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

The description is only a noun phrase with no behavioral information. There are no annotations, so the description should disclose what the tool does (e.g., returns a list, is read-only, any limitations). It doesn't mention any of this, making it impossible to know the tool's behavior or side effects.

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 concise, a single short phrase with no unnecessary words. It's front-loaded with the subject. However, it may be overly terse, bordering on under-specification, but that's a completeness issue rather than conciseness.

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?

Given no output schema and no annotations, the description should explain what the tool returns and its behavior. It only gives a subject label, leaving out the action and any return information. This is inadequate for an agent to select and invoke the tool correctly.

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 has zero parameters, so the baseline is 4. The description doesn't need to explain parameters because there are none. It neither adds nor detracts from parameter understanding.

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 names a specific resource (LPF filtration units for pools, 400-900 mm) but lacks an explicit verb like 'get' or 'list'. It's clear what subject it concerns, but not what action it performs, leaving the tool's purpose to be inferred from its name.

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?

No guidance is provided on when to use this tool versus alternatives. It doesn't mention any prerequisites, exclusions, or differentiate from sibling tools like get_pool_specs or get_accessories. The context implies it is for retrieving filter info, but that's not stated.

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