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Prowlarr MCP server

by rollecode

update_downloadclient_bulk

Idempotent

Update multiple download clients in Prowlarr simultaneously with a bulk request, modifying their settings as specified.

Instructions

Update DownloadClient.

PUT /api/v1/downloadclient/bulk

Args: 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

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

C2.7/5.0
Behavior3/5

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

Annotations declare idempotentHint=true and destructiveHint=false, so the agent knows it's a non-destructive, idempotent operation. The description doesn't contradict annotations, but it adds little beyond them. It mentions the PUT HTTP method and the /schema endpoint, which is useful context, but doesn't describe how the bulk operation works (e.g., whether it's transactional, partial failures).

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 to the point, starting with the specification of what the tool does. The one-line instruction about the body is a single sentence that adds context without bloat, but the overall structure could be improved by adding a purpose clause.

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 bulk update tool with a loosely-typed body parameter, the description is insufficient. It doesn't specify what fields are expected, how the bulk operation behaves, or how it differs from the single update. The output schema exists but doesn't help the agent form the request. The tool's complexity and the opaque body schema require more detailed guidance.

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%, and the only parameter 'body' is an opaque object with additionalProperties true, giving no clue about required fields. The description says to read the GET or /schema endpoint, which is a poor substitute for describing the parameter itself. An agent cannot know what to put in the body without extra calls, making this a significant functional gap.

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 the resource (DownloadClient) and the action (Update), and is clearer than the ambiguous name. However, it doesn't specify the scope ('bulk' meaning multiple items) or contrast with update_downloadclient_by_id. The sibling list shows both update_downloadclient_by_id and update_downloadclient_bulk, and the description doesn't clarify that this one handles multiple clients in one call.

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 on when to use this bulk update versus the single update. It gives a hint to read the GET or /schema endpoint first, but doesn't explain the difference between the many update_*_bulk and update_*_by_id tools. An agent would struggle to pick between update_downloadclient_bulk and update_downloadclient_by_id without deeper context.

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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