manage_session

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

With no annotations provided, the description carries full burden but offers minimal behavioral context. It mentions two actions but doesn't disclose what 'approve_plan' does (e.g., triggers execution, changes session state), what 'send_message' is for (e.g., feedback to Jules, user notification), or any side effects, permissions, or rate limits. This leaves critical gaps for a mutation tool.

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 extremely concise with just one sentence that front-loads the core purpose. Every word earns its place, and there's no redundancy or fluff, making it efficient for quick understanding.

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 (managing sessions with mutations), lack of annotations, and no output schema, the description is incomplete. It doesn't explain what happens after actions (e.g., response format, session state changes), error conditions, or how it fits into broader workflows with sibling tools, leaving the agent under-informed.

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 schema already documents all parameters well. The description adds no additional meaning beyond implying that 'message' is tied to 'send_message', which is already clear from the schema's enum and description. This meets the baseline for high schema coverage.

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's purpose with specific verbs ('approve plans', 'send feedback') and resource ('active Jules session'), making it immediately understandable. However, it doesn't differentiate this tool from its siblings like 'get_session_status' or explain how session management relates to other session/coding/scheduling tools.

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 no guidance on when to use this tool versus alternatives. It doesn't mention prerequisites (e.g., needing an active session), exclusions, or relationships with sibling tools like 'get_session_status' for checking session state or 'create_coding_task' for task creation.

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