MCP-сервер R3

• Имя в реестреorg.r3js/r3подтверждён в реестре MCP

Имя в реестре лежит в пространстве r3js.org. Реестр пускает в такое пространство только того, кто доказал владение доменом через DNS или HTTP.

• Состояниеотвечаетпроверено 2026-10-25
• Инструменты61
• Сервер называет себяr3
• Версия сервера3.102.0
• Версия протокола2025-06-18

2026-10-25 сервер ответил на initialize и tools/list без входа. Первый ответ за 802 мс.

• Делают ли инструменты работу продукта, ещё не проверено.
• Проверок пока 3 из 7, нужных, чтобы судить о надёжности.

Вывод сделан правилами по замерам выше. Вероятный первый вызов выбрала модель по списку инструментов: прочитайте описание, прежде чем на него полагаться.

• Оценка INITE MCPчерез неделюдля оценки нужно 7 ежедневных проверок, пока 3
• Отвечалидёт замерпроверок пока 3, долю покажем после 7
• Медиана первого ответа795 мс
• Место в контексте агента≈ 21 519 токеновописания всех инструментов (61), они занимают контекст агента на каждом ходу
• Описания инструментовA · 100 из 100
• Типизированные ответы59 из 61 инструментовобъявлен outputSchema: ответ приходит с типами и читается сразу

• Все инструменты проходят все шесть проверок.

Программа проверяет сервер раз в день: initialize и tools/list, без модели. Токены - это длина описаний из расчёта примерно четыре символа на токен. Оценка - среднее шести проверок имени, описания, схемы и аннотаций каждого инструмента. Она говорит, насколько понятно описаны инструменты, а не о том, работают ли они. Оценка складывается только из замеренного: отвечает ли сервер (25%), делает ли работу продукта (25%), описания (20%), контекст (10%), использование (10%) и насколько просто подключиться (10%). Незамеренная часть не учитывается, а скрытая инструкция ограничивает оценку 40 баллами. Состояние MCP-серверов вендоров: методика и цифры →

• 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 its pretraining, and code written from tool descriptions alone saves cleanly and…

• 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 (reading order 1) r3_docs_read("PHYSICS_USAGE.md") colliders, rigid bodies, joints…

• 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's plan (its name and how many live projects it allows and uses: going live…

• 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 and music transport — ready for components to be added. Pass `template` for a…

• 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 project the user names ("my slot machine") rather than giving an id is found…

• 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 this before writing any code for a project, and after any tool call whose…

• 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 the project public; making a new one is free. It is how the user sees what you…

• 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 link is what blocks an r3_project_delete the user asked for: a preview link is…

• 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 the user asked for it. Changing the project does NOT change the live site…

• 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 for it. Other people open a live project, so one that blocks an…

• 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 the trash (restorable for 7 days). Also says whether the project has saved…

• 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 be live; this never uses a plan slot. A release in the trash or one marked…

• 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 / not tested), the SEO title and description that search engines and link…

• 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 they are). Only when the user asked for it, or approved the text: these…

• 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 at once in the project's live copy (every open R3 tab shows it). The public…

• 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 to clean up your own abandoned attempts; the user's own projects and other…

• 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 a mesh plus geometry plus material plus colour, already connected. Call this…

• 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 (mesh + geometry + material + colour, already connected), so you never assemble…

• r3_code_write

  Add or replace a Code component: JavaScript that makes a project DO something. It runs on ONE event you choose (`event`): RENDER_BEFORE (default) every frame, for movement (held keys: this.keysPressed); KEY_DOWN / KEY_UP once per press /…

• 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 is there. Use it before replacing a script, so an edit builds on the real…

• 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 the editor and in the live portal alike, so whoever opens your preview link…

• 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 in the project's live copy: every R3 tab with the project open shows it now…

• 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; this gives you the values behind them. Pass SEVERAL entityRefs in one call…

• 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 lowest and highest point, centre, size and footprint. Use it to place something ON…

• 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 parents applied. Name a Mesh, or the root Empty of a Blender model…

• 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 references set before it is created. Kept at once in the project's live copy…

• 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 is just focused (never reloaded). It is how the user gets to see the project…

• 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 debug live behaviour. It needs a tab with the project open (r3_editor_open…

• 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 project open shows it now, no editor needed and nothing to save. Name the…

• r3_editor_code

  The same tool as r3_code_write (this is its older name): replace a Code component's code, kept at once in the project's live copy: every R3 tab with the project open runs the new code now, no editor needed and nothing to save. Name it…

• r3_editor_create

  The same tool as r3_factory_run (this is its older name): add an object — a cube, sphere, light, physics body … — kept at once in the project's live copy: every R3 tab with the project open shows it now, no editor needed and nothing to…

• r3_editor_add_component

  The same tool as r3_component_add (this is its older name): add one component of ANY registered type — a collider, a rigid body, a joint, a light, a material, a geometry … — with its values and references set before it is created, kept at…

• r3_editor_delete

  Delete components from the project the user has OPEN in their R3 editor, exactly as the editor's delete dialog asks it — in TWO calls. First call WITHOUT `confirm`: it returns the plan and changes nothing — the selected components, what…

• r3_editor_undo

  Undo the last change YOU (this agent key or app connection) made to a project: everything one of your tool calls changed is undone together, and the user sees it at once in any R3 tab that has the project open. Use it when your own change…

• r3_release_restore

  Put a project's working copy back the way one of its releases (saved versions) had it: components added since are removed, removed ones come back, values and scripts go back to that version (each script as a new version on top of the…

