Send a requested testimonial email

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

Annotations already declare destructiveHint=true, idempotentHint=false, and openWorldHint=true. The description adds meaningful context beyond those flags: 'No dry run, retry or delivery guarantee' tells the agent there is no rollback or safe re-attempt, and 'Side-effecting GET' warns that the HTTP method is misleading. It stops short of describing failure/error behavior.

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?

Three terse sentences with zero waste, front-loading the highest-risk fact (side-effecting send) first. Each sentence earns its place by adding a distinct behavioral fact.

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?

For a destructive, non-idempotent send with no output schema, the description covers the side effect, the mandatory confirmation gate, and the absence of dry run/retry/delivery guarantees. It is nearly complete; only error/failure handling is left unstated.

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 all six parameters including the confirm flag and the account vs. tenant distinction. The description adds no parameter-level syntax or constraints, so this sits at the baseline for fully covered schemas.

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 states a specific verb and resource: it sends a real request email (a testimonial request). It distinguishes the side-effecting nature from sibling submission tools like submit_text_testimonial and submit_video_testimonial, though it does not explicitly name any sibling to route between them.

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?

It states a clear prerequisite rather than a use case: 'Explicit local confirmation is mandatory,' which tells the agent what must happen before calling. However, it offers no guidance on when to choose this tool over the sibling submit_* or batch tools, leaving the selection decision implicit.

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