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BlitzReels Video Editor

by com.blitzreels
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Generate Image

generation_image_create
DestructiveIdempotent

Queue an AI image generation into the BlitzReels media library. Spends AI credits and returns a job to poll with generation_jobs_get.

Input Schema

NameRequiredDescriptionDefault
sizeNoExact output size as WIDTHxHEIGHT, for example 1920x2304. Only models whose parameters.size.supported is true in generation_options_list; it replaces aspectRatio, and credits scale with pixel count.
modelNoImage model. Call generation_options_list for costs.fal-ai/nano-banana-2
promptYesWhat the image should show (8-5000 characters).
folderIdNoOptional media library folder ID.
resolutionNoNative image resolution. Call generation_options_list for model support and resolution pricing. Unsupported settings are rejected.
aspectRatioNoOutput aspect ratio.1:1
characterIdNoWorkspace character to keep consistent (characters_list). Its reference images or trained weights and description are added; they count toward the model reference limit.
workspaceIdNoOptional workspace ID. Defaults to the user's default workspace. UUID string.
enhancePromptNoEnhance using BlitzReels model grammar and actual input context.
idempotencyKeyNoRetry key. Reuse only with identical inputs.
referenceAssetIdsNoOrdered image references. Model-specific limits are listed in generation_options_list; unsupported references fail.

