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

With no annotations provided, the description carries the full burden of behavioral disclosure. It does disclose the $0.15 Base USDC cost and that the report comes from supplied snapshots, but it does not state what the input snapshots must look like, whether any data leaves the environment, what side effects occur, or what the output format is.

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?

The description is short and front-loaded with the core purpose, followed by the cost in a separate sentence. It contains no filler, but the brevity also reflects a lack of necessary detail.

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?

The tool has an opaque nested input schema, no output schema, and no annotations, yet the description provides almost no operational context. An agent would not know how to supply snapshots, what parameters to include, or what the resulting report will contain, making the description materially incomplete.

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?

The input schema is a generic object with no properties and additionalProperties allowed, and schema description coverage is 0%. The description only says 'supplied snapshots' but gives no structure, required fields, or format, so an agent cannot determine how to construct the input correctly.

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 clearly identifies the resource (storefront price and availability) and the output (change report) from supplied snapshots. It is specific enough to distinguish it from sibling report tools like json_change_report or feed_change_report, though it lacks an explicit verb like 'generates' or 'compares.'

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 guidance on when to use this tool versus alternatives such as feed_change_report, json_change_report, or data_quality_profile. The only hint is that snapshots are supplied, but no conditions, exclusions, or alternative naming are provided.

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