Add the extension repository https://render.janction.jp/extensions/index.json under Edit → Preferences → Get Extensions → Repositories (or install the zip from GitHub), press "Get a free key" in the JANCTION Render panel under Properties → Render, and use Preview (up to 4 frames of the frame range as one sheet, in seconds), Estimate (how long the final render takes and whether it fits the free GPU time left: the welcome credit while it lasts, then up to 2 preview GPU-minutes a day) and Final (the frame range as an MP4 or PNG frames, saved in a janction_render folder next to the .blend). The add-on uploads a copy of the file plus the images, fonts and caches it references with relative paths; Blender keeps working while the job runs on an NVIDIA RTX PRO 6000 in the JANCTION data center. AI agents connect at https://render.janction.jp/mcp (remote MCP with OAuth; connecting creates a free key).
Updated 2026-11-12
What it does Your own .blend, bpy script or 3D file (glTF/GLB, FBX, USD, OBJ...) rendered to images or video on a cloud NVIDIA GPU, from an AI app, the terminal or the browser. The first preview needs no payment.
What it does not do It does not speed up the Blender viewport on your machine, does not take non-Blender video, simulations or general GPU jobs, and an AI that is not connected cannot render on its own.
Try your own file for freeBuild it with an AI and try
Browser only; no connector or CLI needed. A 100 JPY welcome credit for a new key (14 days, no card; one per network every 30 days, further keys on the same network share what is left), and 400 JPY more for saving a card that is not charged (once per card); after that, previews stay free up to 2 GPU-minutes a day and finals cost 0.1 JPY per GPU-second.
https://render.janction.jp/extensions/index.json. JANCTION Render then appears in the extension list; press Install. Updates arrive through the same repository.janction_render-0.1.13.zip (source on GitHub; python scripts/build_blender_addon.py builds it) and use Install from Disk in the same drop-down.| button | what happens | GPU time |
|---|---|---|
| Preview | Up to 4 frames spread over the frame range (the current frame is always one of them), rendered at up to 1280x720 with at most 32 samples and tiled into one sheet, shown in an Image Editor and saved as preview_<date>.png | a few seconds (measured) |
| Estimate | Asks the service how long the final render would take and whether it fits the free GPU time left (the welcome credit while it lasts, then up to 2 preview GPU-minutes a day) | none |
| Final | The scene frame range at the scene resolution (capped at 1080p) with the scene's Cycles samples (capped at 128, or your own number), as one MP4 or as PNG frames in final_<date>/. Asks for confirmation first | what Estimate said |
Options in the panel: environment preset (studio / sunset / overcast / night replace the world with a bundled HDRI; "Scene world" keeps yours), the Blender version on the worker (5.0 or 5.2), output (MP4 or PNG frames) and samples. Cancel stops the job on the service. The panel shows the free GPU time left (the welcome credit while it lasts, then up to 2 preview GPU-minutes a day).
//textures/wood.png), under the same relative name. Packed images need nothing.Files render inside a disposable container with no network; inputs and results are deleted 24 hours after last use (7 days, normally, for keys that have paid 500 JPY or more in total) and are not used for training (security). Identical bytes are not uploaded twice.
Pricing (since 2026-10-08): Each new key gets 100 JPY of GPU time free with no card (1,000 GPU-seconds, 14 days) for previews and finals, and 400 JPY more once a card is saved on a Stripe page that charges nothing (once per card): up to 500 JPY in all. After it is used up or expires, previews are free up to 2 GPU-minutes per key per day and final renders are paid from prepaid credit at 0.1 JPY per GPU-second. Top-ups (paid) start at 100 JPY. The first top-up during the 14-day welcome period counts 1.5x, with the bonus capped at 500 JPY (100 JPY buys 150 JPY of credit). Top-ups of 2,000 JPY or more get 10 to 20% extra (not combined with the first-top-up bonus; the larger one applies). Top-up bonuses are separate from the welcome credit and the card-saving credit. Payment is on a Stripe Checkout page. One full welcome credit per network every 30 days; further keys from the same network use what is left of that network's credit. A job without enough credit gets HTTP 402 payment_required with a checkout_url. Final renders go up to 3,000 frames per instruction (automatically split internally under one job id), 1080p (1920x1080) on free time and up to 4K (3840x2160) on prepaid credit. The free preview time resets at 00:00 UTC (09:00 JST). No sign-up: connecting creates a key. Inputs and results are deleted 24 hours after last use (normally 7 days for keys that have paid 500 JPY or more in total) and never used for training.
The add-on is for people working inside Blender. AI agents (Claude, ChatGPT, Codex, Claude Code, Cursor) use the same service through the MCP server at https://render.janction.jp/mcp; both can share one key, and the quota belongs to the key. An agent can also send the .blend you saved: the stdio package collects the referenced textures the same way.
No. It uses Blender's bundled Python and plain HTTPS; one click creates a key. Each new key starts with a welcome credit of up to 500 JPY (14 days); after that, previews stay free up to 2 GPU-minutes a day and finals cost 0.1 JPY per GPU-second. Rendering happens on an NVIDIA RTX PRO 6000 in the JANCTION data center.
The extension needs Blender 4.2 or newer on your side. On the worker the file is opened by Blender 5.0 or 5.2 (your choice in the panel); a file saved by a newer Blender may need 5.2.
The image was not sent: it has an absolute path, sits above the .blend folder, or is an image sequence. Make paths relative (File → External Data → Make Paths Relative) or pack the images; the Info editor lists what was skipped.
The copy renders in a container with no network access, is deleted 24 hours after last use (7 days, normally, for keys that have paid 500 JPY or more in total), and is never used for training. Details on the security page.