validate_llpin

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

Annotations already indicate readOnlyHint and idempotentHint, which the description does not contradict. The description does not add behavioral details beyond the obvious validation action, but given the strong annotation coverage, it is adequate.

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 with two short sentences. It front-loads the key information (what it validates and the acronym meaning) and contains no filler or redundant 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?

Given the tool's simplicity (single parameter, validation-only, with output schema available), the description is complete enough. It tells the agent the tool's purpose and when to use it. The output schema covers return values, so no further description is needed.

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 input schema provides full coverage (100%) and includes format guidance ('AAA-XXXX or AAAXXXX') for the 'llpin' parameter. The description does not add any additional semantics beyond what the schema already describes, meeting the baseline for high coverage.

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 validates LLPINs and expands the acronym. It is specific about the resource (LLPIN) and action (validate). However, it does not explicitly differentiate from sibling validation tools like 'validate_cin' or 'validate_gstin', though the name and context suffice.

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 says 'Use when verifying LLP registration numbers,' which gives a clear context of use. But it does not provide when-not-to-use or mention alternatives, leaving the agent without exclusions.

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