vibeside_save_session_snapshot

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

With no annotations, the description carries the full burden. It usefully discloses what data is captured (cookies, web storage) and the encryption model (DPAPI or AES-256-GCM), which is real behavioral value, but it is silent on permissions, where the vault lives, whether saving overwrites an existing snapshot, and what the call returns.

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?

A single front-loaded sentence stating the capture target first and the encryption qualifier second. No filler, no redundancy.

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 five-parameter, all-optional, fully-schema-documented tool with no output schema, the description covers what is captured and how it is protected. It is only slightly short on lifecycle context, such as how it relates to the restore/list/delete snapshot siblings and whether repeats overwrite.

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 100%, so every parameter (cipher, passphrase, description, profileName, snapshotName) is already documented in the schema. The description only echoes the cipher concept ('DPAPI or AES-256-GCM') without adding format or constraint detail beyond the schema, so the baseline 3 applies.

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?

States a specific verb ('save snapshot') and resource ('active browser cookies and web storage') plus the storage format ('encrypted vault snapshot'). An agent can distinguish it from restore_session_snapshot and list_session_snapshots by the verb alone, though no sibling is named 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?

No when-to-use guidance, no prerequisites, no mention of the related restore/list/delete snapshot tools. The agent must infer that this pairs with vibeside_restore_session_snapshot purely from naming.

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