Morpha

Cut range

cut_range

Destructive

Ripple-delete a time window [startFrame, endFrame) — remove that span and pull all later content earlier by delta = endFrame - startFrame (the NLE 'ripple delete' / 'close gap'). Shifts every keyframe, colour keyframe, marker, audio overlay, loop region, and start_at through the cut (a speed ramp is anchored to its clip and rides along unchanged), and is SOURCE-AWARE for video layers: a clip that straddles the cut is trimmed, and one whose interior is removed is SPLIT into two layers. Audio overlays interior to the cut are truncated at the seam (overlays have no source-in to bridge the gap). REFUSES to cut across a video layer that carries speed-ramp keyframes — remove them, or cut outside that layer's span, first. The composition length shrinks accordingly (an authored length loses only the overlap with its visible region). Frames are 0-indexed project-timeline frames at 30 fps; endFrame is exclusive and clamped to the composition length.

Input Schema

TableJSON Schema

Name	Required	Description
`endFrame`	Yes	End frame of the window to remove (0-indexed, EXCLUSIVE). Must be > startFrame; clamped to the composition length.
`projectId`	Yes	Opaque project id (a v4 UUID, from list_projects/create_project). Selects which existing project this call mutates.
`startFrame`	Yes	First frame of the window to remove (0-indexed, inclusive).

Output Schema

TableJSON Schema

Name	Required	Description
`ok`	Yes	Whether the call succeeded.
`data`	No	The payload, shaped by the tool.
`note`	No	What to do next when not ready.
`error`	No	Why it failed.
`status`	No	For cache-backed readers: whether the answer was ready.
`editorUrl`	No	Opens this project in the editor.

Schema Changelog

Changes observed during successful MCP inspections.

Changed2 schema fields changedSep 17, 2026

removedInput schema / properties / anonymousToken

Removed value: -{
-  "description": "The token create_anonymous_account returned. This connection has no Morpha key, so every call carries it.",
-  "type": "string"
-}

changedInput schema / required

Previous value: -[
-  "startFrame",
-  "endFrame",
-  "projectId",
-  "anonymousToken"
-]New value: +[
+  "startFrame",
+  "endFrame",
+  "projectId"
+]

Changed1 schema field changedSep 15, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "description": "The result envelope every Morpha tool returns.",
+  "properties": {
+    "data": {
+      "description": "The payload, shaped by the tool.",
+      "type": [
+        "object",
+        "array",
+        "string",
+        "number",
+        "boolean",
+        "null"
+      ]
+    },
+    "editorUrl": {
+      "description": "Opens this project in the editor.",
+      "type": "string"
+    },
+    "error": {
+      "description": "Why it failed.",
+      "type": "string"
+    },
+    "note": {
+      "description": "What to do next when not ready.",
+      "type": "string"
+    },
+    "ok": {
+      "description": "Whether the call succeeded.",
+      "type": "boolean"
+    },
+    "status": {
+      "description": "For cache-backed readers: whether the answer was ready.",
+      "enum": [
+        "ready",
+        "not-ready"
+      ],
+      "type": "string"
+    }
+  },
+  "required": [
+    "ok"
+  ],
+  "type": "object"
+}

Changed2 schema fields changedSep 11, 2026

addedInput schema / properties / anonymousToken

Added value: +{
+  "description": "The token create_anonymous_account returned. This connection has no Morpha key, so every call carries it.",
+  "type": "string"
+}

changedInput schema / required

Previous value: -[
-  "startFrame",
-  "endFrame",
-  "projectId"
-]New value: +[
+  "startFrame",
+  "endFrame",
+  "projectId",
+  "anonymousToken"
+]

First observedSep 7, 2026

TDQS

A4.8/5.0

Behavior5/5

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

Annotations already declare destructiveHint=true and readOnlyHint=false, but the description adds substantial behavioral context: it shifts every keyframe/marker/audio overlay/loop region/start_at, splits straddling video layers, truncates interior audio overlays, refuses on speed-ramp layers, shrinks composition length, and clamps endFrame. This goes far beyond the annotations and is critical for a destructive operation.

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 dense and front-loaded with the core operation, then details consequences and refusals. It is long but every sentence adds a distinct behavioral fact. It could be slightly more concise, but the complexity of the operation justifies the length.

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

Completeness5/5

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

Given the complexity of a ripple delete with source-aware video layers, speed ramps, audio overlays, and composition length changes, the description covers all the edge cases an agent needs to predict the outcome. The output schema exists, so return values don't need explanation. Nothing critical is missing.

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 description coverage is 100%, so the schema already documents all three parameters. The description adds meaning by explaining the frame semantics (0-indexed, 30 fps, exclusive endFrame, clamped to composition length) and the delta calculation, which is not fully in the schema. It doesn't add per-parameter detail beyond that, but the schema already covers the basics.

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 states a specific verb ('Ripple-delete'), the resource ('a time window [startFrame, endFrame)'), and the exact effect ('remove that span and pull all later content earlier by delta'). It clearly distinguishes this from other timeline operations like set_video_clip or move_band, and the title/description align.

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

Usage Guidelines5/5

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

The description explicitly says when to use it (ripple delete / close gap) and when NOT to: it 'REFUSES to cut across a video layer that carries speed-ramp keyframes' and instructs to 'remove them, or cut outside that layer's span, first.' This is explicit exclusion guidance beyond what the schema provides.

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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