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

The description adds the API endpoint beyond the destructiveHint annotation, but it does not elaborate on effects like rate limits, whether the reminder is sent only to a single signer, or what the response looks like. The annotation already signals destructiveness, so the description adds modest 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?

The description is a single sentence plus the API endpoint, which is efficient and front-loaded. However, the API endpoint inclusion is less useful for an AI agent, and the description could be slightly more helpful with a brief usage hint while staying concise.

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 two well-described parameters, no output schema, and simple functionality, the description covers the basic purpose and action. It lacks usage guidance and behavioral details, but the complexity is low, so it is adequate but not comprehensive.

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 the schema already documents both parameters clearly. The description does not add any extra meaning or constraints beyond what the schema provides, 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 it sends a reminder email to a signer for a pending signature request, with the specific API endpoint. The verb 'remind' and resource 'signature request' are precise, and it naturally distinguishes from sibling tools like cancel or get.

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 does not provide any guidance on when to use this tool versus alternatives such as cancel_signature_request or send_with_template. It lacks context like prerequisites or conditions, making it insufficient for an agent to decide when to invoke it.

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