email_delete

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

No annotations provided. Description adds irreversible nature but lacks details on auth requirements, rate limits, or what happens to associated data. Adequate for a simple destructive action.

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?

Single sentence plus warning, front-loaded with action and critical caution. No unnecessary 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?

Tool is simple with 2 params and no output schema. Description covers purpose and parameter names, but does not explain return values or success behavior. Minor gap, but overall sufficient.

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%, both parameters are clearly documented in schema. Description does not add extra meaning beyond schema, meeting baseline expectation.

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?

Clearly states 'permanently delete one or more messages', specifying action, object, and scope. Distinguishes from sibling email_trash which likely moves to trash instead of permanent deletion.

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?

Explicitly warns that deletion is permanent and cannot be undone, implying use when final removal is intended. Does not name alternatives like email_trash but context provides clear distinction.

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