sendgrid_get_stats

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

No annotations are provided, so the description carries the full burden. It only states 'get', implying a read operation, but does not disclose any potential side effects, rate limits, or what permissions are needed. It lacks behavioral transparency.

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 concise and front-loaded with the core action. However, it could be slightly expanded to add value without losing conciseness, such as mentioning default date range.

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 no output schema and 4 parameters including optional aggregation, the description does not explain the return format or what 'statistics' includes. It is incomplete for an API that returns a non-trivial response.

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 schema descriptions cover all parameters comprehensively (100% coverage), so the tool description adds no additional semantic value. The baseline score of 3 is appropriate given the schema already provides meaning.

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 retrieves SendGrid email statistics for a date range. It distinguishes itself from sibling tools like sendgrid_add_contact or sendgrid_send_email by focusing on statistics, but could be more specific about the metrics returned.

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 guidance is provided on when to use this tool versus other SendGrid tools. There is no mention of alternatives or context such as needing to set up statistics tracking first.

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