# Blender 3D Modeling ## Links - Product page URL: https://www.agentpmt.com/marketplace/blender-3d-modeling - Product markdown URL: https://www.agentpmt.com/marketplace/blender-3d-modeling?format=agent-md - Product JSON URL: https://www.agentpmt.com/marketplace/blender-3d-modeling?format=agent-json ## Overview - Product ID: 69c43a6b87d290b84efb81ab - Vendor: Apoth3osis - Type: model - Unit type: request - Price: 2500 credits - Categories: Developer Tools, Data Processing, 3D Design & Modeling, Video Game Design, Video & Motion Graphics, Task & Workflow Automation - Generated at: 2026-05-14T07:06:09.187Z ### Page Description Full access to Blender, the industry-standard open-source 3D creation suite, running headless in the cloud. Render stunning images and turntable videos from any 3D model, convert between file formats (BLEND, GLB, FBX, OBJ, STL, DAE, PLY), set up professional studio lighting, and run custom Blender Python scripts — all without installing anything locally. Upload your 3D models and get back production-quality renders, spinning animations, processed assets, and Blender project files. Choose from four lighting presets (studio, product, outdoor, dramatic), render from multiple camera angles at once, or position the camera exactly where you want it. Perfect for game development asset previews, product visualization, architectural walkthroughs, e-commerce 3D photography, 3D printing prep, portfolio showcases, and creative projects of any kind. ### Agent Description Blender 3D suite running headless in the cloud. Render 3D models to images and video, create turntable animations, render multi-angle views, convert between 3D formats (BLEND/GLB/FBX/OBJ/STL/DAE/PLY), compose scenes with four lighting presets (studio, product, outdoor, dramatic), save generated scenes as .blend project files, and execute custom Blender Python scripts. Accepts models via file URL or file storage ID. Returns rendered output and exported assets as downloadable files stored for 7 days. ## Details ### Details Full access to Blender, the industry-standard open-source 3D creation suite, running headless in the cloud. Render stunning images and turntable videos from any 3D model, convert between file formats (BLEND, GLB, FBX, OBJ, STL, DAE, PLY), set up professional studio lighting, and run custom Blender Python scripts — all without installing anything locally. Upload your 3D models and get back production-quality renders, spinning animations, processed assets, and Blender project files. Choose from four lighting presets (studio, product, outdoor, dramatic), render from multiple camera angles at once, or position the camera exactly where you want it. Perfect for game development asset previews, product visualization, architectural walkthroughs, e-commerce 3D photography, 3D printing prep, portfolio showcases, and creative projects of any kind. ### Actions - `render_turntable` (25 credits): Generate a spinning turntable video of a 3D model. Returns a task_id immediately; use get_task to check progress and retrieve the output. Joins the strict-FIFO render queue (capacity 50); if the queue is full, returns a 429 with error_code GPU_RENDER_QUEUE_FULL and a Retry-After header. - `render_views` (25 credits): Render preset camera angles. Returns a task_id immediately. Joins the strict-FIFO render queue. - `render_custom` (25 credits): Render with a custom camera position. Returns a task_id immediately. Joins the strict-FIFO render queue. - `convert_format` (25 credits): Convert a 3D model between file formats. Runs synchronously through the queue; if the queue is full, returns 429 with error_code GPU_RENDER_QUEUE_FULL. - `run_script` (25 credits): Execute a custom Blender Python script. Returns a task_id immediately. Script payload limited to 65,536 bytes — oversize requests fail with error_code BLENDER_RUN_SCRIPT_TOO_LARGE. - `check_printability` (25 credits): Run a structured 3D-printability analysis using Blender's object_print3d_utils addon. Read-only — no upload, no mesh mutation. Returns a task_id immediately. - `fix_printability` (25 credits): Light-touch repair using Blender's object_print3d_utils clean operators. For mostly-clean inputs (CAD exports, few stray non-manifolds). Use voxel_remesh for structurally-broken inputs. - `voxel_remesh` (25 credits): Rebuild a model into a watertight manifold via OpenVDB voxel remesh. The right tool for structurally-broken inputs. Output is guaranteed manifold; surface detail smaller than the voxel size is smoothed away. Pre-flight rejects requests whose grid cell count exceeds 5,000,000 with error_code BLENDER_VOXEL_GRID_TOO_LARGE — the response message includes the minimum-safe voxel_size for the input, and the report context exposes bbox_x/y/z, voxel_size, cells, max_cells, and min_safe_voxel_size for runbooks. - `slice_for_printing` (25 credits): Slice a 3D model with PrusaSlicer and return G-code, parsed metadata, and a Blender-rendered printbed preview PNG. Returns a task_id immediately. - `get_task` (25 credits): Check the status of a render task and retrieve download links when complete. Non-terminal responses include queue_position (0 when running, 1+ when queued), queue_eta_seconds, and queue_stats {queue_total_running, queue_total_queued, queue_total_capacity}. Caller-driven failures (GPU_RENDER_QUEUE_FULL, BLENDER_VOXEL_GRID_TOO_LARGE, BLENDER_RUN_SCRIPT_TOO_LARGE, GPU_RENDER_TASK_CANCELED, BLENDER_SLICER_PROFILE_INVALID) report