jules_session_snapshot

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 only states it 'fetches' data, implying a read-only operation, but does not disclose pagination behavior (e.g., how 'latest page' is determined), ordering, or any limits beyond the page size parameter. The snapshot concept could have been explained further.

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, efficient sentence that front-loads the core purpose. It is appropriately terse, though it sacrifices detail for brevity.

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?

An output schema exists, so return values are covered, but the description omits any explanation of parameters and the exact scope of the 'snapshot' (e.g., whether it includes only the current session state or also metadata). For a combined fetch tool, more detail on the activity page default and how pagination works would be necessary.

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%, and the description does not mention either parameter (session_id or activity_page_size). The agent must rely entirely on the schema, which lacks descriptions. The description adds zero value to parameter understanding.

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 clear verb ('Fetch') and specific resources ('current session object' and 'latest page of activities'), and explicitly notes they are retrieved together. This distinguishes it from individual session/activity tools like jules_get_session and jules_list_activities, though it doesn't name them explicitly.

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 a combined fetch but provides no guidance on when to use this tool versus calling separate session and activity tools. No conditions, prerequisites, or alternatives are mentioned.

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