Get Gmail Messages Content Batch

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

Annotations already provide readOnlyHint, destructiveHint, idempotentHint, and openWorldHint. The description adds behavioral context beyond annotations by specifying the 25-message limit and the batch nature, which aids in understanding constraints without contradicting annotations.

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 sentences that are direct and front-loaded. Every sentence provides value: the first states the core function, the second adds a practical constraint. No redundant information.

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 presence of annotations, a detailed input schema, and an implied output schema, the description covers the essential aspects. It explains the batch behavior and limit, which is sufficient for an agent to use the tool effectively, though it could mention error handling or ordering.

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%, so the input schema already documents all parameters in detail. The description does not add new information about parameters, thus meets the baseline expectation of 3.

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 messages in batch, with a specific verb and resource. It distinguishes from siblings like get_gmail_message_content (single message) and get_gmail_thread_content (threads) by highlighting the batch aspect.

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 provides context for when to use by mentioning 'to prevent SSL connection exhaustion', but does not explicitly state when not to use or mention alternatives like get_gmail_message_content for single messages. This leaves room for ambiguity.

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