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servarr-mcp

by CarlDog

Sonarr: List Root Folders

sonarr_list_root_folders
Read-only

List root folders configured in Sonarr to identify storage locations for series. Use the path as rootFolderPath when adding a new series.

Instructions

List Sonarr root folders (where series are stored on disk). The path is required as rootFolderPath when adding a series.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior3/5

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

Annotations already declare readOnlyHint=true, so the description correctly confirms a read-only operation. It adds behavioral context by explaining what root folders represent and linking to the add_series workflow, but it does not describe the return format or potential errors.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is two sentences, front-loaded with the core action, and contains no redundant information. Every word earns its place.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Despite having no output schema, the description does not explain what the output contains (e.g., list of paths, names, or full objects), leaving a gap in completeness. However, the tool is simple and the annotations cover the read-only aspect.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema has no parameters (0 params), so baseline is 4. The description adds no parameter details but correctly implies no inputs are needed.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's verb ('List') and resource ('Sonarr root folders'), with an explanation of their purpose ('where series are stored on disk'). It distinguishes from siblings like sonarr_list_series by specifying the resource type.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description hints at usage by noting that the returned path is needed for adding a series, but does not explicitly specify when to use this tool vs alternatives, nor does it provide context for exclusion or comparison with sibling list tools.

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

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