add_subtitles

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

With no annotations, the description carries the full burden, but it only states the basic action. It does not disclose any side effects (e.g., overwriting existing subtitles), or the significance of optional parameters like color and font_size. The schema covers parameter details, but behavioral context is missing.

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 a single, concise sentence that precisely conveys the tool's function without unnecessary words. It is appropriately sized for quick comprehension.

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 description is minimal but sufficient to understand the tool's basic purpose. However, given the presence of many sibling tools and the lack of clarity on how this differs from 'add_text', it feels incomplete. The existence of an output schema slightly reduces the need to describe returns.

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 100%, so the schema adequately documents all parameters. The description adds no additional meaning beyond what is in the schema, meeting the baseline expectation but providing no extra value.

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 clearly states the verb 'Add', the resource 'subtitle entries', and the qualifier 'in bulk', which distinctively indicates this tool adds multiple subtitles at once. This contrasts with siblings like 'add_text' which likely handles single text entries.

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 guidance on when to use this tool versus alternatives such as 'add_text' or 'add_media_batch'. It does not specify prerequisites or context that would help an agent decide when this tool is appropriate.

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