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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is clear. The description adds no behavioral context beyond what the schema describes (e.g., it doesn't mention auth, rate limits, or side effects). Minor branding fluff does not detract but also doesn't add value.

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 concise sentences that front-load the core purpose. The inclusion of 'Powered by CoachSync.io' is minor branding fluff but not harmful. Overall efficient with no unnecessary details.

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 explains the general purpose but fails to describe the output format (e.g., list of plates per side) or handle edge cases. Since no output schema exists, the description should provide more context on what the tool returns. This leaves gaps for the agent.

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 is already documented clearly. The tool description reinforces the idea of custom bar weights and plate inventories but does not add new semantic meaning beyond the schema descriptions. Baseline of 3 is appropriate.

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 calculates plate loading for a target weight, using specific verbs and resource (barbell plates). It mentions custom bar weights and plate inventories, which adds clarity. However, it does not explicitly differentiate from sibling tools like novice_lp_generator or warmup_calculator, so it's not 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?

The description implies usage for calculating plate loads in home gyms with custom options, but does not provide explicit when-to-use or when-not-to-use guidance relative to alternatives. Usage context is inferred but not directly stated.

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