authenticate_plex

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It states the tool initiates an OAuth flow and returns a login URL, but does not mention whether this requires user interaction, what happens to existing sessions, rate limits, or error conditions. For an authentication tool with zero annotation coverage, this leaves significant gaps in understanding its 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?

The description is a single, front-loaded sentence with zero waste—every word contributes directly to explaining the tool's purpose. It efficiently conveys the action and outcome without unnecessary details, making it easy to parse quickly.

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 complexity of an authentication tool with no annotations and no output schema, the description is minimally adequate. It explains what the tool does but lacks details on behavioral traits, return values, or error handling. It meets basic requirements but leaves room for improvement in contextual depth.

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 input schema has 0 parameters with 100% coverage, so the schema fully documents the lack of inputs. The description adds no parameter information, which is appropriate here, but does not compensate for any gaps since there are none. A baseline of 4 is given for tools with zero parameters, as no additional semantic explanation is needed.

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 specific action ('Initiate Plex OAuth authentication flow') and the outcome ('to get user login URL'), distinguishing it from sibling tools like 'check_auth_status' or 'clear_auth'. It uses precise technical terminology that identifies the exact resource and operation.

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?

The description implies this tool should be used at the start of an authentication process, but it does not explicitly state when NOT to use it (e.g., after authentication is already established) or name alternatives like 'check_auth_status'. The context is clear but lacks explicit exclusions or comparisons.

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