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

No annotations provided, so the description must fully cover behavioral traits. It only states the return format (input, result, decimal). Missing details like read-only nature, destructive potential, error handling (e.g., division by zero), rate limits, or authentication needs.

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?

Description is a single sentence plus a brief return note and a cross-reference. It is extremely concise, front-loaded with the core purpose, and contains no unnecessary words.

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?

Output schema exists, so return values are covered. The description explains the operations and points to bundling for related tools. However, it omits error handling (e.g., invalid operations, division by zero) and edge cases, which are minor gaps for a simple tool.

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%, with each parameter described minimally. The description does not add extra meaning beyond the schema (e.g., cannot explain constraints like nonzero denominator or defaults). Baseline 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?

Description clearly states it performs fraction operations (add, subtract, multiply, divide, simplify) and returns input, result, decimal. However, the sibling tool 'calculate_fraction_operations' exists with a very similar name, and the description does not distinguish between them, slightly reducing clarity.

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?

No explicit guidance on when to use this tool vs alternatives. The only hint is 'See list_bundles for related math calculators,' which is vague and does not exclude other fraction or math tools. Lacks when/ when-not criteria.

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