Output Schema

NameRequiredDescriptionDefault
generationYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • changedInput schema / properties / model / enum
      Previous value: -[
-  "fal-ai/gpt-image-1",
-  "fal-ai/gpt-image-1.5",
-  "fal-ai/gpt-image-2",
-  "fal-ai/gpt-image-2.5-flare",
-  "fal-ai/gpt-image-2.5-sunburst",
-  "xai/grok-imagine-image-2.0",
-  "bfl/flux-3-image",
-  "bfl/flux-3-image-klein",
-  "fal-ai/bytedance/seedream/v5/lite/text-to-image",
-  "bytedance/seedream/v5/pro/text-to-image",
-  "fal-ai/krea-2/turbo",
-  "fal-ai/krea/v2/medium/turbo/text-to-image",
-  "fal-ai/krea/v2/medium/text-to-image",
-  "fal-ai/krea/v3/text-to-image",
-  "fal-ai/meta/muse-image/text-to-image",
-  "fal-ai/nano-banana-2",
-  "google/nano-banana-2.1",
-  "google/nano-banana-2-lite",
-  "fal-ai/nano-banana-pro"
-]New value: +[
+  "fal-ai/gpt-image-1",
+  "fal-ai/gpt-image-1.5",
+  "fal-ai/gpt-image-2",
+  "fal-ai/gpt-image-2.5-flare",
+  "fal-ai/gpt-image-2.5-sunburst",
+  "xai/grok-imagine-image-2.0",
+  "bfl/flux-3-image",
+  "bfl/flux-3-image-klein",
+  "fal-ai/bytedance/seedream/v5/lite/text-to-image",
+  "bytedance/seedream/v5/pro/text-to-image",
+  "fal-ai/krea-2/turbo",
+  "fal-ai/krea/v2/medium/turbo/text-to-image",
+  "fal-ai/krea/v2/medium/text-to-image",
+  "fal-ai/krea/v3/text-to-image",
+  "fal-ai/meta/muse-image/text-to-image",
+  "fal-ai/bria/fibo-2/generate",
+  "fal-ai/nano-banana-2",
+  "google/nano-banana-2.1",
+  "google/nano-banana-2-lite",
+  "fal-ai/nano-banana-pro"
+]
  2. Changed3 schema fields changed
    • addedInput schema / properties / characterId
      Added value: +{
+  "description": "Workspace character to keep consistent (characters_list). Its reference images or trained weights and description are added; they count toward the model reference limit.",
+  "format": "uuid",
+  "type": "string"
+}
    • changedInput schema / properties / model / enum
      Previous value: -[
-  "fal-ai/gpt-image-1",
-  "fal-ai/gpt-image-1.5",
-  "fal-ai/gpt-image-2",
-  "fal-ai/gpt-image-2.5-flare",
-  "fal-ai/gpt-image-2.5-sunburst",
-  "xai/grok-imagine-image-2.0",
-  "bfl/flux-3-image",
-  "fal-ai/bytedance/seedream/v5/lite/text-to-image",
-  "bytedance/seedream/v5/pro/text-to-image",
-  "fal-ai/krea-2/turbo",
-  "fal-ai/krea/v2/medium/turbo/text-to-image",
-  "fal-ai/krea/v2/medium/text-to-image",
-  "fal-ai/nano-banana-2",
-  "google/nano-banana-2.1",
-  "google/nano-banana-2-lite",
-  "fal-ai/nano-banana-pro"
-]New value: +[
+  "fal-ai/gpt-image-1",
+  "fal-ai/gpt-image-1.5",
+  "fal-ai/gpt-image-2",
+  "fal-ai/gpt-image-2.5-flare",
+  "fal-ai/gpt-image-2.5-sunburst",
+  "xai/grok-imagine-image-2.0",
+  "bfl/flux-3-image",
+  "bfl/flux-3-image-klein",
+  "fal-ai/bytedance/seedream/v5/lite/text-to-image",
+  "bytedance/seedream/v5/pro/text-to-image",
+  "fal-ai/krea-2/turbo",
+  "fal-ai/krea/v2/medium/turbo/text-to-image",
+  "fal-ai/krea/v2/medium/text-to-image",
+  "fal-ai/krea/v3/text-to-image",
+  "fal-ai/meta/muse-image/text-to-image",
+  "fal-ai/nano-banana-2",
+  "google/nano-banana-2.1",
+  "google/nano-banana-2-lite",
+  "fal-ai/nano-banana-pro"
+]
    • addedInput schema / properties / size
      Added value: +{
+  "anyOf": [
+    {
+      "pattern": "^[1-9][0-9]{1,4}x[1-9][0-9]{1,4}$",
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "description": "Exact output size as WIDTHxHEIGHT, for example 1920x2304. Only models whose parameters.size.supported is true in generation_options_list; it replaces aspectRatio, and credits scale with pixel count."
+}
  3. Changed1 schema field changed
    • changedInput schema / properties / model / enum
      Previous value: -[
-  "fal-ai/gpt-image-1",
-  "fal-ai/gpt-image-1.5",
-  "fal-ai/gpt-image-2",
-  "fal-ai/gpt-image-2.5-flare",
-  "fal-ai/gpt-image-2.5-sunburst",
-  "xai/grok-imagine-image-2.0",
-  "fal-ai/bytedance/seedream/v5/lite/text-to-image",
-  "bytedance/seedream/v5/pro/text-to-image",
-  "fal-ai/krea-2/turbo",
-  "fal-ai/krea/v2/medium/turbo/text-to-image",
-  "fal-ai/krea/v2/medium/text-to-image",
-  "fal-ai/nano-banana-2",
-  "google/nano-banana-2.1",
-  "google/nano-banana-2-lite",
-  "fal-ai/nano-banana-pro"
-]New value: +[
+  "fal-ai/gpt-image-1",
+  "fal-ai/gpt-image-1.5",
+  "fal-ai/gpt-image-2",
+  "fal-ai/gpt-image-2.5-flare",
+  "fal-ai/gpt-image-2.5-sunburst",
+  "xai/grok-imagine-image-2.0",
+  "bfl/flux-3-image",
+  "fal-ai/bytedance/seedream/v5/lite/text-to-image",
+  "bytedance/seedream/v5/pro/text-to-image",
+  "fal-ai/krea-2/turbo",
+  "fal-ai/krea/v2/medium/turbo/text-to-image",
+  "fal-ai/krea/v2/medium/text-to-image",
+  "fal-ai/nano-banana-2",
+  "google/nano-banana-2.1",
+  "google/nano-banana-2-lite",
+  "fal-ai/nano-banana-pro"
+]
  4. Changed1 schema field changed
    • changedInput schema / properties / model / enum
      Previous value: -[
-  "fal-ai/gpt-image-1",
-  "fal-ai/gpt-image-1.5",
-  "fal-ai/gpt-image-2",
