advance_test_outbound_mail

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

Annotations provide minimal safety hints (readOnlyHint=false, destructiveHint=false). The description adds significant value by detailing each state transition and what gets simulated or added (e.g., simulated pages, tracking info, receipt photo). No contradictions with annotations.

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?

Two concise sentences: first states the main purpose, second breaks down state transitions. No wasted words, appropriately front-loaded.

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?

The description explains the full lifecycle for a test mode mail record, covering all state transitions. An output schema exists, so return values need not be described. The tool is well specified for an AI agent to invoke correctly.

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 coverage is 100% with one parameter. The description repeats the schema description ('UUID of the test_mode outbound mail record to advance') almost verbatim, adding no new meaning beyond structured data.

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 uses a specific verb ('advance') and clearly identifies the resource ('test_mode outbound mail record') and the action (moving one lifecycle step and queuing webhook). It distinguishes from siblings like create_test_outbound_mail and send_outbound_mail.

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 implies usage for test mode records and enumerates transitions, but does not explicitly state when to use this tool versus alternatives or provide exclusions. Context from sibling names helps but is not explicit.

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