set_vault_path

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

With no annotations, the description must disclose behavioral traits. It mentions 'session state' which implies a stateful, non-persistent change, but omits whether this overwrites the current vault, whether it requires filesystem access, or what the output schema contains. Lacks transparency about side effects and return behavior.

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 that directly states the purpose. Every word is necessary; no redundant phrases or vague qualifiers. It is optimally concise for a simple setter tool.

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?

Despite having an output schema, the description omits important context such as preconditions, side effects, session state semantics, and how this tool fits with siblings. For a tool with no annotations and minimal schema info, the description is under-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 coverage is 0% and the description adds little beyond the parameter name. 'Vault directory path' essentially restates the param name 'path' without specifying format (absolute/relative), existence requirements, or other constraints the schema does not cover.

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 action (set) and the specific resource (active Obsidian vault directory path) and scope (session state). This distinguishes it from sibling tools like set_workspace_path, which targets a different resource.

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 guidance is provided on when to use this tool versus alternatives like set_workspace_path, or any prerequisites (e.g., must the path exist? Should it be absolute?). The description only states what it does, not when to choose it.

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