create_session_local_all

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

The description adds no behavioral detail beyond the annotations. It does not explain what creating or acting on a local-all session entails, what side effects may occur, or why idempotentHint is true, so the description carries little disclosure burden and fails to add context.

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 compact and front-loads the core action and endpoint. The brief 'Args' block is useful and avoids unnecessary prose, though the vague 'act on' language prevents a top score.

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 the generic body schema, the absence of an output schema description, and a sibling tool with a near-identical name, the description leaves significant ambiguity about what this endpoint is for and what a successful call produces. The pointer to GET/schema helps but does not complete the picture.

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?

For a single 'body' parameter with schema coverage of 0%, the description usefully identifies it as the request payload and instructs the agent to consult the matching GET or /schema endpoint for the expected fields. This compensates for the opaque additionalProperties: true schema, though it does not enumerate concrete fields.

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 names the resource ('session local-all') and a verb ('Create or act'), but 'act on' is vague and does not specify what operations are performed. It does not differentiate from the closely named sibling create_session_local, leaving an agent uncertain about the tool's exact scope.

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 explains when to choose this tool over alternatives such as create_session_local or create_session_by_id_close. The only operative instruction is to read the matching GET or /schema endpoint first, which is a parameter-discovery tip rather than when-to-use guidance.

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