manage_weight_data

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

The description transparently mentions that the tool can delete entries, which is a destructive behavior. Given annotations set destructiveHint=false, the description adds useful context that deletion occurs. It does not elaborate on side effects, but the actions are straightforward.

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?

The description is extremely concise, using bullet points for actions with no extraneous words. Every sentence adds value, making it easy for an agent to parse quickly.

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?

Given the tool's simplicity and the presence of an output schema, the description covers the essential information: actions and their required parameters. It does not detail error handling or return values, but for a basic CRUD tool, this is adequate.

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%, so baseline is 3. The description adds value by mapping actions to parameters (e.g., 'provide weight' for add, 'provide weigh_in_ids' for delete), clarifying the conditional usage beyond the schema's standalone descriptions.

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?

The description clearly states the tool's purpose: 'Add or delete weight entries.' It explicitly lists the two actions, distinguishing itself from sibling tools like query_weight_data which are read-only.

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?

The description provides explicit guidelines for each action, specifying which parameters to provide for 'add' (weight, optionally date) and 'delete' (weigh_in_ids). However, it does not explicitly state when not to use this tool (e.g., for reading data), relying on context from sibling tools.

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