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rollecode

Bazarr MCP server

by rollecode

create_webhooks_radarr

Idempotent

Accepts Radarr webhook events to detect movies with missing subtitles, then triggers Bazarr to search and download the required subtitle files automatically.

Instructions

Search for missing subtitles based on Radarr webhooks.

POST /api/webhooks/radarr

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

A3.5/5.0
Behavior3/5

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

Annotations already signal a non-read-only, idempotent, non-destructive operation. The description adds that the effect is searching for missing subtitles based on Radarr webhooks, but it does not clarify whether this creates a persistent webhook subscription or simply processes an incoming webhook event—an important distinction given the tool name.

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 minimal and front-loaded: one behavioral sentence followed by the endpoint. It wastes no words, though a clarifying phrase about the create/process webhook relationship would make it easier to parse.

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 parameterless tool with an output schema, the description is mostly sufficient. The main gap is the unresolved relationship between the tool name ('create_webhooks') and the described behavior ('Search for missing subtitles'), plus no mention of prerequisites or side effects beyond the search.

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?

The tool has zero parameters and schema coverage is complete, so the description does not need to document arguments. The 'Radarr webhooks' phrasing reinforces context but is not necessary for parameter understanding.

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 states a concrete outcome—searching for missing subtitles—and scopes it to Radarr webhooks, which distinguishes it from the Sonarr and Plex webhook siblings. It is not fully explicit about whether this creates/registers a webhook, so the exact nature of the operation is slightly inferred, but the intended behavior is clear enough.

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

Usage Guidelines3/5

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

The mention of 'Radarr webhooks' provides clear context for when this tool is relevant, but there is no explicit guidance about when to prefer it over create_webhooks_sonarr or create_webhooks_plex. Usage is implied rather than stated with conditions or exclusions.

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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