checkpoint_create

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

Because no annotations are present, the description carries the full disclosure burden. It does add useful behavioral context: checkpoints must be redacted, must not include credentials/full prompts/full responses, and live in shared local state. However, it does not disclose side effects like overwriting an existing checkpoint, idempotency, or failure behavior, so disclosure is only partial.

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 two short sentences that front-load the primary purpose before adding the security constraint. Every sentence earns its place, and there is no unnecessary detail.

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 tool with nine parameters, no output schema, no annotations, and four required fields, this description leaves too much unstated: how to fill required parameters, whether the checkpoint is keyed or overwritten, and what the tool returns. It provides the core purpose and redaction guideline, but an agent would still need to infer or probe much of the contract.

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?

With only 22% schema description coverage, the description is expected to compensate for undocumented parameters, but it names none of them. The redaction warning provides generic content guidance but does not clarify the meanings of objective, completed, pending, lastTest, gitStatus, resumeNotes, pendingCommand, or taskId beyond what their names imply.

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 uses the specific verb 'persist' with the resource 'checkpoint' and the destination 'shared local state', so it clearly states what the tool does. It also distinguishes the create/persist behavior from the sibling checkpoint_get by naming the action 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 the tool is used when an agent wants to save a resumable checkpoint, but it does not state when to choose this tool over the sibling tools or provide any exclusion criteria. There is no explicit mention of checkpoint_get for retrieval, so usage guidance remains implicit rather than explicit.

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