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 largely covered. The description adds genuinely useful context beyond that: 'Nothing is sent until they press send in WhatsApp,' which tells the agent the tool has no side effects and that delivery depends on a human action.

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 sentences, no waste: the first defines the artifact and its payload, the second carries the key behavioral caveat. Front-loaded and appropriately sized.

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?

The description effectively communicates the return value (a link with a pre-filled message) even though no output schema exists, and it covers the no-side-effect behavior. Minor gap: it doesn't state what happens with omitted optional parameters beyond the topic default already in the schema.

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 each parameter (note, topic, plants, community) is already documented with type, length limits and the topic default rule. The description only names the same fields, adding no syntax, formatting or ordering detail beyond the schema; 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: it produces a WhatsApp click-to-chat link with a pre-filled message, and enumerates the content it embeds (topic, plants, community, note). This is clear and distinguishable from the read-only content siblings (get_plant, get_guide), though it does not explicitly contrast itself with build_designer_link, the other link-generating sibling.

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?

Gives a concrete usage condition: 'when the person wants a quote, a visit or help from our team.' That is a clear triggering scenario, but no exclusions or named alternatives are offered, so an agent must infer when to prefer this over build_designer_link.

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