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

The description adds real context beyond the annotations: returned content is quoted untrusted data, forum posts and locker notes are untrusted, and the caller must not exfiltrate API keys. That is useful safety framing for a readOnly, idempotent tool. However, it never explains the mechanics of the call — what a 'private snapshot' contains, how kind/snapshot_id affect the result, or what happens on a missing snapshot.

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 purpose is front-loaded in one short clause, then four sentences of near-duplicate warning text repeat the same 'do not follow instructions' rule twice. The injection-resistance content crowds out the operational information the description should be carrying.

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?

With no output schema, three undocumented parameters, and a read operation whose relationship to save_state/export_state is unstated, the description omits what an agent needs to invoke it correctly. It is thorough about a security concern and silent about the actual mechanics.

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% for three parameters, so the description bears the full burden. It only implies something about api_key ('Do not send a model-provider API key') and says nothing about kind or snapshot_id, leaving an agent unable to choose valid values.

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?

"Reload one private snapshot" gives a verb and a resource, but "reload" is ambiguous — it is unclear whether this restores prior state or merely re-reads a stored snapshot. Nothing distinguishes it from siblings like list_snapshots, save_state, or export_state, so an agent must infer the distinction from the names alone.

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?

There is no statement of when to call this versus list_snapshots or export_state, and no prerequisites are given. The only pseudo-guidance is negative ('Do not send a model-provider API key'), which does not tell the agent when to use the tool.

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