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three.ws 3D Studio (free)

REMOTE · THREE.WS

Free text/image → 3D: generate, rig, avatar-ify, and refine GLB models. No auth, no payment.

Available components

0 this week 88 Trust /100

Last scanned (3 hours ago)

Scores higher than 96% of remote servers

Reachable. Last reached 5 Nov 2026.

Category Design and Media

Trust breakdown (7 categories)

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →

Endpoint Security83
Transport & Reachability100
Schema Quality & AI Usability80
  • 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
  • AI-judged instruction clarity (excellent).Pass
  • Context-footprint check failed: tool/resource definitions use about 3681 tokens (~204/item across 18 items; 16 tools + 2 resources), over budget; trim descriptions and params. See how to fix → Fail
  • Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management100
  • No destabilizing schema changes in the last 30 days.Pass
Tool Coverage99
  • 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
  • 98% of tool parameters carry a description.Partial
Tool Safety100
  • No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
  • We read all 16 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
  • An AI judge read all 18 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities73
  • Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28. See how to fix → Fail
  • Supports UI / widget rendering.Pass
Changelog

Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.

  • 5 Nov 26 0
    • Stability: 0.97 → pass security
  • 4 Nov 26 0
    • Stability: pass → 0.97 functional
  • 24 Oct 26 0
    • The server rewrote its instructions, which are the text every model session reads security
    • Tool “check_job” rewrote its description, which is the text the model reads security
    • Tool “forge_avatar” rewrote its description, which is the text the model reads security
    • Tool “forge_free” rewrote its description, which is the text the model reads security
    • Tool “get_job” rewrote its description, which is the text the model reads security
    • Tool “look_at_model” rewrote its description, which is the text the model reads security
    • Tool “mesh_forge” rewrote its description, which is the text the model reads security
    • Tool “refine_model” rewrote its description, which is the text the model reads security
    • Tool “rig_mesh” rewrote its description, which is the text the model reads security
    • Tool “text_to_avatar” rewrote its description, which is the text the model reads security
    • New tool “search_docs” functional
    • “forge_avatar” reworded the description of “idempotency_key” cosmetic
    • “forge_free” reworded the description of “idempotency_key” cosmetic
    • “get_job” reworded the description of “job_id” cosmetic
    • “get_job” reworded the description of “refine” cosmetic
    • “mesh_forge” reworded the description of “idempotency_key” cosmetic
    • “refine_model” reworded the description of “idempotency_key” cosmetic
    • “rig_mesh” reworded the description of “idempotency_key” cosmetic
    • “text_to_avatar” reworded the description of “idempotency_key” cosmetic
    • Tool “get_job” changed its title: Get the status of a 3D job → Get a 3D generation job cosmetic
  • 12 Oct 26 0
    • Tool “check_job” rewrote its description, which is the text the model reads security
    • Tool “create_agent_persona” rewrote its description, which is the text the model reads security
    • Tool “forge_avatar” rewrote its description, which is the text the model reads security
    • Tool “forge_free” rewrote its description, which is the text the model reads security
    • Tool “get_agent_persona” rewrote its description, which is the text the model reads security
    • Tool “get_catalog_item” rewrote its description, which is the text the model reads security
    • Tool “get_item_source” rewrote its description, which is the text the model reads security
    • Tool “get_job” rewrote its description, which is the text the model reads security
    • Tool “look_at_model” rewrote its description, which is the text the model reads security
    • Tool “mesh_forge” rewrote its description, which is the text the model reads security
    • Tool “persona_say” rewrote its description, which is the text the model reads security
    • Tool “refine_model” rewrote its description, which is the text the model reads security
    • Tool “rig_mesh” rewrote its description, which is the text the model reads security
    • Tool “text_to_avatar” rewrote its description, which is the text the model reads security
  • 10 Oct 26 −1
    • The server rewrote its instructions, which are the text every model session reads security
    • Schema quality: 156 → 190 ▼ functional
    • The server now declares the “prompts” capability functional
    • New prompt “agent-get-started” functional
    • New prompt “asset-pack” functional
    • New prompt “avatar-from-photo” functional
    • New prompt “daily-3d-brief” functional
    • New tool “get_job” functional
    • “forge_avatar” added an optional parameter “idempotency_key” cosmetic
    • “forge_free” added an optional parameter “idempotency_key” cosmetic
    • “mesh_forge” added an optional parameter “idempotency_key” cosmetic
    • “refine_model” added an optional parameter “idempotency_key” cosmetic
    • “rig_mesh” added an optional parameter “idempotency_key” cosmetic
    • “text_to_avatar” added an optional parameter “idempotency_key” cosmetic
  • 2 Oct 26 89
    • The server rewrote its instructions, which are the text every model session reads security
    • Schema quality: 1949 → 2511 ▼ functional
    • New tool “get_catalog_item” functional
    • New tool “get_item_source” functional
    • New tool “search_catalog” functional
  • 30 Sept 26 0
    • “check_job” added an optional parameter “refine” cosmetic

