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

With no annotations provided, the description carries the full burden of behavior disclosure. It clearly states the core side effects: saving a summary, persisting remaining insights/decisions, and updating project status and next steps. It does not mention the return shape or whether calling it finalizes the session irreversibly, but it does expose the main state changes.

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 four short, purposeful sentences. It front-loads the most important instruction—CALL AT END OF EVERY SESSION—and then packs in what the tool saves, what it updates, and what the agent should pass. Every sentence contributes something necessary; there is no filler.

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?

For an 8-parameter handoff tool with no annotations and no output schema, the description plus a fully covered parameter schema is largely sufficient. It explains the mandatory timing, what to supply, and the persistence behavior. A small gap is that it does not explicitly address how this interacts with sibling update_project_status or what response the agent should expect after calling it.

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 baseline is 3. The description adds semantic value by clarifying that insights and decisions should only include items not yet stored via add_knowledge(), and by explicitly directing the agent to pass completedTaskIds for tasks finished this session. This goes slightly beyond the schema's field-level descriptions.

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 specific verb and resource: it ends the session and acts as a mandatory handoff tool. It clearly distinguishes itself from sibling knowledge-storage tools by saying it saves only remaining insights/decisions not yet stored via add_knowledge(). The phrase 'Updates project status and next steps' also separates it from simple knowledge-add or task 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 explicitly says when to call it: at the end of every session, with 'mandatory' emphasizing the rule. It also provides guidance on what to pass, especially completedTaskIds for tasks finished this session, and tells the agent to leave out anything already saved via add_knowledge(), which effectively names the alternative tool and the boundary between them.

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