at warning severity and are safe to retry with corrected inputs; subprocess / memory / timeout failures (GPU_RENDER_BLENDER_NONZERO_EXIT, GPU_RENDER_BLENDER_TIMEOUT, BLENDER_SUBPROCESS_MEMORY_LIMIT, GPU_RENDER_CONTAINER_RESTARTED, GPU_RENDER_UNEXPECTED_ERROR) report at error severity — retry once but escalate if it recurs. - `list_tasks` (25 credits): List render tasks for the current user, most recent first. - `cancel_task` (25 credits): Cancel a queued or running render task. Idempotent: cancelling an already-terminal task returns an error explaining that. Queued tasks transition immediately; running tasks transition once the SIGTERM grace window closes (≤30s). The task ends with status='failed' and error_code='GPU_RENDER_TASK_CANCELED'. Poll get_task to confirm the terminal state. ### Use Cases Render turntable videos of 3D models for game asset previews, Create multi-angle product shots from 3D models for e-commerce, Convert 3D files between formats like GLB to BLEND, GLB to FBX, or OBJ to STL, Save procedurally generated scenes as Blender .blend files, Generate professional renders with studio lighting for portfolios, Preview 3D-printed models from every angle before printing, Render architectural models with custom camera positions, Create spinning animations of characters or props for social media, Apply dramatic lighting to 3D models for cinematic presentations, Run custom Blender Python scripts for advanced 3D processing, Render 3D models generated by AI tools like Meshy with proper textures and lighting, Convert game assets between Unity FBX and web GLB formats, Generate thumbnail images of 3D models for catalogs and marketplaces ### Workflows Using This Tool No public workflows currently reference this product. ### Related Content #### Blender 3D Modeling Is Live on AgentPMT - Type: article - Page URL: https://www.agentpmt.com/articles/blender-3d-modeling-is-live-on-agentpmt - Markdown URL: https://www.agentpmt.com/articles/blender-3d-modeling-is-live-on-agentpmt?format=agent-md AI agents can now render 3D models, generate turntable videos, convert file formats, and run custom Blender Python scripts through AgentPMT at 25 credits per call. ## Integration Details ### DynamicMCP - Setup page URL: https://www.agentpmt.com/dynamic-mcp - Claude setup guide: https://www.agentpmt.com/dynamic-mcp?platform=claude#videos - ChatGPT setup guide: https://www.agentpmt.com/dynamic-mcp?platform=chatgpt#videos - Cursor setup guide: https://www.agentpmt.com/dynamic-mcp?platform=cursor#videos - Windsurf setup guide: https://www.agentpmt.com/dynamic-mcp?platform=windsurf#videos STDIO connector for Claude Code, Codex, Cursor, Zed, and other LLMs that require STDIO or custom connections. This lightweight connector routes requests to `https://api.agentpmt.com/mcp`. All tool execution happens in the cloud and the server cannot edit any files on your computer. ```bash npm install -g @agentpmt/mcp-router agentpmt-setup ``` ### REST API The live page renders cURL, Python, JavaScript, and Node.js examples. Logged-in users see those examples prefilled with their own API and budget credentials. - Purchase endpoint: https://api.agentpmt.com/products/purchase - Authorization format: `Bearer ` ```bash curl -X POST "https://api.agentpmt.com/products/purchase" \ -H "Content-Type: application/json" \ -H "Authorization: Bearer eW91ci1hcGkta2V5LWhlcmU6eW91ci1idWRnZXQta2V5LWhlcmU=" \ -d '{ "product_id": "69c43a6b87d290b84efb81ab", "parameters": { "action": "render_turntable" } }' ``` ### Autonomous Agents Do not use the abbreviated instructions in this product markdown for wallet-based invocation. Retrieve the full External Agent API markdown document instead. - External Agent API page URL: https://www.agentpmt.com/external-agent-api - External Agent API markdown URL: https://www.agentpmt.com/external-agent-api?format=agent-md ### Schema #### Parameters - Schema type: actions ```json { "actions": { "render_turntable": { "description": "Generate a spinning turntable video of a 3D model. Returns a task_id immediately; use get_task to check progress and retrieve the output. Joins the strict-FIFO render queue (capacity 50); if the queue is full, returns a 429 with error_code GPU_RENDER_QUEUE_FULL and a Retry-After header.", "properties": { "file_url": { "type": "string", "description": "Public URL of the 3D model file (BLEND, GLB, GLTF, FBX, OBJ, STL, DAE, PLY).", "required": false }, "file_id": { "type": "string", "description": "AgentPMT file storage ID for the 3D model.", "required": false }, "frames": { "type": "integer", "description": "Number of animation frames (12-120). Default: 72.", "required": false, "minimum": 12, "maximum": 120 }, "duration_seconds": { "type": "number", "description": "Video duration in seconds (1-30). Default: 6.", "required": false, "minimum": 1, "maximum": 30 }, "resolution": { "type": "string", "description": "Resolution: 720p (default), 1080p, 2k, 4k, or WxH.", "required": false }, "samples": { "type": "integer", "description": "Render samples (1-512). Default: 8.", "required": false, "minimum": 1, "maximum": 512 }, "background_color": { "type": "string", "description": "Background hex color without #. Default: 1a1a1a.", "required": false }, "lighting_preset": { "type": "string", "description": "Lighting style.", "required": false, "enum": [ "studio", "product", "outdoor", "dramatic" ] }, "elevation": { "type": "number", "description": "Camera elevation degrees (-45 to 90). Default: 25.", "required": false, "minimum": -45, "maximum": 90 }, "camera_distance": { "type": "number", "description": "Optional camera distance override.", "required": false, "minimum": 0.1, "maximum": 100 }, "camera_lens_mm": { "type": "number", "description": "Camera focal length in mm (10-120). Default: 35.", "required": false, "minimum": 10, "maximum": 120 }, "fit_margin": { "type": "number", "description": "Auto-framing padding multiplier (1-3). Default: 1.25.", "required": false, "minimum": 1, "maximum": 3 }, "decimate_ratio": { "type": "number", "description": "Optional polygon-reduction ratio (0.05-1.0).", "required": false, "minimum": 0.05, "maximum": 1 } } }, "render_views": { "description": "Render preset camera angles. Returns a task_id immediately. Joins the strict-FIFO render queue.", "properties": { "file_url": { "type": "string", "description": "Public URL of the 3D model file.", "required": false }, "file_id": { "type": "string", "description": "AgentPMT file storage ID.", "required": false }, "views": { "type": "array", "description": "Views to render. Default: front, back, left, right, top, 3quarter.", "required": false, "items": { "type": "string", "enum": [ "front", "back", "left", "right", "top", "bottom", "3quarter" ] } }, "resolution": { "type": "string", "description": "Resolution: 720p (default), 1080p, 2k, 4k, or WxH.", "required": false }, "samples": { "type": "integer", "description": "Render samples (1-512). Default: 8.", "required": false, "minimum": 1, "maximum": 512 }, "background_color": { "type": "string", "description": "Background hex color without #. Default: 1a1a1a.", "required": false }, "lighting_preset": { "type": "string", "description": "Lighting style.", "required": false, "enum": [ "studio", "product", "outdoor", "dramatic" ] }, "camera_distance": { "type": "number", "description": "Optional camera distance override.", "required": false, "minimum": 0.1, "maximum": 100 }, "camera_lens_mm": { "type": "number", "description": "Camera focal length in mm (10-120). Default: 35.", "required": false, "minimum": 10, "maximum": 120 }, "fit_margin": { "type": "number", "description": "Auto-framing padding multiplier (1-3). Default: 1.25.", "required": false, "minimum": 1, "maximum": 3 }, "decimate_ratio": { "type": "number", "description": "Optional polygon-reduction ratio (0.05-1.0).", "required": false, "minimum": 0.05, "maximum": 1 } } }, "render_custom": { "description": "Render with a custom camera position. Returns a task_id immediately. Joins the strict-FIFO render queue.", "properties": { "file_url": { "type": "string", "required": false, "description": "Public URL of the 3D model file." }, "file_id": { "type": "string", "required": false, "description": "AgentPMT file storage ID." }, "camera_position": { "type": "array", "description": "Camera [x, y, z] position. Default: [3, -3, 2.5].", "required": false, "items": { "type": "number" } }, "look_at": { "type": "array", "description": "Camera look-at [x, y, z] target. Default: [0, 0, 0].", "required": false, "items": { "type": "number" } }, "fov": { "type": "number", "description": "Camera focal length in mm (10-120). Default: 50.", "required": false, "minimum": 10, "maximum": 120 }, "resolution": { "type": "string", "required": false, "description": "Resolution preset or WxH." }, "samples": { "type": "integer", "required": false, "minimum": 1, "maximum": 512, "description": "Render samples." }, "background_color": { "type": "string", "required": false, "description": "Background hex color without #." }, "lighting_preset": { "type": "string", "required": false, "enum": [ "studio", "product", "outdoor", "dramatic" ], "description": "Lighting style." }, "decimate_ratio": { "type": "number", "description": "Optional polygon-reduction ratio (0.05-1.0).", "required": false, "minimum": 0.05, "maximum": 1 } } }, "convert_format": { "description": "Convert a 3D model between file formats. Runs synchronously through the queue; if the queue is full, returns 429 with error_code GPU_RENDER_QUEUE_FULL.", "properties": { "file_url": { "type": "string", "required": false, "description": "Public URL of the source 3D model." }, "file_id": { "type": "string", "required": false, "description": "AgentPMT file storage ID for the source 3D model." }, "output_format": { "type": "string", "description": "Target format.", "required": true, "enum": [ "blend", "glb", "fbx", "obj", "stl", "dae", "ply" ] }, "apply_transforms": { "type": "boolean", "description": "Apply transforms before export. Default: true.", "required": false } } }, "run_script": { "description": "Execute a custom Blender Python script. Returns a task_id immediately. Script payload limited to 65,536 bytes — oversize requests fail with error_code BLENDER_RUN_SCRIPT_TOO_LARGE.", "properties": { "file_url": { "type": "string", "required": false, "description": "Optional model URL — exposed as MODEL_PATH." }, "file_id": { "type": "string", "required": false, "description": "Optional AgentPMT file storage ID — exposed as MODEL_PATH." }, "script": { "type": "string", "description": "Blender Python script (≤64 KiB). Has access to bpy, MODEL_PATH, OUTPUT_DIR.", "required": true }, "output_type": { "type": "string", "required": false, "enum": [ "image", "video", "model", "all" ], "description": "Expected output