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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and closed-world scope, so the safety profile is covered. The description adds genuine value by disclosing the returned content (time slots, dose amounts per slot, with_food flags, frequency), which matters because there is no output schema. It stops short of 5 by omitting any mention of pagination or shape limits, though for a personal schedule these are minor.

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?

A single sentence that front-loads the purpose and then enumerates the return payload with no filler. Every listed item earns its place given the absence of an output 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 a no-parameter read tool with full annotation coverage but no output schema, the description supplies enough about the returned structure for an agent to use the result. A note on how to modify the schedule (suppco_update_product_schedule) would close the remaining gap.

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 baseline is 4. The description correctly implies no inputs are required to fetch the user's own schedule, and nothing in the schema needs compensating for.

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 ('Get the user's current supplement schedule') and enumerates exactly what the schedule contains — time slots, per-slot doses, with_food flags, frequency. It does not explicitly distinguish itself from nearby siblings like suppco_get_my_stack or suppco_get_my_protocols, so it stops 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?

Read usage is implied by 'current schedule', but there is no statement of when to call this versus suppco_get_my_stack, suppco_get_my_protocols, or the mutating suppco_update_product_schedule. No prerequisites or exclusions are given, leaving the agent to infer the routing.

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