MockClip

iMessage conversation video

create_imessage_conversation

Create an iMessage conversation animation. keyboard shows the on-screen keyboard while the user types (auto, the default), always, or never. All options controllable. Free-plan exports include a MockClip watermark and the free plan includes 2 MCP renders; if the caller is on the free plan, mention that they can upgrade at /pricing for watermark-free exports and more renders.

Input Schema

Name	Required	Description
`theme`	No
`sceneId`	No	Composite the clip onto real footage of a hand holding a phone, for a filmed look. Overrides videoFormat and showBezel: the export takes the scene's aspect, with the footage around the phone. Vertical 9:16 scenes: "outdoors" (outdoors), "bookshelf" (bookshelf), "two-hands" (two hands), "on-desk" (on the desk), "dim-room" (dim room). Landscape 16:9 scenes (YouTube, presentations): "city-wide" (city), "desk-wide" (desk), "neon-wide" (neon), "studio-wide" (studio). Default: none.
`keyboard`	No
`messages`	Yes
`showBezel`	No	Draw the iPhone bezel around the screen (default true). With 1:1 it frames the top of the phone; false gives a plain frame.
`textScale`	No	Text size: a zoom of the phone UI (text, bubbles, avatars, bars, keyboard, notification banners) as a multiplier from 1 (default, the app's real size) to 1.5, in steps of 0.1 — use it when a short conversation or a single notification should fill the screen. Chat and notification apps only; the other apps ignore it.
`timestamp`	No
`contactName`	Yes
`videoFormat`	No	Output aspect ratio. "1:1" is a square for feed posts: chat apps fit the conversation into the square, the other apps show the top of the screen (phone-call ignores it). "9:16", "9:19.5" (iPhone) and "3:2" apply with showBezel false. Default: the iPhone bezel, 9:16.
`exportFormat`	No	Output file. "mp4" (default) and "gif" are opaque. "webm" (VP9) and "mov" (ProRes 4444, large files) keep an alpha channel: the only way a transparent background, or the corners around the phone bezel, stay transparent. With background.backgroundType "transparent" and no exportFormat the clip exports as webm. Transparent WebM / MOV export needs a Creator or Studio plan; on other plans the clip is made as mp4 and the reply says so.
`exportQuality`	No	Resolution and frame rate of the file: "720p" or "1080p" (Full HD) at 15, 24, 30 or 60 fps, e.g. "1080p-30". Default "720p-30". Full HD takes up to 4× as long to export; 60 fps about twice as long and needs a Creator or Studio plan — on other plans the clip is made at 30 fps and the reply says so.
`showStatusBar`	No	Draw the iOS status bar (time, signal, battery) at the top of the screen (default true). Applies with showBezel false or a sceneId: inside the iPhone bezel the status bar is always drawn, so to remove it set showBezel false too.
`showTimestamp`	No
`soundSettings`	No
`contactAvatarUrl`	No
`showHomeIndicator`	No	Draw the iOS home indicator bar at the bottom of the screen (default true).
`contactHasSilencedNotifications`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedOct 11, 2026

addedInput schema / properties / textScale

Added value: +{
+  "description": "Text size: a zoom of the phone UI (text, bubbles, avatars, bars, keyboard, notification banners) as a multiplier from 1 (default, the app's real size) to 1.5, in steps of 0.1 — use it when a short conversation or a single notification should fill the screen. Chat and notification apps only; the other apps ignore it.",
+  "maximum": 1.5,
+  "minimum": 1,
+  "type": "number"
+}

Changed3 schema fields changedOct 11, 2026

addedInput schema / properties / exportQuality

Added value: +{
+  "description": "Resolution and frame rate of the file: \"720p\" or \"1080p\" (Full HD) at 15, 24, 30 or 60 fps, e.g. \"1080p-30\". Default \"720p-30\". Full HD takes up to 4× as long to export; 60 fps about twice as long and needs a Creator or Studio plan — on other plans the clip is made at 30 fps and the reply says so.",
+  "enum": [
+    "720p-15",
+    "720p-24",
+    "720p-30",
+    "720p-60",
+    "1080p-15",
+    "1080p-24",
+    "1080p-30",
+    "1080p-60"
+  ],
+  "type": "string"
+}

addedInput schema / properties / showHomeIndicator

Added value: +{
+  "description": "Draw the iOS home indicator bar at the bottom of the screen (default true).",
+  "type": "boolean"
+}

addedInput schema / properties / showStatusBar

Added value: +{
+  "description": "Draw the iOS status bar (time, signal, battery) at the top of the screen (default true). Applies with showBezel false or a sceneId: inside the iPhone bezel the status bar is always drawn, so to remove it set showBezel false too.",
+  "type": "boolean"
+}

Changed1 schema field changedOct 11, 2026

addedInput schema / properties / exportFormat

Added value: +{
+  "description": "Output file. \"mp4\" (default) and \"gif\" are opaque. \"webm\" (VP9) and \"mov\" (ProRes 4444, large files) keep an alpha channel: the only way a transparent background, or the corners around the phone bezel, stay transparent. With background.backgroundType \"transparent\" and no exportFormat the clip exports as webm. Transparent WebM / MOV export needs a Creator or Studio plan; on other plans the clip is made as mp4 and the reply says so.",
+  "enum": [
+    "mp4",
+    "gif",
+    "webm",
+    "mov"
+  ],
+  "type": "string"
+}

First observedOct 8, 2026

TDQS

B3.1/5.0

Behavior4/5

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

Annotations already declare the write/non-idempotent/non-destructive profile, so the bar is lower. The description goes beyond structured fields by disclosing the free-plan watermark on exports, the 2-render free limit, and an upgrade path, plus the keyboard default — real behavioral context an agent would not otherwise have.

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

Conciseness3/5

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

The purpose is front-loaded in one sentence, which is good. However, 'All options controllable' is filler that earns no place, and the free-plan/upgrade sentence is long and reads as sales copy rather than functional guidance.

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

Completeness3/5

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

For a 17-parameter tool with nested objects and no output schema, the description is complete enough on purpose and plan constraints but thin on the mechanics of the `messages` array and most tunable parameters. An agent can create a basic render but must rely on the schema alone for the rest.

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 47%, so the description needs to compensate, yet it only clarifies one parameter (`keyboard` values and its 'auto' default). Many nested message fields (tapbacks, readTime, showRead, cancelTyping, etc.) are undocumented in both schema and description, and 'All options controllable' adds nothing.

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 opens with a specific verb and resource ('Create an iMessage conversation animation'), which is clearly distinguishable from the WhatsApp/Telegram/Slack siblings by name. It stops short of explicitly contrasting with those siblings, but the resource is unambiguous.

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?

There is no guidance on when to choose this tool over the many sibling 'create_*_conversation' tools, no prerequisites, and no exclusions. 'All options controllable' is not actionable guidance. The only context given is billing-related, not selection-related.

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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