class. Default: image." }, "script_timeout_seconds": { "type": "integer", "required": false, "minimum": 600, "maximum": 1800, "description": "Override the per-subprocess timeout in seconds." } } }, "check_printability": { "description": "Run a structured 3D-printability analysis using Blender's object_print3d_utils addon. Read-only — no upload, no mesh mutation. Returns a task_id immediately.", "properties": { "file_url": { "type": "string", "description": "Public URL of the 3D model file.", "required": false }, "file_id": { "type": "string", "description": "AgentPMT file storage ID.", "required": false }, "checks": { "type": "array", "description": "Subset of checks to run. Default: all six.", "required": false, "items": { "type": "string", "enum": [ "solid", "intersect", "degenerate", "distort", "thick", "overhang" ] } }, "thickness_min_mm": { "type": "number", "description": "Wall-thickness threshold in mm. Default: 0.5.", "required": false, "minimum": 0.05, "maximum": 10 }, "overhang_angle_deg": { "type": "number", "description": "Overhang angle threshold in degrees. Default: 45.", "required": false, "minimum": 10, "maximum": 89 }, "distort_angle_deg": { "type": "number", "description": "Face-distortion angle threshold in degrees. Default: 45.", "required": false, "minimum": 5, "maximum": 89 } } }, "fix_printability": { "description": "Light-touch repair using Blender's object_print3d_utils clean operators. For mostly-clean inputs (CAD exports, few stray non-manifolds). Use voxel_remesh for structurally-broken inputs.", "properties": { "file_url": { "type": "string", "description": "Public URL of the 3D model file.", "required": false }, "file_id": { "type": "string", "description": "AgentPMT file storage ID.", "required": false }, "output_format": { "type": "string", "description": "Target format for the cleaned export.", "required": true, "enum": [ "stl", "glb", "obj", "ply" ] }, "auto_fix_non_manifold": { "type": "boolean", "description": "Run the addon's clean-non-manifold operator. Default: true.", "required": false }, "auto_fix_distorted": { "type": "boolean", "description": "Run the addon's clean-distorted operator. Default: true.", "required": false }, "checks": { "type": "array", "description": "Subset of checks to run. Default: all six.", "required": false, "items": { "type": "string", "enum": [ "solid", "intersect", "degenerate", "distort", "thick", "overhang" ] } }, "thickness_min_mm": { "type": "number", "description": "Wall-thickness threshold in mm. Default: 0.5.", "required": false, "minimum": 0.05, "maximum": 10 }, "overhang_angle_deg": { "type": "number", "description": "Overhang angle threshold in degrees. Default: 45.", "required": false, "minimum": 10, "maximum": 89 }, "distort_angle_deg": { "type": "number", "description": "Face-distortion angle threshold in degrees. Default: 45.", "required": false, "minimum": 5, "maximum": 89 } } }, "voxel_remesh": { "description": "Rebuild a model into a watertight manifold via OpenVDB voxel remesh. The right tool for structurally-broken inputs. Output is guaranteed manifold; surface detail smaller than the voxel size is smoothed away. Pre-flight rejects requests whose grid cell count exceeds 5,000,000 with error_code BLENDER_VOXEL_GRID_TOO_LARGE — the response message includes the minimum-safe voxel_size for the input, and the report context exposes bbox_x/y/z, voxel_size, cells, max_cells, and min_safe_voxel_size for runbooks.", "properties": { "file_url": { "type": "string", "description": "Public URL of the 3D model file.", "required": false }, "file_id": { "type": "string", "description": "AgentPMT file storage ID.", "required": false }, "output_format": { "type": "string", "description": "Target format for the remeshed export.", "required": true, "enum": [ "stl", "glb", "obj", "ply" ] }, "voxel_size": { "type": "number", "description": "Optional explicit voxel size in the same units as your model (typically mm). Smaller = finer detail and longer compute. Omit to auto-scale to ~1.3% of the longest bounding-box dimension.", "required": false, "minimum": 0.01, "maximum": 100 } } }, "slice_for_printing": { "description": "Slice a 3D model with PrusaSlicer and return G-code, parsed metadata, and a Blender-rendered printbed preview PNG. Returns a task_id immediately.", "properties": { "file_url": { "type": "string", "description": "Public URL of the 3D model file.", "required": false }, "file_id": { "type": "string", "description": "AgentPMT file storage ID.", "required": false }, "printer_profile": { "type": "string", "description": "Bundled PrusaSlicer profile name. Default: prusa_mk4_pla_020.", "required": false, "pattern": "^[a-z0-9_]+$" }, "layer_height_mm": { "type": "number", "description": "Override the slicer's layer height in mm.", "required": false, "minimum": 0.05, "maximum": 0.6 }, "infill_density_pct": { "type": "integer", "description": "Override infill density percent (0-100).", "required": false, "minimum": 0, "maximum": 100 }, "support_material": { "type": "boolean", "description": "Override the support-material toggle.", "required": false } } }, "get_task": { "description": "Check the status of a render task and retrieve download links when complete. Non-terminal responses include queue_position (0 when running, 1+ when queued), queue_eta_seconds, and queue_stats {queue_total_running, queue_total_queued, queue_total_capacity}. Caller-driven failures (GPU_RENDER_QUEUE_FULL, BLENDER_VOXEL_GRID_TOO_LARGE, BLENDER_RUN_SCRIPT_TOO_LARGE, GPU_RENDER_TASK_CANCELED, BLENDER_SLICER_PROFILE_INVALID) report at warning severity and are safe to retry with corrected inputs; subprocess / memory / timeout failures (GPU_RENDER_BLENDER_NONZERO_EXIT, GPU_RENDER_BLENDER_TIMEOUT, BLENDER_SUBPROCESS_MEMORY_LIMIT, GPU_RENDER_CONTAINER_RESTARTED, GPU_RENDER_UNEXPECTED_ERROR) report at error severity — retry once but escalate if it recurs.", "properties": { "task_id": { "type": "string", "description": "Task ID returned from a render action.", "required": true } } }, "list_tasks": { "description": "List render tasks for the current user, most recent first.", "properties": { "limit": { "type": "integer", "description": "Maximum tasks to return (1-100). Default: 20.", "required": false, "minimum": 1, "maximum": 100 } } }, "cancel_task": { "description": "Cancel a queued or running render task. Idempotent: cancelling an already-terminal task returns an error explaining that. Queued tasks transition immediately; running tasks transition once the SIGTERM grace window closes (≤30s). The task ends with status='failed' and error_code='GPU_RENDER_TASK_CANCELED'. Poll get_task to confirm the terminal state.", "properties": { "task_id": { "type": "string", "description": "Task ID returned from a render action.", "required": true } } } } } ``` ### Usage Instructions # Blender 3D Modeling Full access to Blender, the industry-standard 3D creation suite, running headless in the cloud. Render images and videos from 3D models, convert between file formats, and run custom Blender Python scripts. ## How It Works Render actions (`render_turntable`, `render_views`, `render_custom`, `run_script`, `check_printability`, `fix_printability`, `voxel_remesh`, `slice_for_printing`) run **asynchronously**. They return immediately with a `task_id` and `status: "processing"`. The render runs in the background. Use `get_task` to check progress and retrieve download links when complete. `convert_format` runs **synchronously** and returns the converted file immediately (typically under 5 seconds). The GPU runs one render at a time. When you submit while another job is in flight, your request joins a strict-FIFO queue and `get_task` returns three additional fields so you can plan around the wait: - `queue_position` — `0` while running, otherwise the 1-based slot in line. - `queue_eta_seconds` — best-guess seconds until the job is dequeued. - `queue_stats` — `{queue_total_running, queue_total_queued, queue_total_capacity}`. A submitted task that you no longer need can be cancelled with `cancel_task`. Cancellation works whether the task is still queued or actively rendering — see the action's docs for the contract. ## Quick Start For Agents Use this decision flow when choosing an action: 1. Need a spinning preview video of an existing model: call `render_turntable`. 2. Need front/top/side/3quarter still images of an existing model: call `render_views`. 3. Need one specific camera angle: call `render_custom`. 4. Need to change model file format, including exporting a native `.blend` file: call `convert_format`. 5. Need to know if a model is 3D-printable: call `check_printability`. 6. Need a light-touch cleaned export of a *mostly-clean* model (CAD output, hand-modeled mesh with a few stray non-manifolds): call `fix_printability`. 7. Need to repair a *structurally-broken* organic model (3D-modeled / sculpted shapes with overlapping geometry, photogrammetry exports, self-intersecting Boolean unions, inverted-normal regions, dense multi-shell tessellation): call `voxel_remesh`. 8. Need to slice a model and get print time / filament estimates: call `slice_for_printing`. 9. Need to create or modify geometry/materials/lighting with Blender Python, render custom media, or save several files: call `run_script`. 10. Need the result from an async action: call `get_task` with the returned `task_id`. 11. Need recent work history: call `list_tasks`. 12. Need to abort a queued or running task: call `cancel_task` with the `task_id`. For any action that accepts a model, provide exactly one model source: - `file_id` when the model is already in AgentPMT file storage. - `file_url` when the model is available at a public HTTPS URL. Do not invent file IDs. If the user only has a local path, first upload it through the platform file manager or ask the user to provide an accessible file URL. ## Async Task Pattern `render_turntable`, `render_views`, `render_custom`, `run_script`, `check_printability`, `fix_printability`, `voxel_remesh`, and `slice_for_printing` return a task immediately. Always follow this pattern: 1. Call the async action. 2. Save the returned `task_id`. 3. Poll `get_task` until `status` is `completed` or `failed`. 4. When completed, read the returned `outputs` array and give the user the `signed_url`, `file_id`, `filename`, and `size_bytes`. 