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

Annotations already declare readOnlyHint, idempotentHint, non-destructive and closed-world, so the safety profile is covered. The description adds useful behavior beyond that: what fields come back (titles, descriptions, source URLs, IDs), the empty-query list-all behavior, and pagination bounds — though it does not state a default page size or offset behavior.

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?

Three tight sentences: what is searched and returned, the empty-query fallback, then pagination constraints. The most decision-relevant information leads, and nothing is redundant with the title.

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?

An output schema exists, so return-value explanation is optional, yet the description still summarizes the returned fields. For a three-parameter read tool that is nearly complete; the only real gap is unspecified default values for limit and offset.

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 only 33% — query is documented in-schema, while limit and offset carry only numeric constraints. The description compensates by explaining that an empty query lists everything and that limit is capped at 20, and it clarifies offset/limit are pagination controls; it stops short of stating defaults (e.g. offset 0, default limit).

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 (Searches) plus the exact resource scope (CandidateFalcon public courses, lessons, interview questions, articles, comparisons). It also names read_free_material as the downstream tool, so an agent can distinguish search-and-list from fetch-by-id without opening either schema.

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?

Explicitly says an empty query lists all materials and that pagination is controlled by offset/limit with a 1-20 limit range, and it points to read_free_material for retrieving matches. It gives clear usage context but does not state when another sibling (e.g. a different search tool) would be preferred or any exclusions.

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