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Radarr MCP server

by rollecode

delete_customformat_by_id

DestructiveIdempotent

Delete a custom format by its ID from Radarr. Removes the format definition to stop it from being used in quality profiles.

Instructions

Delete CustomFormat.

DELETE /api/v3/customformat/{id}

Args: id: Path parameter.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
idYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

C2.8/5.0
Behavior2/5

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

The annotations already declare destructiveHint=true and idempotentHint=true, so the destructive nature is covered. The description adds no behavioral context beyond 'Delete' and the HTTP route, such as irreversibility, authorization needs, or cascading effects. No contradiction with annotations.

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 very short and front-loads the core operation. The endpoint and args lines are compact and free of fluff, though the sparse content limits usefulness.

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?

Given the simple single-parameter delete operation, an output schema, and annotations covering destructiveness and idempotency, the core invocation is decipherable. However, the lack of usage differentiation and parameter meaning leaves gaps in the overall context needed for confident tool selection.

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?

With 0% schema description coverage, the description must compensate, but it only states 'id: Path parameter.' This confirms the id is path-located but does not explain that it identifies the CustomFormat to delete or provide any semantic meaning beyond the schema's integer type.

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 states the action ('Delete') and the resource ('CustomFormat'), and the included endpoint '/api/v3/customformat/{id}' indicates this deletes a single item by ID. It does not explicitly contrast with delete_customformat_bulk, so it is clear but not fully differentiated.

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 guidance on when to use this tool versus alternatives like delete_customformat_bulk or update_customformat_by_id. No conditions, prerequisites, or exclusions are provided, so an agent must infer usage 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.

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