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

Annotations already declare readOnlyHint, idempotentHint and non-destructive behaviour, so safety is covered. The description adds real context beyond them: it discloses exactly what comes back in each mode (purpose per template, page link, section headings, opening text, and the FADP/GDPR divergence notes), which is valuable given there is no output schema.

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?

Three sentences, front-loaded with the 'Use when...' trigger and then the two return modes; little waste. The middle sentence is slightly convoluted ('The 39 templates of EasyLPD with what each is for and the link to its page'), which mildly slows parsing but is not padded.

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 and all-optional parameters, the description carries the return-value burden and does so for both modes, and the lang enum default is handled by the schema. Only minor gaps remain, such as whether the result is paginated or truncated to 39 rows and how search results are ranked.

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 coverage is 100%, so the baseline is 3, but the description goes further: it explains that supplying an id switches to single-template detail mode and that search is an optional word-based narrowing. The lang parameter is left to the schema, which documents it adequately with an enum and default.

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 the resource precisely (the 39 EasyLPD data-protection templates) and describes both output modes: a catalogue with purpose and page link, or a single template's section headings, text start and FADP-vs-GDPR differences. It never states the verb explicitly ('returns/lists'), but the second sentence makes the operation unambiguous and clearly separates it from obligation-question siblings.

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 opening 'Use when someone needs a privacy notice, a processor agreement (DPA), a breach procedure, a DPIA...' gives concrete trigger scenarios tied to named document types. It does not explicitly say when not to use it or name a sibling alternative (e.g. fadp_obligations for obligation lookups), so it stops short of full routing guidance.

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