    1 cosmetic change on this day. Switch on “Show cosmetic changes” to see it.

  • 28 Sept 26 0
    • We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
Diagnostics

Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.

Captured 5 Nov 2026 · Probed https://three.ws/api/mcp-studio

TLS valid

Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .

Subject Issuer Valid from Valid until Key Signature Serial
CN=three.ws CN=WR3,O=Google Trust Services,C=US 22 Oct 2026 20 Jan 2027 RSA 2048 SHA256-RSA af61b5a875cc7722107f1d3c2e2662f1
SANs: three.ws, www.three.ws
CN=WR3,O=Google Trust Services,C=US (CA) CN=GTS Root R1,O=Google Trust Services LLC,C=US 13 Dec 2023 20 Feb 2029 RSA 2048 SHA256-RSA 7ff005a91568d63abc22861684aa4b5a
CN=GTS Root R1,O=Google Trust Services LLC,C=US (CA) CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE 19 Jun 2020 28 Jan 2028 RSA 4096 SHA256-RSA 77bd0d6cdb36f91aea210fc4f058d30d

Background: What to check on a remote MCP endpoint →

DNSSEC secure

Validation of three.ws. — Secure

Zone DS Keys Algorithms Outcome
. trust_anchor 20326, 38696 8, 8 Verified
ws. present 36454 8 Verified
three.ws. present 62777 13 Verified
three.ws. Verified address RRset verified with the apex keys
Authentication No authorisation required

The endpoint answered without asking for a token. Anyone who knows the URL can reach it.

Result No authorisation required
HTTP status 200
Header Value
strict-transport-security max-age=63072000; includeSubDomains; preload
content-security-policy base-uri 'self'; object-src 'none'; script-src 'self' 'unsafe-inline' 'unsafe-eval' blob: https://cdn.jsdelivr.net https://cdnjs.cloudflare.com https://unpkg.com https://esm.sh https://ajax.googleapis.com https://s3.tradingview.com https://platform.twitter.com https://three.ws; worker-src 'self' blob:; frame-ancestors 'self' https://ibm.com https://*.ibm.com https://*.seismic.com; report-uri /api/client-errors
x-content-type-options nosniff
referrer-policy strict-origin-when-cross-origin
permissions-policy accelerometer=(), autoplay=(self), camera=(), display-capture=(), encrypted-media=(self), geolocation=(), gyroscope=(), magnetometer=(), microphone=(), midi=(), payment=(self), serial=(), usb=(), xr-spatial-tracking=(self)

Background: How OAuth 2.1 works in the 2026 MCP spec →

Transports 2 probes
Transport URL Outcome Status Location
streamable-http https://three.ws/api/mcp-studio Verified 200
http (plaintext) http://three.ws/api/mcp-studio HTTPS enforced 301 https://three.ws:443/api/mcp-studio
MCP tools · 16 exposed · ~3,182 tokens

The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →

Tool Tokens
check_job ~154

Check on a 3D generation that returned status "pending" and collect the finished model. Pass the job_id from the pending result. While it is still rendering you get updated timing; call again after the suggested wait. Checking can save the completed model and restart failed work on another provider. When it is done the model renders inline in the interactive 3D viewer. Use this when a generation tool returned status "pending" and you need to collect the finished model.

NameTypeReqDescription
job_idstringyesThe job_id (or jobId) a pending generation returned.
refineobject–Optional: the refine object a pending refine_model result carried. Pass it back unchanged so the finished model joins that version history.