• r3_editor_run

  Press the Run buttons of the user's open R3 editor: start physics, code, audio and music (all of them, or the ones named in `systems`), exactly as the user's own click does — a paused simulation resumes. Use it to TEST what you built: run…

• r3_editor_stop

  Press the Stop buttons of the user's open R3 editor: stop physics, code, audio and music (all of them, or the ones named in `systems`), exactly as the user's own click does. Stopping physics puts every body back where it was placed…

• r3_editor_capture

  Capture the canvas of a project open in the user's R3 editor — the scene as it looks NOW, running physics included — and LOOK at it: the answer is an image. Call it after a visual change (r3_editor_set, r3_editor_create, r3_editor_code …)…

• r3_editor_set_preview_image

  Use what the project's camera shows NOW, in the user's open R3 editor, as the project's share image: the picture its live page, link previews (social cards) and the showcase show, used when the project is next published (r3_publish_live…

• r3_blender_list

  List the Blender models this R3 account has uploaded — one per .blend file name, the current version of each — with what it will produce: how many Blender objects land in the scene, how many meshes and materials, its screenshot, and any…

• r3_blender_import

  Add a Blender model the account has uploaded (its current version) to an existing R3 project — the whole model, or only the meshes you name. Every Blender mesh object becomes an R3 Mesh keeping its own position, rotation, scale and…

• r3_blender_update

  A re-uploaded Blender model is always its latest version; the user's projects keep the meshes they have until asked. This tool asks and answers that one question: choice update_projects without reportId shows which projects and entity…

• r3_blender_copies

  Does this project hold the same Blender model more than once (two whole imports side by side)? Answers "N copies of <model>: … Keep one?" with each copy (its Entity, entityRef, part count) and its delete plan. It changes nothing: which…

• r3_blender_upload

  Save a .blend you made or changed (in Blender, through a Blender MCP) as the newest version of one of the user's Blender models: the model is named by the file name, so "monster-truck.blend" adds a version to the user's monster-truck…

• r3_blender_download

  Get a .blend of one of the user's OWN Blender models (from r3_blender_list) to open in Blender: the current version, or the version fileId names. Answers a one-time download ticket (5 minutes) and the download endpoint (URL, method…

• r3_blender_draft_push

  While you build a model in Blender for the user, push an APPLIED copy of your working .blend after each step (body done, wheels done, materials done): the user's Blender page shows it as a 3D preview they can orbit. A draft is not a saved…

• r3_image_list

  List the images this R3 account owns, with the URL to use for each one. That URL is exactly what R3ComponentTexture.url takes, so this is how you find the account's own artwork — a wood grain, a logo, a skybox — and then point a texture…

• r3_audio_list

  List the audio files this R3 account owns, with the URL to use for each one. That URL is exactly what R3ComponentAudio.url takes, so this is how you find a sound the account already has — a footstep, a drum hit, a music bed — and then…

• r3_image_create

  Store a small image YOU generated in this R3 account's image library and get back the URL for it — the value R3ComponentTexture.url takes. This is how you make a checkerboard, a gradient, a test grid or a noise tile and then actually put…

• r3_texture_create

  Make a matching, seamlessly tiling texture SET for a material: a colour map, a normal map and a packed ambient-occlusion / roughness / metalness map, rendered by R3 from a procedural recipe (seeded noise, stones, bricks …). Nothing is…

• r3_texture_read

  Read one texture set: its name, size, tile size, the three map urls, the numbers its render measured, the sets it was edited from, and the full RECIPE (the editable source). The account's own sets, or anyone's public one. To change a set…

• r3_texture_update

  Change a texture set the account owns: its look (controls: seed, scale, colours, contrast, bumpiness, roughness {min, max}, size, tileWorldSize, height, applied to the set's own recipe; `scale` multiplies its pattern, so 2 is twice as…

• r3_texture_apply

  Wire a texture set to a material in a project: the colour map to `map`, the normal map to `normalMap`, the ambient-occlusion / roughness / metalness map to `aoMap` + `roughnessMap` (+ `metalnessMap` when the set is metallic), the SAME…

• r3_assets_unused

  The account's images, models and audio files that nothing uses — no project, no entity template, no other user's project — with each one's size and date, biggest first, and the total. The same report as the R3 app's Settings → Storage, by…

• r3_asset_delete

  Delete one of the account's images, models, audio files, Blender models (kind blender: a whole uploaded .blend with every version; its meshes in use stay) or texture sets (kind textureSet: the set and its maps, r3_texture_create made it)…

• r3_bug_report

  Send R3 a bug report about R3 ITSELF (the engine, the editor, these tools), in the user's name and naming you (your agent key or app connection). It becomes one of the user's support issues, which only the user and R3's team see. Use it…

• r3_bug_reports_mine

  The user's own support issues — bug reports and questions they or their agents (agent keys and app connections) sent R3 — newest first, with status, date, the project and whether an agent filed it (and which), each with its link. It shows…

• r3_roadmap_list

  The public R3 roadmap: what is planned, in progress, proposed by the community and shipped, with each item's vote count and whether the user has voted for it — plus the user's OWN suggestions still awaiting R3's approval, marked pending…

• r3_roadmap_upvote

  Add the user's vote to a public roadmap item (its id from r3_roadmap_list), when the user wants it or it covers what you were about to suggest. One vote per user: an item the user already voted for stays voted, and this never removes a…

• r3_roadmap_suggest

  Suggest a feature for R3's public roadmap, in the user's name and naming you (your agent key or app connection). It is HELD until R3's team approves it: not public, not votable, until then. r3_roadmap_list shows whether an item already…

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