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Glama

vmix_transition

Destructive

Apply a saved transition preset to a specified program input and confirm the resulting state, enabling automated scene changes in live production.

Instructions

Take a specified input on the main program using a saved MCP transition preset; returns state confirmation.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
inputYes
presetYes
dry_runNo
request_idYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.1.0

TDQS

C2.7/5.0
Behavior2/5

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

The description aligns with the destructiveHint annotation by indicating a state-changing transition, rather than a read-only operation. However, it does not disclose the specific effects of the transition, reversibility, failure behavior, or why the destructive hint is present, so it adds limited behavioral context beyond 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.

Conciseness4/5

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

The description is a single sentence with no filler or redundant restatement of the tool name. The key operation is front-loaded and the return behavior is included compactly.

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

Completeness2/5

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

For a destructive action with four parameters and no output schema, the description is too sparse. It omits dry_run semantics, request_id purpose, any safety caveats, and any guidance on how this tool relates to vmix_transition_configure or vmix_transition_preset_save, leaving an agent without enough context to call it confidently.

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

Parameters2/5

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 for parameter meaning. It loosely maps 'specified input' to the input parameter and 'saved MCP transition preset' to preset, but it does not explain dry_run or request_id, both of which are important for safe and correct invocation.

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

Purpose4/5

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

The description states a specific action: taking a specified input on the main program using a saved transition preset, and notes it returns state confirmation. It clearly identifies the operation and resource, though it does not explicitly differentiate itself from sibling tools like vmix_transition_configure or vmix_transition_preset_save.

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

Usage Guidelines2/5

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

The description implies the tool should be used when a saved MCP transition preset is available, but it gives no explicit when-to-use guidance, no exclusions, and no mention of alternatives. There is also no guidance about dry_run or conditions under which the transition should not be performed.

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