session-checkpoint

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

With no annotations, the description must disclose side effects and behavior. 'Snapshot' suggests a non-destructive read, but it does not clarify whether the object is modified, how the checkpoint is stored, or what happens on rollback. It adds minimal context beyond the tool name, lacking important details for a potentially state-changing operation.

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?

One concise sentence that gets straight to the point, front-loading the primary action and purpose. No wasted words.

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 a simple tool with optional parameters and no output schema, the description is minimal but adequate to understand the core function. However, it lacks context about the checkpoint lifecycle, how rollback works, or when to create a checkpoint, leaving gaps for an agent to infer.

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 0% and the description does not explain the parameters. While the schema titles provide some basic meaning (label auto-generated, object defaults to active), the description adds no extra value for parameter usage or format.

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 it snapshots mesh data and transform for rollback, using specific terms. It distinguishes from sibling tools like session-revert and session-list_checkpoints by focusing on the creation of a checkpoint rather than reverting or listing.

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 purpose implies using it before an edit to enable rollback, but there is no explicit guidance on when to use it versus alternatives, no mention of session-revert or list_checkpoints, and no exclusions or prerequisites.

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