What it is. JANCTION Render is a Model Context Protocol server whose tools render Blender. It complements Blender MCP servers that edit a scene inside a running Blender: those need Blender and a GPU on your machine; this one needs neither. Use both together: build the scene with a local Blender MCP or a bpy script, render it here.
Two transports.
https://render.janction.jp/mcp. OAuth 2.1 with dynamic client registration; pressing Connect opens a page
that creates a free API key. Scenes are sent as scene_script (bpy code as text), scene_url (https link to a
.blend or .py) or scene_id; results are an inline image plus links valid 24 hours. For Claude.ai, ChatGPT, Claude Code, Codex, Cursor.uvx --from janction-render janction-render-mcp. Reads local files and saves results next to your project.
For Claude Code, Codex and other terminal agents.Tools. scene_info, render_preview, render_estimate, render_final,
render_status, render_download, render_cancel, billing, render_info.
Read-only tools carry readOnlyHint; only render_cancel is destructive.
Listings. Official MCP Registry io.github.JasmyLab-JANCTION/janction-render · PyPI janction-render ·
GitHub · llms.txt.
| from | how |
|---|---|
| Claude.ai | Settings → Connectors → Add custom connector → https://render.janction.jp/mcp |
| ChatGPT | Settings → Connectors → Advanced → Developer mode → Create → https://render.janction.jp/mcp (OAuth) |
| Claude Code | claude mcp add --transport http janction-render https://render.janction.jp/mcp |
| Codex | codex mcp add janction-render --url https://render.janction.jp/mcp |
| Cursor and other MCP clients | Streamable HTTP at https://render.janction.jp/mcp; OAuth or Authorization: Bearer <api key> |
JANCTION Render v0.2.1 · JasmyLab Inc.