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Sonarr MCP server

by rollecode

list_release

Read-onlyIdempotent

Fetch available releases for a series, episode, or season by specifying IDs to identify download options for Sonarr-managed media.

Instructions

Read Release.

GET /api/v3/release

Args: series_id: Query parameter. episode_id: Query parameter. season_number: Query parameter.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
series_idNo
episode_idNo
season_numberNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

B3/5.0
Behavior3/5

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

Annotations already declare the tool read-only, idempotent, and non-destructive, so the safety profile is covered. The description adds the GET method and query parameters but provides no additional behavioral context such as result scoping, default behavior, or authorization needs.

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 compact and well-structured: one clear summary line, the endpoint, then a short parameter list. No filler or repetition beyond what is minimally necessary, though it is sparse.

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 simple read-only list tool with an output schema and safety annotations, much is covered. However, the description omits the intended filtering semantics and any context on what a 'release' is, leaving the agent with only parameter names to infer usage.

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?

Schema description coverage is 0%, so the description would need to compensate, but it only repeats parameter names and labels them 'Query parameter.' It does not explain whether these filter results, how they combine, or what omitting them returns; parameter meaning is left mostly to inference from names.

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 says 'Read Release' and provides the GET /api/v3/release endpoint, making the operation and resource clear. It does not explicitly differentiate it from release-related siblings such as list_releaseprofile or create_release.

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 about when to use this tool versus alternatives, no exclusions, and no prerequisites. The description lists only the endpoint and arguments, so an agent cannot determine when this is the right tool among the many list_* siblings.

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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