org.r3js/r3

up checked 2026-11-11T11:37:24.521Z

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Publisher-provided title

R3

Publisher-provided description

Build 3D web apps: physics, audio, music, Blender import. Live edits, undo, versions, publishing.

Summary by lookupd

Lets an agent create, edit, publish and version 3D web projects, including scene objects, code, physics and releases.

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http r3 https://mcp.r3js.org/mcp

Codex, remote (streamable-http)

codex mcp add r3 --url https://mcp.r3js.org/mcp

Cursor, remote (streamable-http) → .cursor/mcp.json

{
  "mcpServers": {
    "r3": {
      "url": "https://mcp.r3js.org/mcp"
    }
  }
}

Other clients: docs. Or tell your agent: Set up lookupd for me: read https://lookupd.com/agent.md and follow it.

Tools (showing 30 of 80)

Publisher-provided text

• r3_docs_list Every R3 document this server can give you, IN READING ORDER, with what each one covers and how big it is. R3's documentation begins here: no model has R3 in it
• r3_docs_read Return one R3 document in full, or one API symbol. Paths come from r3_docs_list: r3_docs_read("CODE_PATTERNS.md") how a Code component is written (re
• r3_whoami Report the R3 account you act for, how you are connected (an agent key, or an app connection made with Sign in with R3), what you are allowed to do, the account
• r3_project_create Create a new R3 project and save it to the user's account. Produces a complete, openable project — scene, world, camera, renderer, lighting, audio listener, mus
• r3_project_list List the projects this R3 account can work on — its own and its teams' — last updated first, with the projectId every other project tool takes. It is how a proj
• r3_project_load List the components in an existing R3 project — what it contains and, for each one, its entityRef: the name code addresses it by (`this['mesh_cube_1']`). Read t
• r3_preview_create Create a shareable preview link for a saved R3 project, so a person can open it in a browser and see it running. The link is valid for 7 days and does NOT make
• r3_preview_remove Remove the preview link of an R3 project: every preview link to it stops working at once (teammates' too). Only when the user asked for it, or when the preview
• r3_publish_live Publish an R3 project live: makes a RELEASE (a frozen copy) of the project as it is now and makes it the one its public live URL shows, for anyone. Only when th
• r3_unpublish_live Take a live R3 project offline: its public live URL stops working at once, and the live-project slot it used on the plan is free again. Only when the user asked
• r3_release_list List the releases of an R3 project, newest first: number, date, who made it, note, size, which one is LIVE (what the public URL shows), pinned, and releases in
• r3_release_rollback Make an earlier release of a live R3 project the one its public URL shows again (rollback, or forward again). Only when the user asked for it. The project must
• r3_publish_settings_read Read the publish settings of one of the user's own R3 projects in this environment — what the app's Deploy → Settings shows: Works on (keyboard / touch / both /
• r3_publish_settings_set Change publish settings of one of the user's own R3 projects in this environment — the app's Deploy → Settings. Only the settings named change (the rest stay as
• r3_project_rename Rename a project: the name shown in the user's project list, the editor's title and the live page. The same change as clicking the title in the R3 editor, kept
• r3_project_remix Remix a project: copy the published release of a project into a NEW private project in this account. The source is a Community or live project whose author allo
• r3_project_delete Permanently delete an R3 project. With the project:delete:created right (on by default), only a project YOU created (this agent key or app connection) — use it
• r3_factory_list List the R3 factories available to r3_factory_run, with each one's options, types and defaults. A factory builds a complete, correctly-wired object — a cube is
• r3_factory_run Add an object to an existing R3 project — a cube, sphere, terrain, lighting, a physics body, and so on. Each factory builds a complete, correctly-wired object (
• r3_code_write Add or replace a Code component: JavaScript a project runs. It runs on ONE event you choose (`event`): RENDER_BEFORE (default) every frame, for movement (held k
• r3_code_read Read back what a Code component actually contains — its full JavaScript source and the event it runs on. r3_code_write reports what it wrote; this reports what
• r3_help_write Set the instructions that ship WITH a project — controls, what to press, what it does. R3 renders them in a modal behind a floating "?" button and the H key, in
• r3_component_set Set one or more properties on a component that already exists in a project — a material's roughness, a mesh's position, which material a mesh uses. Kept at once
• r3_component_read Read back what components actually hold — a material's colour and roughness, a mesh's position, which material it uses. r3_project_load gives you the names; thi
• r3_terrain_height How high the ground of a heightfield terrain is at the world (x, z) positions you ask, exactly as physics and the drawn terrain have it, plus the terrain's lowe
• r3_component_bounds The size and place of meshes and imported models, in R3 units (metres): the world-space box around each (min, max, size, centre), the mesh's scale, rotation and
• r3_component_add Add one component of ANY registered type — a collider, a rigid body, a joint, a light, a material, a geometry … — to a saved R3 project, with its values and ref
• r3_editor_open Open a project in the R3 editor the user has open in their browser (their most recently used R3 tab) and focus it, so they see it. A project already open there
• r3_editor_inspect Read what components hold RIGHT NOW in an R3 tab that has the project open: runtime values included — a moving body's position while the project runs. Use it to
• r3_editor_set The same tool as r3_component_set (this is its older name): change properties of a component, kept at once in the project's live copy: every R3 tab with the pro

Details

• Version: 3.183.0
• Transports: streamable-http
• Uptime (7 days): 100%
• Median latency: 1877 ms
• First indexed: 2026-11-01T10:08:10.304Z
• Last seen in registry: 2026-11-11T00:17:37.666Z
• Website: https://r3js.org

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