No output schema declared.

No examples provided.

create_agent_persona ~233

Turn a generated GLB into a NAMED, persistent agent body: a "persona" the assistant reuses across turns and across sessions. The model is copied into durable storage so the body survives the source URL expiring, then registered under a stable persona_id. The returned view renders the LIVING body inline: it idles between turns, and persona_say makes it lip-sync and emote a reply. The persona_id is the handle: keep it and pass it to get_agent_persona or persona_say later to bring the exact same body back. Use this once a rigged model should become a recurring character the assistant speaks through. No sign-in required.

NameTypeReqDescription
glb_urlstringyesPublic https URL of the rigged GLB to embody (e.g. from forge_avatar).
namestringyesA display name for the persona, 1–80 characters.
source_promptstring–Optional: the prompt that generated this body, kept as provenance.
voicestring–Optional voice name to speak with (used for audio-driven lip-sync when available).

No output schema declared.

No examples provided.

forge_avatar ~248

Generate a rigged, animation-ready 3D avatar (GLB) from a single text prompt or a reference image, in one step. Generates the mesh, then auto-rigs it with a humanoid skeleton so it is ready to pose and animate. Best for characters; objects are steered to the mesh generator. Renders inline in an interactive 3D viewer. Use this when the user wants a posable, animation-ready character in one step instead of generating then rigging.

NameTypeReqDescription
allow_non_humanoidboolean–Set true to rig a non-humanoid subject anyway (rigging assumes a humanoid figure).
idempotency_keystring–Optional: any string you choose (up to 200 characters) that names this one generation, such as a task id. Calling again with the same key within 24 hours returns the original job instead of starting…
image_urlstring–Optional http(s) URL to a reference image to reconstruct in 3D.
promptstring–Description of the character/avatar to generate.

No output schema declared.

No examples provided.

forge_free ~243

Turn a text prompt into a textured, downloadable 3D model (GLB), free. Describe a single object, character, or creature; the studio generates an interactive model you can rotate, view, and download. Optional quality tier (draft, standard, high); high is slower and may fall back to standard under load. Renders inline in an interactive 3D viewer. Use this when the user wants a new 3D object, character or creature from a text description.

NameTypeReqDescription
idempotency_keystring–Optional: any string you choose (up to 200 characters) that names this one generation, such as a task id. Calling again with the same key within 24 hours returns the original job instead of starting…
promptstringyesDescription of the single object or character to model, e.g. "a friendly round robot mascot, glossy white plastic".
tierstring–Detail level: draft (fastest), standard (default), or high (best, slower; may fall back to standard under load).

No output schema declared.

No examples provided.

get_agent_persona ~84

Bring back a previously saved persona by its persona_id: the SAME body and identity, in a fresh session. Returns the persona name, its model, the accumulated turn count, and the inline living-body view. Use this when a conversation starts and the user returns to a named agent.

NameTypeReqDescription
persona_idstringyesThe persona_id returned by create_agent_persona.

No output schema declared.

No examples provided.

get_catalog_item ~125

Free, no account needed. Read one three.ws catalog item in full by its id from search_catalog (for example "object:adjustable_wrench"): metadata, license, CDN urls, the site links that preview or edit it, related items of the same kind, and which source frameworks get_item_source can emit for it. Use this after search_catalog to inspect one result before you embed it; for paste-ready code call get_item_source instead.

NameTypeReqDescription
idstringyesCatalog id as `<kind>:<name>` from search_catalog. A bare name is also accepted.

No output schema declared.

No examples provided.

get_item_source ~193

Free, no account needed. Returns working code that renders one three.ws catalog item on any site: the <agent-3d> web component (pinned to the exact published version with its SRI hash), the <model-viewer> tag our own browse grids use, plain three.js with GLTFLoader, or a React component. Motion clips return three.js code that parses the clip JSON and plays it. Omit `framework` to get the one that fits the item best; pass `all` to get every variant at once. Use this when you are ready to put a catalog item on a page or in an app; call get_catalog_item first if you still need its license or metadata.

