create_settings_plex_sync

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

Annotations already declare the operation is non-read-only, idempotent, and non-destructive. The description adds the key behavioral fact that it triggers a full library scan and warns the agent to consult GET/schema first. It does not address edge cases like an already-running scan, but annotations lower the burden.

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?

Four short lines with no filler: the action is front-loaded, the endpoint is included, and the parameter guidance is the minimum needed. Every sentence earns its place.

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 single-body-parameter trigger endpoint with an output schema, the description is nearly complete. It names the action, gives the endpoint, and explains how to discover the payload shape. It could add one sentence about side effects or prerequisites such as Plex being configured, but nothing critical is missing for invocation.

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 sole parameter is a generic open object with 0% schema coverage. The description compensates by identifying body as the request payload and, more importantly, directing the agent to the matching GET or /schema endpoint for the expected fields. It does not enumerate fields, but the redirect is the actionable semantic information.

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 opens with a specific verb and resource: 'Start full Plex library scan.' This clearly distinguishes the tool as a trigger action, unlike siblings such as list_settings_plex_sync (which lists sync state) or create_settings_plex (which configures Plex).

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 intended use is implied by 'Start full Plex library scan,' and the instruction to read the matching GET or /schema endpoint provides a useful prerequisite. However, it does not explicitly state when to prefer this over sibling settings endpoints or mention when not to use it.

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