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

Annotations already establish the safe read-only, closed-world profile. The description goes beyond them by disclosing a licensing prerequisite (Pro+ plan) and the provenance of the data (served from the Power Clarity cache), which is actionable context an agent needs before calling.

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 with the gating prerequisite front-loaded in brackets and no filler. Every clause (verb, resource, gloss, source) carries 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?

For a no-parameter read-only listing tool with annotations covering the safety profile and no output schema to explain, the definition is nearly sufficient. It stops just short of noting result ordering, size, or whether the cache can be stale, which is the only remaining gap.

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 tool takes zero parameters, so per the rubric the baseline is 4. There is nothing for the description to clarify beyond what the empty schema already communicates.

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+resource ('List all makers') with a clarifying gloss of the domain term ('citizen developers / AAD users') and the data source (Power Clarity cache). It reads as the plural counterpart to the sibling get_store_maker, though it never explicitly names that alternative to disambiguate.

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 '[Requires Pro+ plan]' prefix is a genuine prerequisite that tells the agent when the call is even permitted, which is more than most list tools offer. However, there is no explicit guidance on when to use this versus get_store_maker for a single maker or the other list_store_* tools.

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