NameTypeReqDescription
frameworkstring–Which form to emit. Defaults to the recommended one for the item kind. "all" returns every applicable variant.
idstringyesCatalog id from search_catalog.

No output schema declared.

No examples provided.

get_job ~198

Status of a 3D generation job. Pass the job_id any generation tool returned with status "pending". Returns status (pending, done or failed), phase, progress from 0 to 1, eta_seconds and elapsed_seconds while it runs; when done, the model with its viewer_url, glb_url, poster_png_url and embed_html; when failed, the reason and what to do next. Call it as often as you like: it never starts or repeats a generation. Between calls, wait about the eta_seconds it reports, or 15 seconds when it reports none. Use this when a generation tool returned status "pending" and you need its current status or the finished model.

NameTypeReqDescription
job_idstringyesThe job_id (or jobId) a generation tool returned.
refineobject–Optional: the refine object a pending refine_model result carried, passed back unchanged so the finished model joins that version history.

No output schema declared.

No examples provided.

look_at_model ~192

FREE. See a 3D model instead of just linking to it. Renders the GLB from several angles and returns the frames as images you can actually look at, plus its geometry (triangles, materials, textures) and a plain reading of what those numbers mean. Use it right after generating to check your own work: is the subject complete, is the back finished, is anything melted or fused? Then regenerate naming the fault you saw. Works on any public https .glb, not only ones made here. Use this to visually inspect a GLB for defects before you hand it to the user.

NameTypeReqDescription
glb_urlstringyesPublic https URL of the .glb to look at.
sizeinteger–Pixel size of each square frame. Default 512.
viewsarray–Angles to render. Default: three-quarter, front, side, back.

No output schema declared.

No examples provided.

mesh_forge ~199

Generate a textured 3D mesh (GLB) from a text prompt or a reference image URL. In text mode an AI art-director first refines your prompt into an optimized single-subject spec for higher mesh quality. Renders inline in an interactive 3D viewer. Use this when you want a higher quality mesh from a rough prompt or reference image, with the prompt refined for you first.

NameTypeReqDescription
idempotency_keystring–Optional: any string you choose (up to 200 characters) that names this one generation, such as a task id. Calling again with the same key within 24 hours returns the original job instead of starting…
image_urlstring–Optional http(s) URL to a reference image to reconstruct directly.
promptstring–Description of the single object to model.

No output schema declared.

No examples provided.

persona_say ~161

Make a persona PERFORM a reply: the body lip-syncs the text and shows the matching facial expression and body gesture. Pass the persona_id and the exact text the agent is saying this turn; the emotion is detected from the text automatically (or set it explicitly). The returned view animates the body for this turn: show it alongside the reply. Use this whenever the persona speaks, on every turn, with the persona_id from create_agent_persona or get_agent_persona.

NameTypeReqDescription
emotionstring–Optional explicit emotion override; omit to auto-detect from the text.
persona_idstringyesThe persona to speak through.
textstringyesThe reply text the agent is saying this turn: drives lip-sync and emotion.

No output schema declared.

No examples provided.

refine_model ~404

Iterate on a model you already generated: just describe the change in words ("make it metallic", "bigger helmet", "add wings"). The studio re-generates a new version anchored to the previous one, carrying its form and materials forward. Pass the previous model's glb_url and, when you have it, the prompt that made it (parent_prompt) so the change builds on it. Each refinement is recorded as a new version in a lineage you can revert to or branch from, and the returned lineage drives a version strip in the viewer. Renders the new version inline in the interactive 3D viewer. Use this when the user wants to change a model you already generated instead of starting over.

NameTypeReqDescription
glb_urlstringyeshttp(s) URL of the model to refine (e.g. the glbUrl a previous generation returned).
idempotency_keystring–Optional: any string you choose (up to 200 characters) that names this one generation, such as a task id. Calling again with the same key within 24 hours returns the original job instead of starting…
instructionstringyesThe change to make, in plain language: "make it metallic", "bigger helmet", "add a cape".
parent_indexinteger–Optional: branch off an earlier version in parent_lineage (its index) instead of the latest.
parent_lineagearray–Optional: the lineage array from a previous refine_model result, to extend the same version history.
parent_promptstring–Optional: the prompt that produced the model being refined, so the change builds on it instead of starting over.
reference_image_urlstring–Optional http(s) image of the current model to anchor the re-generation (image→3D). Omit for text-guided refinement.

