create_snapshot

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

With no annotations provided, the description carries the full burden of behavioral disclosure, and it does so thoroughly: it explains DTG replacement rather than stacking, no overwrite behavior with collision suffixes, source document immutability, permanence, and exclusion from manage_backups. This is unusually complete.

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 dense but efficient, with the main purpose front-loaded. Every sentence adds useful information: naming, collision handling, permanence, relation to backups, and return value. No filler or redundant restatement.

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 no annotations, the description covers the essential behaviors: naming, permanence, no-overwrite guarantee, source immutability, and return path. The main gap is the undocumented dest_dir parameter, and the parameter mapping itself could be more explicit, but the tool is otherwise well specified.

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%, so the description must compensate. It adds meaning for label ('optional short label suffix') and implies file_path is the source document, but dest_dir is never described and its null/default behavior is left to inference. Partial compensation only.

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 starts with a specific verb and resource ('Save a DTG-stamped permanent copy of the document') and gives the exact filename pattern. It also distinguishes snapshots from the automatic prev/anchor backup slots, making it clear what this tool is and how it differs from sibling backup-related operations.

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 clearly situates snapshots against manage_backups and the rotating prev/anchor slots, explaining that snapshots are permanent and never auto-pruned. It does not explicitly phrase when to choose this over alternatives, but the contrast is strong enough for an agent to infer the appropriate use.

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