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

Annotations already declare read-only, idempotent, non-destructive, and closed-world behavior, so safety is fully covered without the description. The one piece of added value is the return shape ('title, summary, and canonical URL'), which is not otherwise available since there is no output schema; however, nothing is said about result volume, pagination beyond the limit parameter, or ordering.

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?

Two short sentences, zero filler, with the scope and the return fields front-loaded. Nothing is redundant with the title or annotations.

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 simple read-only list tool, the description covers purpose and return fields, and annotations carry the safety profile. The meaningful gap is the undocumented limit parameter and resulting pagination behavior, which an agent needs in order to page through more than the default of 10 items.

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 50%: 'type' is documented in the schema (with an enum of five values), but 'limit' has no description in either the schema or the tool description. The description's 'by content type' merely restates the required parameter, and it says nothing about the limit parameter's pagination role, so it fails to compensate for the coverage gap.

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 Growth Choice published documents') plus the organizing dimension ('by content type'), which is enough to distinguish it from get_doc (single fetch) and search_docs (query-based). It never names those siblings, so differentiation is inferred rather than explicit.

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 word 'List' plus 'by content type' implies a browse/enumerate use case, which contrasts implicitly with a lookup or search tool. However, there is no explicit 'use this when...' statement or reference to search_docs/get_doc, so the agent must infer the boundary from verb semantics alone.

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