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

Annotations already declare readOnly, idempotent, non-destructive, closed-world, so the safety profile is covered. The description adds one genuine behavioral detail — results are ranked matches — but says nothing about result limits, pagination, scoring, or empty-result behavior, and the tool has no output schema to fill that gap.

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, front-loaded with what is searched and followed by the return shape. No filler, though the second sentence is minimal and could carry more useful detail.

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 one-parameter read-only search with full schema coverage and annotations covering safety, the description covers what is searched and what comes back. The notable gap is disambiguation from the crowded sibling set (list_packages, search_capabilities, search_examples), which an agent would need to pick this tool correctly.

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% and the single parameter is documented, so baseline is 3. The description goes one step further by naming the fields the query is matched against (name, capability, description keywords), which meaningfully clarifies matching semantics beyond the schema's generic 'Search keywords'.

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 (Search) and resource (Offline Protocol SDK packages) and even enumerates the searchable fields (name, capability, description keywords). It does not differentiate itself from the many siblings that overlap it, notably list_packages and search_capabilities/search_examples, so an agent still has to guess at boundaries.

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 use case is implied — supply keywords to find matching packages — but there is no explicit statement of when to pick this over list_packages (browse everything) or resolve_packages/get_package. No prerequisites, no exclusions, no alternative routing.

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