get_latest_email

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

No annotations were provided, so the description bears full burden. It does not disclose whether the email is marked as read (despite a mark_as_read parameter), side effects, or read-only nature. The simple description 'Read and return' is insufficient for behavioral clarity.

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 with no wasted words. However, it is borderline too terse, missing critical context that would not significantly lengthen it.

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 tool is simple (two parameters, output schema present), but the description does not connect it to sibling tools in the email verification flow, nor explain what 'full email' means or how the output is structured. It is adequate for a minimal tool but lacks contextual richness.

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?

With 0% schema description coverage, the description should add meaning to parameters. It only mentions 'inbox' generically, not explaining inbox_id or mark_as_read. The schema itself lacks descriptions, and the tool description does not compensate.

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 reads and returns the latest email in an inbox, using specific verbs and resources. It distinguishes itself from siblings like extract_otp_code or wait_for_verification_email.

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 on when to use this tool versus alternatives like search_emails or when not to use it. The description lacks context for appropriate use cases.

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