create_movies_subtitles

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

Beyond the annotations, which already say the operation is non-read-only and idempotent, the description only restates the HTTP POST method and parameter list. It does not disclose upload constraints, overwrite/replace behavior, authentication needs, or validation consequences.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is compact and well organized: one sentence, the endpoint, and a labeled Args block. Nothing is extraneous, and the information appears in a scannable order, with only minor grammar awkwardness ('a movie subtitles').

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

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

The five required parameters are all listed with brief explanatory labels, and the presence of an output schema reduces the need to describe return values. However, the description still lacks details about file formats, semantics of forced/hi, the effect of re-uploading, and alternative routing information.

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

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

With 0% schema description coverage, the parameter list carries the semantics: radarrid as Movie ID, language as two-letter code, forced and hi as boolean-like strings, and file as an upload object. It clarifies types and presumed formats, though 'hi' is not expanded to hearing-impaired and acceptable file formats are omitted.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description opens with the action 'Upload' and the resource 'movie subtitles', and the POST endpoint /api/movies/subtitles reinforces the scope. Because sibling create_episodes_subtitles exists, the movie-resource wording distinguishes this tool from that one.

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

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

The description provides no when-to-use guidance and does not mention alternatives such as patch_movies_subtitles or create_episodes_subtitles. An agent must infer from the tool name and the word 'movie' when this is the right choice.

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