No output schema declared.

No examples provided.

rig_mesh ~194

Auto-rig a static 3D model (GLB) into an animation-ready model: adds a humanoid skeleton and skin weights so it can be posed and animated. Provide the GLB URL of a model (e.g. one generated by the other tools). Renders the rigged result inline in an interactive 3D viewer. Use this when you already have a GLB and want it rigged so it can be posed and animated.

NameTypeReqDescription
glb_urlstringyeshttp(s) URL to the static GLB mesh to rig.
idempotency_keystring–Optional: any string you choose (up to 200 characters) that names this one generation, such as a task id. Calling again with the same key within 24 hours returns the original job instead of starting…

No output schema declared.

No examples provided.

search_catalog ~241

Free, no account needed. Search every ready-made asset three.ws publishes in one call: CC0 3D props and objects, rigged humanoid characters, and retargetable motion clips. Returns ids, titles, tags, licenses, and CDN urls, plus category facets to narrow the next query. Use this before generating anything: if the catalog already has the prop or character, dropping it in is instant and free where generating one is not. Feed a returned id to get_item_source for code that renders it on any site.

NameTypeReqDescription
categorystring–Exact category from a previous result's facets.
kindstring–Narrow to one library: object (CC0 props), character (rigged humanoids), animation (motion clips).
limitinteger––
offsetinteger–Page offset. Use next_offset from the previous response.
qstring–Free text over titles, names, tags, and categories, e.g. "wooden chair", "office", "wave". Every word must match somewhere, so start broad.
tagstring–Exact tag from a previous result's facets.

No output schema declared.

No examples provided.

search_docs ~136

Free, no account needed. Search the three.ws documentation for the section that answers a question, such as "how do I embed an avatar on my site" or "how does auto-rigging work". Returns the best sections ranked, each with the page and heading title, a url that opens the docs reader at that heading, and a snippet from the start of the section. Use this before guessing at an API or a flow; to browse ready-made 3D assets call search_catalog instead.

NameTypeReqDescription
limitinteger–How many sections to return.
querystringyesA question or keywords, in plain words.

No output schema declared.

No examples provided.

text_to_avatar ~177

Generate a textured 3D avatar (GLB) from a text description or a reference image URL. Best for characters and figures. Renders inline in an interactive 3D viewer. Use this when the user wants a character or figure generated from a text description or a reference image.

NameTypeReqDescription
idempotency_keystring–Optional: any string you choose (up to 200 characters) that names this one generation, such as a task id. Calling again with the same key within 24 hours returns the original job instead of starting…
image_urlstring–Optional http(s) URL to a reference image to reconstruct in 3D.
promptstring–Description of the avatar to generate.

No output schema declared.

No examples provided.

Install

How do I install the three.ws 3D Studio (free) MCP server?

three.ws 3D Studio (free) is a hosted endpoint at https://three.ws/api/mcp-studio, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

remote · three.ws

# add to Claude Code
claude mcp add --transport http nirholas-threews-3d-studio-free 'https://three.ws/api/mcp-studio'
Common questions

What is the three.ws 3D Studio (free) MCP server?

three.ws 3D Studio (free) is an MCP server listed in the public MCP registry as io.github.nirholas/threews-3d-studio-free. Free text/image → 3D: generate, rig, avatar-ify, and refine GLB models. No auth, no payment. This page covers its hosted endpoint (https://three.ws/api/mcp-studio).

Is the three.ws 3D Studio (free) MCP server safe to use?

three.ws 3D Studio (free) scores 88 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

What tools does the three.ws 3D Studio (free) MCP server expose?

three.ws 3D Studio (free) exposes 16 tools: forge_free, text_to_avatar, mesh_forge, rig_mesh, forge_avatar, and 11 more. Their descriptions and schemas cost roughly 3,182 tokens of context every time the server is loaded.

Does the three.ws 3D Studio (free) MCP server require authentication?

No. We connected to three.ws 3D Studio (free) without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

Is the three.ws 3D Studio (free) MCP server still maintained?

three.ws 3D Studio (free) is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.