List SAS book chapters

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

Annotations already cover the safety profile (readOnly, idempotent, non-destructive), so the description adds the useful behavioral detail that 'hidden or unknown visibility is excluded' and that results carry parent IDs and source provenance. That is real context beyond the annotations, though rate limits and pagination behavior are unmentioned.

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 tightly written sentence with the core purpose and scope front-loaded and no filler. The return-content clause is slightly redundant given an output schema exists, but it is not wasteful enough to penalize further.

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 an output schema present, the description need not explain return shape, and annotations carry the safety profile. The remaining gap is pagination guidance for the limit/offset parameters, which the schema alone only partially conveys.

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 only 33%: materialId is documented in the schema, but limit and offset are listed with no explanation of pagination semantics. The description does not compensate at all, never mentioning paging or how to traverse large chapter lists.

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 and resource ('List accessible book sections/chapters') and scopes it to 'a previously discovered material'. It is clearly distinct from siblings like sas_get_material or sas_list_resources, though it does not name those siblings explicitly.

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?

'For a previously discovered material' implies a prerequisite (the material must be found first), and the schema reinforces this. However, there is no explicit statement of when to prefer this tool over sas_get_material or sas_list_resources, so the routing guidance is only implied.

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