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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and a closed world, so the safety profile is fully covered and the description need not restate it. The description adds only that the computation depends on germination rate; it says nothing about the default value's effect, rounding, or any assumption behind the formula. Adequate but thin given annotations carry most of the burden.

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, purpose front-loaded, no filler or repetition of the tool name. Every clause conveys information.

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 deterministic calculator with a fully documented input schema, an output schema, and complete annotations, the description covers what an agent needs to select the tool. The remaining gap is sibling disambiguation against the other seed/garden calculators, which is a selection rather than completeness issue.

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% and each parameter has units and bounds documented in the schema, so the description's restatement of surface area, spacing and germination rate adds no meaning beyond it. Baseline 3 is correct when the schema does the heavy lifting.

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 (calculate number of seeds) and names the three inputs that drive the result (surface area, spacing, germination rate), which distinguishes it from near-neighbours like calculate_lawn_seed. It does not, however, explicitly contrast itself with those siblings, so it falls short of a 5.

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?

There is no when-to-use / when-not-to-use guidance at all, and no rule for choosing between this tool and calculate_lawn_seed, calculate_garden_soil or the other gardening calculators in the sibling list. The only steering is a generic 'see list_bundles' pointer, which is navigation rather than usage guidance.

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