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Animate image

animate_image

Animate an existing image or upload into a clip. Describe the motion in prompt; the image is frame zero, so it must show everyone who acts, at the height and distance the action needs: a clip cannot move what its first frame does not show. First search list_recipes for a matching motion recipe and read it with get_recipe. Prefer generate_with_recipe when its inputs and output fit; otherwise read the chosen model's guide and animate directly here.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "image": "<image>"
    },
    "name": "animate_image"
  }
}

Input Schema

NameRequiredDescriptionDefault
imageYes
modelNo
promptNo
presetsNo
runs_onNoWho pays: "credits", or one of the user's own keys by vendor (get_credits lists them). Leave out to follow their payer order; set it only when the user chose.
subjectsNoNames or ids of the account's Subjects (list_subjects). The server supplies each one's face and description — seated against the model's capacity — so do not also attach pictures of them.
last_frameNo
resolutionNo
first_frameNo
recreate_ofNo
aspect_ratioNoDefaults to 9:16 (vertical). Confirm the shape with the user when the destination is unclear — a feed, a banner and a phone screen want different ones. With a first frame, leave it out: the clip takes the frame's own shape, and a ratio that disagrees with the frame is refused.
generate_audioNo
duration_secondsNo
reference_audiosNo
reference_imagesNo
reference_videosNoThe video this clip is driven by — a source performance to copy, or the take a mouth is re-synced in. Uploads and clips you generated alike, in the shape list_media returns.

Output Schema

NameRequiredDescriptionDefault
messageYes
generationYesOne image, clip, voice-over or piece of music.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed21 schema fields changed
    • changedInput schema / properties / runs_on / enum
      Previous value: -[
-  "credits",
-  "replicate",
-  "fal",
-  "siray",
-  "runware",
-  "higgsfield",
-  "sunra"
-]New value: +[
+  "credits",
+  "replicate",
+  "fal",
+  "siray",
+  "runware",
+  "higgsfield",
+  "sunra",
+  "comfy"
+]
    • addedOutput schema / properties / generation / description
      Added value: +"One image, clip, voice-over or piece of music."
    • addedOutput schema / properties / generation / properties / app_url / description
      Added value: +"Opens it in the app."
    • addedOutput schema / properties / generation / properties / aspect_ratio / description
      Added value: +"Null for audio."
    • addedOutput schema / properties / generation / properties / created_at / format
      Added value: +"date-time"
    • addedOutput schema / properties / generation / properties / credits
      Added value: +{
+  "description": "Credits charged. Zero when your own provider key or the free allowance paid.",
+  "type": [
+    "number",
+    "null"
+  ]
+}
    • removedOutput schema / properties / generation / properties / credits_cost
      Removed value: -{
-  "type": [
-    "number",
-    "null"
-  ]
-}
    • addedOutput schema / properties / generation / properties / error / description
      Added value: +"Why it failed. Null otherwise."
    • removedOutput schema / properties / generation / properties / generation_id
      Removed value: -{
-  "format": "uuid",
-  "type": "string"
-}
    • addedOutput schema / properties / generation / properties / id
      Added value: +{
+  "format": "uuid",
+  "type": "string"
+}
    • removedOutput schema / properties / generation / properties / kind
      Removed value: -{
-  "enum": [
-    "image",
-    "video",
-    "audio",
-    "tool"
-  ],
-  "type": "string"
-}
    • addedOutput schema / properties / generation / properties / model / description
      Added value: +"The model id it was made with (`GET /v1/models`)."
    • addedOutput schema / properties / generation / properties / object
      Added value: +{
+  "const": "generation",
+  "type": "string"
+}
    • addedOutput schema / properties / generation / properties / output_url / description
      Added value: +"The finished file, once `ready`. A signed link that works for about an hour; read the generation again for a fresh one."
    • addedOutput schema / properties / generation / properties / paid_by / description
      Added value: +"Who paid: \"credits\", \"house\" (the free allowance), \"server\" (a server that charges nothing), or the vendor of your own key (\"replicate\", \"fal\", …)."
    • addedOutput schema / properties / generation / properties / ready_in_seconds / description
      Added value: +"Roughly how long an unfinished generation has left; 0 means past its usual time."
    • addedOutput schema / properties / generation / properties / recipe_id
      Added value: +{
+  "anyOf": [
+    {
+      "$ref": "#/properties/generation/properties/id"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "The recipe it was made with, if any."
+}
    • addedOutput schema / properties / generation / properties / status / description
      Added value: +"`ready` and `failed` are final."
    • addedOutput schema / properties / generation / properties / thumbnail_url
      Added value: +{
+  "anyOf": [
+    {
+      "$ref": "#/properties/generation/properties/output_url/anyOf/0"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "A small still of the result, for a grid. Null for audio and while it works."
+}
    • addedOutput schema / properties / generation / properties / type
      Added value: +{
+  "description": "What was made. New values may be added; treat an unknown one as opaque.",
+  "enum": [
+    "image",
+    "clip",
+    "voiceover",
+    "music",
+    "tool"
+  ],
+  "type": "string"
+}
    • changedOutput schema / properties / generation / required
      Previous value: -[
-  "generation_id",
-  "kind",
-  "status",
-  "model",
-  "prompt",
-  "aspect_ratio",
-  "refined_from",
-  "caption_style",
-  "output_url",
-  "credits_cost",
-  "paid_by",
-  "error",
-  "vendor_phase",
-  "stalled",
-  "ready_in_seconds",
-  "created_at",
-  "app_url"
-]New value: +[
+  "object",
+  "id",
+  "type",
+  "status",
+  "model",
+  "prompt",
+  "aspect_ratio",
+  "output_url",
+  "thumbnail_url",
+  "credits",
+  "paid_by",
+  "error",
+  "ready_in_seconds",
+  "recipe_id",
+  "created_at",
+  "app_url",
+  "refined_from",
+  "caption_style",
+  "vendor_phase",
+  "stalled"
+]
  2. Changed3 schema fields changed
    • addedInput schema / properties / runs_on
      Added value: +{
+  "description": "Who pays: \"credits\", or one of the user's own keys by vendor (get_credits lists them). Leave out to follow their payer order; set it only when the user chose.",
+  "enum": [
+    "credits",
+    "replicate",
+    "fal",
+    "siray",
+    "runware",
+    "higgsfield",
+    "sunra"
+  ],
+  "type": "string"
+}
    • addedOutput schema / properties / generation / properties / paid_by
      Added value: +{
+  "type": [
+    "string",
+    "null"
+  ]
+}
    • changedOutput schema / properties / generation / required
      Previous value: -[
-  "generation_id",
-  "kind",
-  "status",
-  "model",
-  "prompt",
-  "aspect_ratio",
-  "refined_from",
-  "caption_style",
-  "output_url",
-  "credits_cost",
-  "error",
-  "vendor_phase",
-  "stalled",
-  "ready_in_seconds",
-  "created_at",
-  "app_url"
-]New value: +[
+  "generation_id",
+  "kind",
+  "status",
+  "model",
+  "prompt",
+  "aspect_ratio",
+  "refined_from",
+  "caption_style",
+  "output_url",
+  "credits_cost",
+  "paid_by",
+  "error",
+  "vendor_phase",
+  "stalled",
+  "ready_in_seconds",
+  "created_at",
+  "app_url"
+]
  3. Changed2 schema fields changed
    • addedOutput schema / properties / generation / properties / ready_in_seconds
      Added value: +{
+  "type": [
+    "number",
+    "null"
+  ]
+}
    • changedOutput schema / properties / generation / required
      Previous value: -[
-  "generation_id",
-  "kind",
-  "status",
-  "model",
-  "prompt",
-  "aspect_ratio",
-  "refined_from",
-  "caption_style",
-  "output_url",
-  "credits_cost",
-  "error",
-  "vendor_phase",
-  "stalled",
-  "created_at",
-  "app_url"
-]New value: +[
+  "generation_id",
+  "kind",
+  "status",
+  "model",
+  "prompt",
+  "aspect_ratio",
+  "refined_from",
+  "caption_style",
+  "output_url",
+  "credits_cost",
+  "error",
+  "vendor_phase",
+  "stalled",
+  "ready_in_seconds",
+  "created_at",
+  "app_url"
+]
  4. Changed3 schema fields changed
    • changedInput schema / properties / reference_audios / maxItems
      Previous value: -3New value: +10
    • changedInput schema / properties / reference_images / maxItems
      Previous value: -9New value: +30
    • changedInput schema / properties / reference_videos / maxItems
      Previous value: -3New value: +10
  5. Changed1 schema field changed
    • changedInput schema / properties / duration_seconds / anyOf
      Previous value: -[
-  {
-    "const": -1,
-    "type": "number"
-  },
-  {
-    "maximum": 15,
-    "minimum": 1,
-    "type": "integer"
-  }
-]New value: +[
+  {
+    "const": -1,
+    "type": "number"
+  },
+  {
+    "maximum": 1800,
+    "minimum": 1,
+    "type": "integer"
+  }
+]
  6. First observed

