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

Annotations already declare readOnlyHint=true and destructiveHint=false, so the safety profile is covered. The description adds that returned works carry Siftivo-compatible IDs, which is useful, but it does not discuss pagination, ordering, or other behavioral traits beyond the schema's limit field.

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?

The description is two sentences with no filler. It front-loads the core purpose and immediately provides the most important integration detail: returned IDs are compatible with other Siftivo tools.

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 search tool, the description covers the main invocation context: what is searched, what is returned, and how results connect to other tools. It omits optional details like result ordering or exact response shape, but the annotations and schema cover the rest, and nothing critical is missing.

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?

The input schema describes query and isFiction, and the description adds that query matches titles, authors, and descriptions, giving the query parameter richer meaning than simply 'Words to search for.' The limit parameter is self-explanatory given its schema constraints, so the combination is adequate.

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?

The description states a specific action ('keyword search'), a bounded resource ('Siftivo book catalog'), and matching behavior across titles, authors, and descriptions. It also clarifies that results return IDs other Siftivo tools accept, which usefully distinguishes it from the get_ and recommend_ sibling tools.

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?

It clearly implies when to use the tool: for keyword-based discovery across the catalog. It does not explicitly name alternatives or exclusion criteria, so an agent must infer when to prefer recommend_from_titles or what_to_read_next, but the context is clear enough for most cases.

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