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 80% and individual parameters are well documented (bedrooms vs layout, building requiring 6+ DLD sales, intent-dependent price semantics). The description adds only the notion of a 'segment', which the schema already implies via layout/area. Baseline 3 is appropriate.

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 verb and resource: it compares an asking price or rent against a fair range derived from closed deals. The scope ('same segment') is clear, but it never distinguishes itself from siblings like estimate_rent or get_comparables, which sound like they overlap.

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?

Use is only implied: an agent can infer it applies when the user supplies an asking price or rent to validate. There is no explicit when-to-use, when-not-to-use, or routing to estimate_rent/get_comparables, and no mention of prerequisites such as needing an area from list_areas.

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