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Prowlarr MCP server

by rollecode

create_downloadclient_action_by_name

Idempotent

Create a download client in Prowlarr by sending a POST request with the client's action name and configuration payload. Use this to add new download client settings.

Instructions

Create DownloadClient.

POST /api/v1/downloadclient/action/{name}

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

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
bodyYes
nameYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

C2.4/5.0
Behavior2/5

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

Annotations already disclose idempotentHint=true, readOnlyHint=false, and destructiveHint=false, so the safety profile is covered. The description adds only the POST endpoint and a hint to look up the schema; it does not disclose side effects, whether this triggers an action rather than a plain create, or any behavioral context beyond the raw endpoint.

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 and front-loaded. It gives the endpoint, then the two arguments, then a useful lookup hint. There is no filler, though the minimalism contributes to the lack of semantic detail.

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?

For a POST/create tool with 0% schema coverage and many sibling create variants, the description is incomplete. It never explains what 'action' means, whether this creates a download client or triggers an action, or why an agent should choose this over create_downloadclient. The output schema does not compensate for these selection and behavior gaps.

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 needs to compensate, but it only restates name as a path parameter and body as a payload. It does not say what 'name' refers to or what fields the body should contain, although pointing to the GET/schema endpoint is a small helpful gesture.

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

Purpose3/5

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 gives the HTTP endpoint. However, the endpoint path includes '/action/{name}', which is not explained, and the tool name is not differentiated from the closely related sibling create_downloadclient. An agent cannot tell what 'action' means or how this creation differs from the plain create.

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?

No guidance is provided about when to use this tool versus create_downloadclient, create_downloadclient_test, or other create_* siblings. The advice to read the matching GET or /schema endpoint first is useful for constructing the body, but it does not help with tool selection or prerequisites.

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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