auth_generate_session

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

No annotations are provided, so the description carries the full burden of disclosing behavioral traits. It mentions it will 'generate' something and involves cookie management, but it does not state whether files are written to the directory, whether the api_key is required for external services, whether existing code is overwritten, or what the generated output looks like. This is significant for a code-generation tool with side effects.

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 a single compact sentence with no filler or redundancy, and the core action is front-loaded. It earns a 4 because it is efficient, though it sacrifices some specificity for brevity.

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?

With no annotations, no output schema, and four parameters, the description is too thin to fully support correct invocation. It does not explain how language and directory are used, what the store and api_key parameters do in the generation process, or what the resulting artifact will be. This leaves important context missing for an agent deciding whether and how to call the tool.

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 schema already describes three of the four parameters (store, language, directory) with a coverage of 75%, so the baseline is 3. The description adds no additional parameter semantics, and the api_key property remains undocumented in both the schema and the description, which is a minor gap but not enough to lower the score below baseline.

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 states a specific action ('Generate') and a concrete resource ('session-based authentication with cookie management'), which clearly differentiates it from sibling tools like auth_generate_jwt and auth_generate_oauth. It is not a tautology, though 'session-based' could be more explicit about whether it generates code/configuration or creates a live session.

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?

There is no guidance on when to use this tool over alternatives. It does not mention that this is appropriate for cookie/session workflows versus JWT or OAuth, nor does it reference any of the closely related sibling tools such as session_generate_store or auth_generate_jwt. The agent must infer usage from the name and description alone.

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