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Prowlarr MCP server

by rollecode

update_indexerproxy_by_id

Idempotent

Update an indexer proxy's configuration in Prowlarr by providing its ID and request body.

Instructions

Update IndexerProxy.

PUT /api/v1/indexerproxy/{id}

Args: id: Path parameter. 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
idYes
bodyYes
force_saveNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

A4.2/5.0
Behavior3/5

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

With annotations already providing readOnlyHint=false, idempotentHint=true, and destructiveHint=false, the description's 'Update IndexerProxy' is not in conflict and the route line adds a small amount of extra context via the schema lookup advice. It does not detail side effects or force_save behavior, so it stops at adequate rather than strong.

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 compact and well-ordered: one-line purpose, explicit route, then a tight argument list with no filler. Every line earns its place.

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

Completeness4/5

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

For a 3-parameter mutation with an output schema and annotations, the description covers all arguments at a role level and directs the agent to the schema/GET endpoint for the complex body. It is slightly incomplete on force_save semantics and on what a successful update returns, but the output schema reduces that burden.

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?

Schema property descriptions are 0%, so the description partially compensates by labeling id as a path parameter, body as the request payload, and force_save as a query parameter, while advising how to discover body fields. The only notable gap is no elaboration of force_save's meaning.

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 explicitly states the operation and resource: 'Update IndexerProxy' backed by the PUT /api/v1/indexerproxy/{id} route, which ties it to a specific by-id mutation. This is specific enough to distinguish it from the related create/delete/list siblings for IndexerProxy and for other resource types.

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

Usage Guidelines4/5

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

It gives concrete guidance to read the matching GET or /schema endpoint first so the agent can discover the expected body fields before calling. It does not enumerate exclusions or when-not-to-use alternatives, but the context is clear and actionable.

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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