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by AIOProductOS
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TypeScript
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studio_hold

Holds screen recording with micro-drift after captions or zooms. Optionally glides cursor to a target element before holding, preventing dead-static frames from being dropped.

Instructions

Hold the shot for a moment — glides to a target (optional) and keeps micro-drift so the recorder keeps emitting frames (a dead-static hold gets its tail frames dropped). Use after captions, highlights, and zooms: 2000–3000ms is a good beat.

Tool call template

This tool declares no required parameters. Add optional parameters from the input schema as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {},
    "name": "studio_hold"
  }
}

Input Schema

NameRequiredDescriptionDefault
msNoHold duration in milliseconds. Optional; default 2200. A good beat after a caption/highlight/zoom is 2000–3000.
targetNoCSS selector or visible text to glide the cursor to and rest on. Optional — omit to hold in place. Example: '.cta-button'.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed4 schema fields changedv0.1.3
    • changedInput schema / properties / ms / description
      Previous value: -"Hold duration in ms (optional; default 2200)."New value: +"Hold duration in milliseconds. Optional; default 2200. A good beat after a caption/highlight/zoom is 2000–3000."
    • addedInput schema / properties / ms / exclusiveMinimum
      Added value: +0
    • changedInput schema / properties / ms / type
      Previous value: -"number"New value: +"integer"
    • changedInput schema / properties / target / description
      Previous value: -"CSS selector or visible text to rest the cursor on (optional)."New value: +"CSS selector or visible text to glide the cursor to and rest on. Optional — omit to hold in place. Example: '.cta-button'."
  2. First observedv0.1.0

TDQS

A4.4/5.0
Behavior4/5

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

With no annotations, the description carries full burden. It discloses the key behavior: gliding to an optional target and keeping micro-drift to avoid dead-static hold frame drops. Does not cover all edge cases but provides critical insight.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

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

Two sentences, no wasted words. Front-loads the action and purpose, then adds usage guidance. Each sentence earns its place.

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

Completeness4/5

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

No output schema exists, but for a simple hold tool the description covers purpose, usage context, parameter details, and a behavioral nuance (micro-drift). Missing some edge cases but adequate for the tool's simplicity.

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

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, but the description adds context: explains that 'target' is optional and gives an example, and clarifies that 'ms' has a default of 2200 with a suggested range. Adds value beyond schema.

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

Purpose5/5

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

The description clearly states the tool's action ('Hold the shot') and resource, distinguishing it from siblings like studio_click or studio_scroll by focusing on pausing with micro-drift to keep tail frames.

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

Usage Guidelines4/5

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

Explicitly recommends usage after captions, highlights, and zooms, and suggests a typical duration (2000–3000ms). Does not explicitly mention when not to use or alternatives, but context from sibling tools implies them.

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

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