list_rename

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

Annotations clearly indicate readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the description does not need to repeat that it is safe. However, the description adds no behavioral context (e.g., return format, pagination, or potential error conditions). It is not contradictory to annotations, but it adds minimal value beyond them.

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 extremely short, which is concise, but it is not well-structured for an agent: 'Read RenameMovie.' is unhelpful, and the HTTP endpoint is not actionable by an MCP agent. It is more like an auto-generated stub than a deliberate, front-loaded definition. It earns a 3 for brevity but lacks meaningful content.

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?

This is a listing endpoint with a lone optional movie_id parameter and an output schema. The description leaves the agent guessing about the purpose, return type, and relationship to sibling tools. Given the low schema coverage, the description needed to compensate, but it provides almost nothing. Complete inadequacy for unassisted invocation.

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?

Schema description coverage is 0%, and the parameter 'movie_id' is only described as 'Query parameter' in the description sentence. The schema provides no description for it. The tool does not explain what movie_id is for, its format, or whether it is optional. The description adds almost no meaning beyond the schema's type and title.

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 'Read RenameMovie' is a tautology that merely restates the tool's name 'list_rename' with a vague 'Read'. It does not explain what a RenameMovie is, what listing entails, or what the tool does beyond the obvious HTTP GET. It fails to distinguish this from many sibling list_* tools.

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?

There is no guidance on when to use this tool versus alternatives. No context, no exclusions, no mention of related tools such as list_movie or get_movie_by_id. The description only provides an HTTP endpoint and an argument, which is insufficient for an agent to know when to invoke this tool.

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