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

Annotations already declare readOnlyHint, idempotentHint, non-destructive, and openWorld=false, so the safety profile is fully covered. The description adds the feature set (pagination/search/date/sort), which is useful context but stops short of explaining pagination mechanics or result ordering beyond what the schema hints.

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 tight sentences, front-loaded with the resource and followed by the capability summary. No filler, though the second sentence is essentially a keyword list rather than value-adding guidance.

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 7 optional parameters, full schema coverage, and annotations covering the safety profile, the definition is serviceable; there is no output schema, so return shape need not be explained. The remaining gap is the lack of sibling differentiation, which matters given many overlapping listing tools.

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 100%, so every parameter is already documented. The description's feature list (pagination, search, date filtering, sorting) loosely maps to query, date_from/date_to, sort, and the before_* cursors but adds no syntax, defaults, or format detail beyond the schema.

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 clear verb and resource ("List saved articles") and the "saved" qualifier scopes it to saved content. However, it never distinguishes this from close siblings like get_articles, get_recently_read, or get_highlights, so an agent must guess which listing tool applies.

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 second sentence enumerates capabilities (pagination, search, date filtering, sorting) but gives no when-to-use guidance, no exclusions, and no mention of alternative listing tools. Nothing tells the agent when this beats get_articles or get_recently_read.

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