-  "fal-ai/gpt-image-2.5-flare",
-  "fal-ai/gpt-image-2.5-sunburst",
-  "xai/grok-imagine-image-2.0",
-  "fal-ai/bytedance/seedream/v5/lite/text-to-image",
-  "bytedance/seedream/v5/pro/text-to-image",
-  "fal-ai/krea-2/turbo",
-  "fal-ai/krea/v2/medium/turbo/text-to-image",
-  "fal-ai/krea/v2/medium/text-to-image",
-  "fal-ai/nano-banana-2",
-  "google/nano-banana-2-lite",
-  "fal-ai/nano-banana-pro"
-]New value: +[
+  "fal-ai/gpt-image-1",
+  "fal-ai/gpt-image-1.5",
+  "fal-ai/gpt-image-2",
+  "fal-ai/gpt-image-2.5-flare",
+  "fal-ai/gpt-image-2.5-sunburst",
+  "xai/grok-imagine-image-2.0",
+  "fal-ai/bytedance/seedream/v5/lite/text-to-image",
+  "bytedance/seedream/v5/pro/text-to-image",
+  "fal-ai/krea-2/turbo",
+  "fal-ai/krea/v2/medium/turbo/text-to-image",
+  "fal-ai/krea/v2/medium/text-to-image",
+  "fal-ai/nano-banana-2",
+  "google/nano-banana-2.1",
+  "google/nano-banana-2-lite",
+  "fal-ai/nano-banana-pro"
+]
  5. Changed1 schema field changed
    • changedInput schema / properties / model / enum
      Previous value: -[
-  "fal-ai/gpt-image-1",
-  "fal-ai/gpt-image-1.5",
-  "fal-ai/gpt-image-2",
-  "xai/grok-imagine-image-2.0",
-  "fal-ai/bytedance/seedream/v5/lite/text-to-image",
-  "bytedance/seedream/v5/pro/text-to-image",
-  "fal-ai/krea-2/turbo",
-  "fal-ai/krea/v2/medium/turbo/text-to-image",
-  "fal-ai/krea/v2/medium/text-to-image",
-  "fal-ai/nano-banana-2",
-  "google/nano-banana-2-lite",
-  "fal-ai/nano-banana-pro"
-]New value: +[
+  "fal-ai/gpt-image-1",
+  "fal-ai/gpt-image-1.5",
+  "fal-ai/gpt-image-2",
+  "fal-ai/gpt-image-2.5-flare",
+  "fal-ai/gpt-image-2.5-sunburst",
+  "xai/grok-imagine-image-2.0",
+  "fal-ai/bytedance/seedream/v5/lite/text-to-image",
+  "bytedance/seedream/v5/pro/text-to-image",
+  "fal-ai/krea-2/turbo",
+  "fal-ai/krea/v2/medium/turbo/text-to-image",
+  "fal-ai/krea/v2/medium/text-to-image",
+  "fal-ai/nano-banana-2",
+  "google/nano-banana-2-lite",
+  "fal-ai/nano-banana-pro"
+]
  6. Changed4 schema fields changed
    • addedInput schema / properties / enhancePrompt
      Added value: +{
+  "default": false,
+  "description": "Enhance using BlitzReels model grammar and actual input context.",
+  "type": "boolean"
+}
    • changedInput schema / properties / referenceAssetIds / description
      Previous value: -"Up to 4 existing image asset IDs to use as style or subject references."New value: +"Ordered image references. Model-specific limits are listed in generation_options_list; unsupported references fail."
    • changedInput schema / properties / referenceAssetIds / maxItems
      Previous value: -4New value: +14
    • addedInput schema / properties / resolution
      Added value: +{
+  "anyOf": [
+    {
+      "enum": [
+        "0.5k",
+        "1k",
+        "2k",
+        "4k"
+      ],
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "description": "Native image resolution. Call generation_options_list for model support and resolution pricing. Unsupported settings are rejected."
+}
  7. Changed1 schema field changed
    • changedInput schema / properties / model / enum
      Previous value: -[
-  "fal-ai/gpt-image-1",
-  "fal-ai/gpt-image-1.5",
-  "fal-ai/gpt-image-2",
-  "xai/grok-imagine-image-2.0-preview",
-  "fal-ai/bytedance/seedream/v5/lite/text-to-image",
-  "bytedance/seedream/v5/pro/text-to-image",
-  "fal-ai/krea-2/turbo",
-  "fal-ai/krea/v2/medium/turbo/text-to-image",
-  "fal-ai/krea/v2/medium/text-to-image",
-  "fal-ai/nano-banana-2",
-  "google/nano-banana-2-lite",
-  "fal-ai/nano-banana-pro"
-]New value: +[
+  "fal-ai/gpt-image-1",
+  "fal-ai/gpt-image-1.5",
+  "fal-ai/gpt-image-2",
+  "xai/grok-imagine-image-2.0",
+  "fal-ai/bytedance/seedream/v5/lite/text-to-image",
+  "bytedance/seedream/v5/pro/text-to-image",
+  "fal-ai/krea-2/turbo",
+  "fal-ai/krea/v2/medium/turbo/text-to-image",
+  "fal-ai/krea/v2/medium/text-to-image",
+  "fal-ai/nano-banana-2",
+  "google/nano-banana-2-lite",
+  "fal-ai/nano-banana-pro"
+]
  8. Changed1 schema field changed
    • changedInput schema / properties / model / enum
      Previous value: -[
-  "fal-ai/gpt-image-1",
-  "fal-ai/gpt-image-1.5",
-  "fal-ai/gpt-image-2",
-  "fal-ai/bytedance/seedream/v5/lite/text-to-image",
-  "bytedance/seedream/v5/pro/text-to-image",
-  "fal-ai/krea-2/turbo",
-  "fal-ai/krea/v2/medium/turbo/text-to-image",
-  "fal-ai/krea/v2/medium/text-to-image",
-  "fal-ai/nano-banana-2",
-  "google/nano-banana-2-lite",
-  "fal-ai/nano-banana-pro"
-]New value: +[
+  "fal-ai/gpt-image-1",
+  "fal-ai/gpt-image-1.5",
+  "fal-ai/gpt-image-2",
+  "xai/grok-imagine-image-2.0-preview",
+  "fal-ai/bytedance/seedream/v5/lite/text-to-image",
+  "bytedance/seedream/v5/pro/text-to-image",
+  "fal-ai/krea-2/turbo",
+  "fal-ai/krea/v2/medium/turbo/text-to-image",
+  "fal-ai/krea/v2/medium/text-to-image",
+  "fal-ai/nano-banana-2",
+  "google/nano-banana-2-lite",
+  "fal-ai/nano-banana-pro"
+]
  9. First observed

