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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false, and openWorldHint=false, so the safety profile is fully covered. The description adds one useful behavioral fact — that only 'published' and 'public' services are returned, implying unpublished ones are excluded. It says nothing about result size, ordering, or pagination, so it adds moderate rather than rich context.

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?

One front-loaded sentence with zero filler. It is efficient, though bordering on under-specified given the presence of an undocumented parameter and no output shape.

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?

There is no output schema, so the description should ideally hint at the return shape (list of service summaries? IDs to feed into get_service?) and at the language parameter's effect. Annotations cover safety, so the gap is mainly in return-value expectations and parameter behavior — enough to be adequate but not complete.

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 0% and the description never mentions the single 'language' parameter, its zh-CN default, or what happens to returned content when a language is chosen. The enum values are self-explanatory, but the description contributes no semantics at all for the only parameter.

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+resource: 'List published public services.' The plural 'list' plus 'published public' scoping distinguishes it reasonably from get_service (singular detail fetch). It does not explicitly contrast with list_cases/list_faq/list_resources, but the resource noun itself carries the differentiation.

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 on when to use this versus get_service for detail, or versus the other list_* siblings. The only implicit signal is that it lists rather than fetches a single record. No prerequisites, exclusions, or alternative routing are given.

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