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

Annotations already declare readOnlyHint, idempotentHint and openWorldHint=false, so the safety profile is covered. The description adds the corpus scope (which guide categories are searchable) but says nothing about result count, ranking, pagination, or empty-result 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?

Two front-loaded sentences with no filler. Minor waste: the trailing pillar list simply repeats the enum values already present in the schema.

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 an all-optional, 3-parameter search tool with full schema coverage and no output schema, the description is adequate: scope and filter axes are clear. What is missing is any signal about how many guides come back or how a zero-match query behaves, which matters for an agent choosing between this and get_guide.

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%, with each parameter's description already documenting format and examples. The description only restates that searching happens by keyword, topic or month, adding no syntax or constraint detail beyond the schema, so baseline 3 applies.

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 ('Find our practical guides') and enumerates the content scope (planting calendar, watering, lawns, indoor plants, costs, approvals). It does not explicitly contrast with siblings such as get_guide or search_plants, but the multi-result keyword/topic/month framing is distinct enough for an agent to select it.

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?

Implies usage through the filter axes (keyword, topic, month) but never states when this tool is preferable to get_guide (single-guide fetch) or search_plants. No exclusions, prerequisites, or fallback guidance are given.

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