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Radarr MCP server

by rollecode

create_metadata_test

Idempotent

Trigger a metadata test through Radarr's API to verify that a metadata configuration is valid and can be created, exposing any errors in the setup.

Instructions

Create Metadata.

POST /api/v3/metadata/test

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

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
bodyYes
force_testNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

C2.9/5.0
Behavior2/5

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

Annotations already declare readOnlyHint=false, idempotentHint=true, and destructiveHint=false. The description adds no behavioral context beyond those annotations: it does not disclose that this is a test operation, what side effects it has, or how it differs from a regular create. No contradiction was found.

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 brief and front-loaded, with the purpose first, then the endpoint, then the parameters. It contains little waste, although the force_test line mostly repeats what the schema already shows.

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 tool sitting among many create_* siblings, the description omits the test-specific purpose, the semantics of force_test, and when this endpoint should be chosen. The body can be discovered through the schema and an output schema exists, but the core decision context is missing.

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

Parameters3/5

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

Schema coverage is 0%, so the description must compensate. It gives a useful pointer for body — read the matching GET or /schema endpoint first — which matters because the schema defines body as an opaque object. However, force_test is merely labeled 'Query parameter,' adding no meaning about how the boolean affects behavior.

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 clearly names an action ('Create Metadata') and specifies the endpoint (POST /api/v3/metadata/test), so an agent can identify the basic operation. However, it does not explain that this is the test variant and does not distinguish it from the sibling create_metadata, so differentiation is absent.

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?

There is no when-to-use guidance or comparison with alternatives. The only hints are the '/test' suffix and the instruction to read a GET or /schema endpoint before supplying the body, but the description never states when to choose this over create_metadata or create_metadata_testall.

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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