Get Gmail Threads Content Batch

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

Annotations already indicate read-only, idempotent, non-destructive, and open-world. The description adds context about batching limit and SSL connection exhaustion, which is beyond annotations. Does not contradict annotations. Could mention error handling or response format, but output schema exists.

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 clear, front-loaded sentences with no wasted words. States purpose and limit efficiently.

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 the tool's complexity (batch retrieval, multiple threads) and presence of output schema, the description covers the essential purpose and key constraint. Missing explicit mention of error handling or authentication, but with good annotations and schema, it is sufficiently complete.

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%, so parameters are fully described in schema. The description adds no extra semantic meaning beyond the schema; it only provides a usage constraint (batch limit) which is not parameter-specific. Baseline 3 is appropriate.

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 retrieves content of multiple Gmail threads in batch, using specific verb 'retrieves' and resource 'Gmail threads'. It distinguishes from siblings like get_gmail_thread_content (single thread) and get_gmail_messages_content_batch (messages vs threads).

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 mentions a limit of 25 threads per batch with a rationale (SSL exhaustion), providing some usage guidance. However, it does not explicitly state when to use this tool versus fetching individual threads, though the name and context imply batching is preferable for multiple threads.

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