delimit_vault_snapshot

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

With no annotations provided, the description must carry the full burden. It discloses side effects ('writes a snapshot record'), prerequisite ('gated by require_premium'), and internal call ('Calls backends.vault_bridge.snapshot'). Minor: could mention whether snapshot is instantaneous or async, but still very good.

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 well-structured with clear sections (one-liner, usage guidelines, sibling contrast, side effects, args, returns). Every sentence adds value and the key points are front-loaded. 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?

Given no parameters and existence of an output schema, the description covers all necessary context: use cases, exclusions, side effects, prerequisites, and a brief return description ('Dict with snapshot data and next_steps'). It is fully complete for agent decision-making.

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?

The tool has zero parameters and schema coverage is 100%, so baseline is 4. The description explicitly states 'Args: None,' confirming no additional meaning is needed. This is appropriate.

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 the verb 'Capture' and resource 'snapshot of vault state (Pro)'. It distinguishes from sibling tools delimit_vault_health (reports up/down) and delimit_vault_search (for searching content), making the purpose unambiguous.

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?

Explicitly provides when to use ('before a risky vault edit, to have a rollback point') and when NOT to use ('for searching content' or 'checking health only' with specific sibling alternatives named). This is excellent guidance.

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