get_email_content

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It only restates that the tool gets email content, without clarifying what 'full content' includes, whether attachments are returned, if authentication is required, or whether the operation is read-only. It is not misleading, but it is minimally informative.

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, front-loaded sentence with no wasted words. It communicates the essential action and object clearly without unnecessary elaboration.

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 simple one-parameter retrieval tool, the description provides a minimum viable level of context. However, given the absence of annotations, an output schema, and usage guidance relative to search_gmail, an agent would likely need to infer how to obtain a valid threadId and what the returned content looks like.

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 input schema shows a single required threadId parameter with no description, giving 0% schema description coverage. The description implies that threadId identifies an email thread, but it does not explain the expected format, where the ID comes from, or any constraints. The parameter name is somewhat self-explanatory, but the description adds little beyond that.

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 ('Get') and resource ('full content of an email thread'), making the core operation clear. It does not explicitly distinguish itself from siblings like search_gmail, but the phrase 'full content' implies a retrieval operation rather than a search or listing.

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 about when to use this tool versus alternatives such as search_gmail. There is no mention that this should be called after finding a thread ID via search, nor any indication of when a different retrieval tool would be more appropriate.

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