TDQS

A4/5.0
Behavior3/5

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

Annotations already declare non-read-only, destructive, idempotent, and open-world behavior; the description adds genuinely useful context that the call spends AI credits (a cost the annotations do not convey) and returns an asynchronous job handle. However, it doesn't reconcile the destructiveHint=true flag or explain what idempotencyKey protects against, and with credit spend being the key risk, a 3 is fair rather than generous.

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 short sentences, front-loaded with the action and destination, then the cost and the follow-up step. Every clause earns its place with no restatement of the title.

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?

For an 11-parameter async job-creation tool with annotations and an output schema, the description covers the essentials: what it produces, that it costs credits, and how to track the result. It could say slightly more about the credit magnitude or the idempotency-retry expectation, but nothing critical is missing.

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 100%, so all 11 parameters including the model enum, size/resolution constraints, characterId, and referenceAssetIds are already documented in the schema. The description adds no parameter-level meaning beyond that, so the baseline 3 applies.

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?

States a specific verb (queue), resource (AI image generation) and destination (BlitzReels media library), which cleanly separates it from the many sibling generation_* tools that produce video, music, sound, voiceover, or faceless content. An agent can identify the tool's role without opening the schema.

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?

Gives clear context for use (create an image job) and routes the follow-up step explicitly to generation_jobs_get for polling, which is a real workflow hint. It does not state exclusions or contrast with generation_video_create / generation_faceless_create when a prompt could apply to either.

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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