getAppControlCategories

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

No annotations are provided, so the description carries the full burden. It makes clear this is a read-only listing of definitions, which is a useful trait, but says nothing about permissions, response shape, pagination, or whether the list is site-scoped or global in practice. For a simple read this is adequate but thin.

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 resource stated first and the clarification about 'definitions used in application control rules' appended. No waste, though the parenthetical '(families)' and trailing clause slightly overlap in meaning.

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 zero-required-parameter read tool with a fully documented schema and no output schema, the description conveys enough to call it correctly and know what it returns (available app category definitions). It could note the site scoping and typical response fields, but nothing critical is missing.

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%: siteId already documents the OMADA_SITE_ID fallback and points to listSites, and customHeaders is explained as rarely needed. The description adds no parameter meaning beyond the schema, so the 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?

States a specific verb ('Get') and resource ('application control categories (families)') and clarifies it is the list of category definitions used in application control rules. This distinguishes it implicitly from sibling tools like getAppControlRules or getApplicationControlStatus, though it never names them.

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?

Usage is only implied: an agent can infer it should call this to discover category/family definitions before interpreting application control rules. There is no explicit 'use this when...' statement, no exclusion, and no named alternative such as getApplicationControlStatus or listSites.

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