pr_applyTransition

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

The annotations already establish that this is a non-read-only, non-destructive, non-open-world mutation. The description adds transition types and placement semantics, but it does not disclose whether existing transitions are replaced, permission requirements, or failure behavior.

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 front-loaded sentence with no filler. The examples and placement options are compact and immediately useful.

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?

For a 5-parameter mutation tool with annotations and no output schema, the description covers the key calling semantics. Minor gaps remain around transition replacement behavior and exact clip targeting, but the schema carries clip details and sequence name.

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 coverage is only 40%, so the description must add meaning. It explains that duration is in seconds, position can be start/end/both, and transition accepts named video/audio transitions with examples, though it does not clarify the sequence parameter or clip selection behavior beyond the schema.

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 states a specific verb and resource ("add a transition") and gives concrete video/audio transition examples, making the core action clear. It does not explicitly distinguish the tool from nearby siblings such as pr_applyEffect, so it falls short of a 5.

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?

It indicates placement options at the start, end, or both of clips, which implies usage context. However, it gives no explicit when-to-use guidance, prerequisites, or alternatives such as pr_applyEffect.

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