vmix_transition_configure

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

Annotations already mark this as a non-read-only, destructive operation; the description's 'Native writes via documented API' confirms that and adds that writes go through vMix's documented API rather than an unofficial mechanism. It does not disclose that reconfiguring a button overwrites its prior effect/duration, but it does not contradict the annotations.

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?

Three short sentences with no filler: core function, optional capability, and write mechanism each earn their place, with the primary purpose front-loaded. Every sentence adds distinct information.

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 7-parameter destructive write with no output schema and zero schema descriptions, the description covers the primary action and the optional binding but omits dry_run semantics, whether gt_input and stinger_slot must be provided together, and any error or return behavior. Adequate for basic invocation but with clear gaps.

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%, so the description must compensate. It maps the core domain parameters — button ('four native buttons'), effect, duration_ms ('duration'), gt_input ('GT title input'), and stinger_slot ('Stinger slot') — but leaves request_id and especially dry_run, a behavior-changing boolean, unexplained.

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?

States a specific verb and resource ('Configure one of the four native vMix transition buttons') and enumerates exactly what is configured: effect, duration, and optionally binding a GT title input to a Stinger slot. This clearly differentiates it from siblings like vmix_transition and vmix_transition_preset_save, which concern performing or saving transitions rather than configuring the native buttons.

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 use case is implied — configure a native transition button or bind a GT title to a Stinger slot — but no explicit when-to-use or when-not-to-use guidance is given, and no alternatives are named. An agent must infer how this differs from siblings such as vmix_transition_preset_save or vmix_trigger_save.

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