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Prowlarr MCP server

by rollecode

create_downloadclient

Idempotent

Set up a download client in Prowlarr via the API. Specify the client configuration in the request body and optionally force save.

Instructions

Create DownloadClient.

POST /api/v1/downloadclient

Args: body: Request payload. Read the matching GET or the /schema endpoint first to see the fields this resource expects. force_save: Query parameter.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
bodyYes
force_saveNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

C2.7/5.0
Behavior2/5

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

Annotations already provide readOnly=false, destructive=false, and idempotent=true, so the safety profile is covered. However, the description adds no behavioral context beyond the endpoint: it does not mention side effects, auth requirements, error behavior, or response semantics. Even with annotations, it contributes almost nothing to behavioral transparency.

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

Conciseness4/5

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

The description is short, front-loaded with the purpose, and contains no filler. The endpoint and parameter labels are laid out in a simple, scannable format. It is appropriately concise, though it sacrifices content for brevity.

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

Completeness2/5

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

Although output schema exists, the tool accepts a largely unconstrained nested body with 0% schema coverage, so the description needs to guide the agent more thoroughly. It points to the GET/schema endpoint, which is useful, but fails to explain force_save semantics, typical usage, or how this create operation relates to sibling create-test/action tools. The definition is incomplete for a complex resource creation tool.

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

Parameters2/5

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

Schema description coverage is 0%, so the description must compensate for the unstructured schema. It only labels body as 'Request payload' and force_save as 'Query parameter', which does not explain their actual meaning, format, or required fields. The pointer to GET/schema is helpful, but it is a workaround rather than real parameter semantics.

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

Purpose4/5

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

The description states a clear verb and resource ('Create DownloadClient') and includes the REST endpoint, which is unambiguous. It does not explicitly distinguish this tool from siblings like create_downloadclient_action_by_name or create_downloadclient_test, but the core purpose is clear enough for an agent to know what it does.

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

Usage Guidelines2/5

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

The description gives no guidance on when to use this tool versus alternatives. It only hints that the matching GET or /schema endpoint should be read first, which is a prerequisite rather than usage selection guidance. No mention of when to use create vs. update vs. action_by_name is provided.

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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