get_gmail_thread_content

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

No annotations are provided, so the description carries the full burden. It describes the retrieval action and output format but lacks behavioral details such as authentication requirements (implied by user_google_email but not stated), rate limits, error conditions, or whether this is a read-only operation. The description doesn't contradict annotations (none provided), but it's insufficient for a tool with no annotation coverage.

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 appropriately sized and front-loaded with the core purpose in the first sentence. The Args and Returns sections are structured but include some redundancy (e.g., 'Required' is implied by the schema). It could be more concise by integrating parameter details more seamlessly.

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?

Given no annotations, 0% schema coverage, and no output schema, the description provides basic purpose and parameter semantics but lacks behavioral transparency and full parameter coverage. It's minimally viable for a retrieval tool but incomplete due to missing details on the 'service' parameter and behavioral aspects like authentication or error handling.

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 0%, so the schema provides no parameter details. The description adds meaning by explaining thread_id ('unique ID of the Gmail thread to retrieve') and user_google_email ('user's Google email address. Required.'), but it omits the 'service' parameter entirely. This partially compensates for the coverage gap but leaves one parameter undocumented.

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 specific action ('retrieves the complete content'), resource ('Gmail conversation thread'), and scope ('including all messages'). It distinguishes from sibling tools like get_gmail_message_content (single message) and get_gmail_messages_content_batch (batch of messages) by specifying it retrieves an entire thread.

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 by specifying it retrieves 'complete content of a Gmail conversation thread,' which suggests when you need all messages in a thread rather than individual messages. However, it doesn't explicitly state when to use this tool versus alternatives like get_gmail_message_content or get_gmail_messages_content_batch, nor does it mention prerequisites or exclusions.

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