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

Annotations already declare readOnlyHint, idempotentHint and destructiveHint=false, so the safety profile is covered. The description adds meaningful context beyond that: the return payload contains every product with dosages, daily totals, and the product IDs that other SuppCo tools accept, which tells the agent this is a dependency-resolution read.

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 tight sentences that lead with the usage trigger and follow with the payload contents. The 'recommending, comparing, swapping or removing' list is mildly enumerative but each item signals a real downstream workflow, so it mostly earns its place.

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?

With no output schema, the description carries the burden of describing returns and does so well: full product list, dosages, daily totals, and reusable product IDs. For a zero-parameter read tool with rich annotations, nothing an agent needs to call it correctly 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 tool takes zero parameters, so the schema baseline is 4. The description correctly implies no inputs are needed (it operates on the signed-in user) and adds no misleading parameter expectations.

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+resource ('signed-in user's current supplements') and immediately scopes the resource as the user's stack with dosages and daily totals. It is clearly distinguishable from sibling getters like suppco_get_my_cart, suppco_get_my_nutrient_plan, and suppco_get_my_protocols.

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 when to use it ('before recommending, comparing, swapping or removing products'), which maps to concrete workflows involving siblings like suppco_swap_products and suppco_remove_from_stack. There is no when-not guidance or named alternative, so it falls short of a 5.

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