5. If still processing, wait and poll again. Do not assume failure just because the first response has no file links. `convert_format` is the exception: it returns the converted file directly in the first response. If the queue is full it returns HTTP 429 with `error_code: "GPU_RENDER_QUEUE_FULL"` and a `Retry-After` hint; back off and retry. You may abort a task you submitted with `cancel_task` (queued or running). The task transitions to `status: "failed"` with `error_code: "GPU_RENDER_TASK_CANCELED"` once the SIGTERM grace window closes (≤30 seconds for a running render, immediate for a queued one). ## Queue and Capacity - The GPU serves one render at a time. Submissions queue strictly in arrival order — there is **no per-budget reordering** or fair-share. Visibility (`queue_position`, `queue_eta_seconds`) is the fairness mechanism. - Maximum queue depth is **50**. A submission past that limit returns HTTP 429 with body `{"success": false, "output": {"error": "...", "error_code": "GPU_RENDER_QUEUE_FULL"}}` and a `Retry-After` header. Wait the suggested interval and retry. - Container restarts: if a job was processing when the container restarted, `get_task` returns `status: "failed"` with `error_code: "GPU_RENDER_CONTAINER_RESTARTED"`. Resubmit the request. ## Memory Limits Each render runs under a kernel-enforced memory cap and an additional container-level backstop: - Per-subprocess: **12 GiB**. A render that allocates beyond this fails fast with `error_code: "BLENDER_SUBPROCESS_MEMORY_LIMIT"`. - Per-container: **14 GiB hard cap** (catastrophic backstop only — the per-subprocess cap fires first). - `voxel_remesh` rejects requests whose grid cell count exceeds **5,000,000** with `error_code: "BLENDER_VOXEL_GRID_TOO_LARGE"`. The error message includes the minimum-safe `voxel_size`. For a 150 mm bbox the minimum-safe value is ≈ 0.31 mm; smaller voxels make the grid blow up cubically. - `run_script` rejects payloads larger than **64 KiB** with `error_code: "BLENDER_RUN_SCRIPT_TOO_LARGE"`. Reach for `convert_format` or `render_views` if the script is just orchestrating a few API calls. ## Input And Output Rules Supported model inputs for standard render/convert actions are BLEND, GLB, GLTF, FBX, OBJ, STL, DAE, and PLY. Supported `convert_format` outputs are `blend`, `glb`, `fbx`, `obj`, `stl`, `dae`, and `ply`. `fix_printability` re-exports the cleaned mesh and supports a smaller subset (`stl`, `glb`, `obj`, `ply`) — formats designed for 3D-printing pipelines. `slice_for_printing` accepts the same model inputs as the renderers and returns a `.gcode` file plus a Blender-rendered "model on the printbed" preview PNG with the print-time and filament numbers overlaid. For `run_script`, any files saved directly inside `OUTPUT_DIR` are uploaded automatically. Use `output_type` to tell the tool what files to return: - `image` returns image outputs such as `.png`, `.jpg`, `.jpeg`, and `.webp`. - `video` returns video outputs such as `.mp4`, `.mov`, and `.webm`. - `model` returns model outputs such as `.blend`, `.glb`, `.gltf`, `.fbx`, `.obj`, `.stl`, `.dae`, `.ply`, and `.usdz`. - `all` returns every regular file written to `OUTPUT_DIR`. If `output_type` does not match the files your script writes, the task can complete with skipped files. For example, set `output_type: "model"` when saving a `.blend` file and `output_type: "video"` when writing an `.mp4`. Blender project files are returned as generic binary downloads for broad client compatibility. They still use the `.blend` filename extension. ## Render Quality And Framing The standard render actions automatically center and scale models for consistent framing. Leave `camera_distance` unset unless the user explicitly asks for a manual distance. Use these defaults for reliable results: - Product-style previews: `lighting_preset: "product"`, `background_color: "ffffff"`, `fit_margin: 1.35` to `1.6`, `camera_lens_mm: 28` to `35`. - General studio previews: `lighting_preset: "studio"`, default background, default framing. - Fast draft previews: out-of-the-box defaults are tuned for this — `resolution: "720p"`, `samples: 8`, with 12-24 turntable frames for a quick spin. - Higher quality stills: opt in with `resolution: "1080p"` or `2k` and `samples: 32` to `128`. Hero marketing renders may use `samples: 128+`. For turntables, slower and smoother videos use more frames and longer duration. A useful default is 24 frames over 6 seconds for a quick review, or 72-96 frames over 6-8 seconds for smoother presentation. The service renders with Cycles on an NVIDIA L4 GPU in production (Cloud Run); local dev falls back to CPU when no GPU is attached. Very large `samples` × `resolution` × `frames` combinations will still hit the per-action timeout cap even on GPU; choose the fast defaults for previews and only opt in to higher quality when the output justifies the wait. For very heavy STL imports, `decimate_ratio` lowers polygon count before rendering and is the right control to reach for instead of dropping resolution. ## Printability QA `check_printability` and `fix_printability` use Blender's `object_print3d_utils` addon to surface the geometric problems an FFF/FDM printer slicer cannot recover from. The single contract for `summary.is_printable`: > A model is printable iff it has no non-manifold edges, no non-manifold vertices, no self-intersecting faces, and no degenerate faces or edges. Distorted faces, thin walls (below `thickness_min_mm`), and steep overhangs (above `overhang_angle_deg`) are all reported as `warning_count` rather than blockers — they are slicer-tunable and printer-dependent (an SLA printer can print steeper overhangs than an FDM printer; supports usually rescue most overhangs anyway). ### Choosing between `fix_printability` and `voxel_remesh` Both repair actions produce a printable export. They use different techniques and have different trade-offs — pick based on the *severity* of the input's issues: - **`fix_printability`** runs Blender's lightweight clean operators (clean-non-manifold, clean-distorted). Preserves fine surface detail. The right tool when `check_printability` reports a small number of issues (dozens to a few hundred), typically from CAD exports or hand-modeled meshes with a few stray non-manifolds. If the input is structurally broken, this action's clean operators can actually make the metrics worse. - **`voxel_remesh`** rebuilds the entire mesh from a uniform voxel grid via OpenVDB. Guaranteed manifold output. Loses sub-voxel surface detail (smooths fine grooves, embossed text smaller than the voxel size). The right tool for organic 3D-modeled / sculpted shapes, photogrammetry exports, self-intersecting Boolean unions, inverted-normal regions, and dense multi-shell tessellation problems. Typically the only thing that fixes Meshy / sculpting / photogrammetry output. The auto-scaled voxel size keeps tentacle-class silhouette features intact on a normal-sized print. A reasonable default workflow: call `check_printability` first; if `summary.issue_count` is in the dozens or low hundreds, try `fix_printability`. If it's in the thousands, go straight to `voxel_remesh`. ## Slicing `slice_for_printing` ships one bundled printer profile, `prusa_mk4_pla_020`, an Original Prusa MK4 with the 0.4mm nozzle, Generic PLA filament, and the 0.20mm QUALITY print profile (250 × 210 mm bed, 0.2mm layers, 15% infill, no supports). The override fields (`layer_height_mm`, `infill_density_pct`, `support_material`) apply on top of that profile per call. The action returns: - `model.gcode` — the actual G-code that a printer can stream from. - `slice_preview.png` — a Blender-rendered image showing the model resting on a printbed-sized plane in roughly PrusaSlicer's default 3D-view orientation, with print-time / filament / layer / profile-name lines overlaid in the bottom-right corner. This is a wayfinding visual, not a hero render. - `metadata` — the parsed time / filament / layer-count fields lifted directly out of the slicer's gcode comment block. ## Security And Script Safety Blender starts with Python auto-execution disabled when loading files, including user-provided `.blend` inputs. `run_script` executes the script in Blender, so keep scripts scoped to the requested task. Save only intended outputs into `OUTPUT_DIR`. Do not assume application source files, credentials, or other task working directories are available. ## Actions ### render_turntable Generate a spinning turntable video of a 3D model with professional lighting. Returns a task_id immediately. **Required fields:** - `file_url` or `file_id` — the 3D model (BLEND, GLB, FBX, OBJ, STL, DAE, PLY) **Optional fields:** - `frames` (int, 12-120, default 72) — number of animation frames - `duration_seconds` (float, 1-30, default 6) — video length in seconds - `resolution` (string, default "720p") — 720p, 1080p, 2k, 4k, or custom WxH. Raise to 1080p or higher for hero output; the default is tuned for fast previews. - `samples` (int, 1-512, default 8) — render quality (higher = better but slower). Raise to 32-64 for hero stills, 128+ for marketing renders. - `background_color` (hex string without #, default "1a1a1a") — background color - `lighting_preset` (string, default "studio") — studio, product, outdoor, dramatic - `elevation` (float, -45 to 90, default 25) — camera elevation angle in degrees - `camera_distance` (float, optional) — explicit camera distance; omit for automatic full-object framing - `camera_lens_mm` (float, 10-120, default 35) — focal length in mm; lower is wider - `fit_margin` (float, 1-3, default 1.25) — auto-framing padding; higher leaves more space around the model - `decimate_ratio` (float, 0.05-1.0, optional) — polygon-reduction ratio applied before rendering. 0.5 keeps half the faces, 0.2 keeps a fifth, omit (or 1.0) for full fidelity. Use for very heavy STL imports of organic / 3D-print geometry where preview-quality renders are acceptable. **Example — basic turntable:** ```json {"action": "render_turntable", "file_url": "https://example.com/model.glb"} ``` --- ### render_views Render the model from multiple preset camera angles and return individual images. Returns a task_id immediately. **Required fields:** - `file_url` or `file_id` **Optional fields:** - `views` (array of strings) — front, back, left, right, top, bottom, 3quarter. Default: front, back, left, right, top, 3quarter. - `resolution`, `samples`, `background_color`, `lighting_preset` — same as render_turntable - `camera_distance`, `camera_lens_mm`, `fit_margin`, `decimate_ratio` — same as render_turntable --- ### render_custom Render with a custom camera position, target, and field of view. Returns a task_id immediately. **Required fields:** - `file_url` or `file_id` **Optional fields:** - `camera_position` (array [x, y, z], default [3, -3, 2.5]) - `look_at` (array [x, y, z], default [0, 0, 0]) - `fov` (float, 10-120, default 50) - `resolution`, `samples`, `background_color`, `lighting_preset` --- ### convert_format Convert a 3D model between file formats. Runs **synchronously**. **Required fields:** - `file_url` or `file_id` - `output_format` (string) — blend, glb, fbx, obj, stl, dae, ply **Optional fields:** - `apply_transforms` (boolean, default true) — ignored for `blend` output. If the queue is full, returns HTTP 429 with `error_code: "GPU_RENDER_QUEUE_FULL"` and a `Retry-After` header. --- ### check_printability Run a structured 3D-printability analysis using `object_print3d_utils`. Read-only — no upload, no mesh mutation. **Required:** `file_url` or `file_id`. **Optional:** `checks` (subset of solid/intersect/degenerate/distort/thick/overhang), `thickness_min_mm`, `overhang_angle_deg`, `distort_angle_deg`. --- ### fix_printability Light-touch repair using the addon's clean operators. Preserves fine surface detail. Use `voxel_remesh` for structurally-broken inputs. **Required:** `file_url` or `file_id`, `output_format` (`stl`, `glb`, `obj`, `ply`). **Optional:** `auto_fix_non_manifold` (default true), `auto_fix_distorted` (default true), `checks`, `thickness_min_mm`, `overhang_angle_deg`, `distort_angle_deg`. --- ### voxel_remesh Rebuild a model into a watertight manifold via OpenVDB voxel remesh. The right tool for structurally-broken inputs. Output is guaranteed manifold; surface detail smaller than the voxel size is smoothed away. **Required:** `file_url` or `file_id`, `output_format` (`stl`, `glb`, `obj`, `ply`). **Optional:** `voxel_size` (float, 0.01–100.0; omit to auto-scale to ~1.3% of the longest bounding-box dimension). Pre-flight rejects requests whose grid cell count exceeds 5,000,000 with `error_code: "BLENDER_VOXEL_GRID_TOO_LARGE"` — the error message includes the minimum-safe `voxel_size` for the input. --- ### slice_for_printing Slice a model with PrusaSlicer's headless CLI against a bundled printer profile. Returns the gcode, a Blender-rendered "model on the printbed" preview PNG, and parsed metadata. **Required:** `file_url` or `file_id`. **Optional:** `printer_profile` (default `prusa_mk4_pla_020`), `layer_height_mm`, `infill_density_pct`, `support_material`. --- ### run_script Execute a custom Blender Python script. Returns a task_id immediately. **Required:** `script` (string). **Optional:** `file_url` or `file_id` (sets MODEL_PATH), `output_type` (image/video/model/all, default image), `script_timeout_seconds` (600-1800). **Available in the script:** `bpy`, `MODEL_PATH`, `OUTPUT_DIR`. Save output files to `OUTPUT_DIR` for automatic upload. Script payloads are limited to 64 KiB; oversize requests fail with `error_code: "BLENDER_RUN_SCRIPT_TOO_LARGE"`. --- ### get_task Check the status of a render task and retrieve download links when complete. **Required:** `task_id`. Non-terminal responses include `queue_position` (0 when running, 1+ when queued), `queue_eta_seconds` (best-guess wait), and `queue_stats` (running/queued/capacity counters). All three are omitted on terminal records. **Response when processing:** ```json {"action": "get_task", "task_id": "...", "status": "processing", "progress": 45, "queue_position": 0, "queue_eta_seconds": 60, "queue_stats": {"queue_total_running": 1, "queue_total_queued": 2, "queue_total_capacity": 50}} ``` **Response when failed (cancelled):** ```json {"action": "get_task", "task_id": "...", "status": "failed", "error": "Task canceled by caller.", "error_code": "GPU_RENDER_TASK_CANCELED"} ``` **Response when failed (container restart):** ```json {"action": "get_task", "task_id": "...", "status": "failed", "error": "Container restarted before this task could complete.", "error_code": "GPU_RENDER_CONTAINER_RESTARTED"} ``` --- ### cancel_task Cancel a queued or running task. Idempotent. **Required:** `task_id`. **Response (success):** ```json {"action": "cancel_task", "task_id": "...", "cancel_outcome": "queued_or_running_canceled"} ``` The task itself transitions to `status: "failed"` with `error_code: "GPU_RENDER_TASK_CANCELED"` once the SIGTERM grace window closes (≤30 seconds for a running render, immediate for a queued one). Poll `get_task` to confirm the terminal state. --- ### list_tasks List all render tasks for the current user, most recent first. **Optional:** `limit` (1-100, default 20). ## Lighting Presets | Preset | Description | Best For | |--------|-------------|----------| | studio | 3-point lighting (key, fill, rim). Neutral white. | Product shots, portfolio | | product | Large soft overhead with bottom fill. | E-commerce, catalogs | | outdoor | Sun lamp with ambient sky fill. | Architectural, outdoor | | dramatic | Single hard spotlight from the side. | Character models, cinematic | ## Notes - Models are automatically centered and scaled for consistent framing across render actions. - Blender runs with Python auto-execution disabled when loading files. - Turntable videos are rendered as PNG frames then stitched to H.264 MP4 via ffmpeg. - Cycles is the default render engine; runs on GPU when available, falls back to CPU automatically. - The `object_print3d_utils` addon is enabled at runtime for `check_printability` / `fix_printability`. - `voxel_remesh` uses Blender's OpenVDB-backed voxel remesher. - `slice_for_printing` ships PrusaSlicer 2.x with one bundled MK4 PLA profile. - Output files are stored for 7 days via signed URLs. - Each Blender subprocess runs under an auto-scaled timeout — floor 10 minutes (600s), capped at 30 minutes (1800s). - The render queue is strict-FIFO with capacity 50; a full queue returns HTTP 429 with `error_code: "GPU_RENDER_QUEUE_FULL"` and a `Retry-After` header. - Per-subprocess memory cap is 12 GiB; per-container backstop is 14 GiB. ### Frequently Asked Questions No linked FAQs are currently available. ### Dependencies This product has no public dependency products.