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

The readOnlyHint annotation already establishes this is a safe read. The description adds one genuine behavioral fact beyond the annotations: results are returned 'newest first'. It says nothing about pagination boundaries, whether the catalogue scope is workspace-wide, or volume of results, so the addition is modest.

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 sentence that front-loads the verb and resource, lists the change categories, and ends with the ordering guarantee. No filler, nothing that could be cut without losing information.

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 no output schema, the description usefully enumerates what each record represents (increases, decreases, additions, removals) and the sort order. However, it leaves the days window and limit semantics unexplained, which matters for an agent that needs to control the query's time horizon and result size.

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 0% for both parameters; the schema gives types, defaults and bounds but no meaning. The description's 'recent' loosely gestures at the days window but never defines it, and the limit/pagination parameter is not addressed at all. It does not compensate for the coverage gap.

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?

Specific verb ('Lists') plus resource ('recent price changes across the catalogue') with an enumeration of the four change categories and their ordering. It is clearly distinguishable from price_history or get_model_price in substance, though it never names those siblings. Clear, but no explicit sibling differentiation.

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 word 'recent' weakly implies a time-bounded browsing use case, but there is no statement of when to prefer this over price_history or get_model_price, no exclusions, and no prerequisites. An agent must infer the choice entirely from the tool name.

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