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mattmaas

Radarr MCP Server

by mattmaas

radarr_refresh_movie

Updates movie metadata like ratings and release dates using the Radarr movie ID to keep library details current.

Instructions

Refresh movie information from metadata sources. Updates ratings, release dates, etc.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
movieIdYesRadarr movie ID to refresh

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?

With no annotations, the description carries the full burden. It hints at mutation and the source of new data, but does not say whether the call is synchronous or queued, whether it overwrites manual edits, or whether it can fail when the metadata provider is unreachable.

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?

Two short sentences, front-loaded with the action. The trailing 'etc.' is slightly vague but the entry is well within budget.

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

Completeness3/5

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

For a one-parameter tool with full schema coverage and no output schema, this is minimum viable. The main missing piece is whether the refresh is immediate or asynchronous and what state the movie ends up in.

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 description coverage is 100% for the single movieId parameter, so the schema already carries the semantics. The description adds no format, range, or lookup guidance beyond it, so the baseline 3 applies.

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?

States a specific verb+resource ('Refresh movie information') and the data source ('metadata sources'), which is clear on its own. It does not, however, distinguish itself from the similar sibling radarr_rescan_movie or explain what 'refresh' means relative to 'rescan'/'edit'.

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 when-to-use guidance, no prerequisites, and no mention of the competing radarr_rescan_movie sibling. The agent must infer the situation from the name alone.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.