TDQS

A4/5.0
Behavior4/5

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

Annotations supply the safety profile (non-read-only, non-destructive, non-idempotent), so the description's job is to add behavior. It does: the first frame is a hard constraint — anything that must move has to already appear in it at the right height and distance. It omits cost/credit implications and whether generation is asynchronous, which matters for a paid render.

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?

Front-loads the action, then the frame-zero constraint, then the routing advice — a sensible order. The frame-zero sentence is slightly repetitive ('must show everyone who acts... cannot move what its first frame does not show') but the redundancy serves emphasis rather than waste.

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?

An output schema exists, so return values need no explanation, and the recipe-vs-direct routing is covered. But for a 16-parameter mutation tool spanning 29 models, the description leaves model choice, cost/payer behavior, and output timing entirely to structured fields or to external documents it only points at.

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

Parameters3/5

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

Schema description coverage is only 25%, so the description must carry most of the semantic load. It explains what `prompt` means (describe the motion) and constrains the first-frame/image relationship, plus hints at model selection via the guide. It says nothing about the 29-value model enum, presets, resolution, duration_seconds, subjects, or the reference_* arrays, leaving most parameters to raw schema.

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?

States a specific verb and resource: animate an existing image/upload into a clip, with the image as frame zero. This implicitly separates it from text-driven siblings like generate_clip and from generate_with_recipe, though it never names generate_clip or animate_scenes explicitly as the non-image alternatives.

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?

Gives an explicit ordered workflow: search list_recipes for a motion recipe, read it with get_recipe, prefer generate_with_recipe when its inputs/output fit, otherwise read the model's guide and animate directly here. Both the preferred path and the fallback condition are spelled out.

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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