# three.ws 3D Studio (free) (remote · three.ws)

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

- Trust score: 77/100 (medium)
- Change this week: +5
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- remote · `three.ws`: 77/100 (this document), [markdown](https://verifymcp.io/servers/nirholas-threews-3d-studio-free/api-mcp-studio.md), [page](https://verifymcp.io/servers/nirholas-threews-3d-studio-free/api-mcp-studio)

## Channel facts

- Endpoint: `https://three.ws/api/mcp-studio`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.1`

## Trust breakdown

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. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-03.

- **Endpoint Security**: 83/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC is configured correctly; the domain's records validate against the full chain to the root.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 81/100
  - 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 1731 tokens (~144/item across 12 items; 10 tools + 2 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 27/100
  - Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Capabilities**: 73/100
  - Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28.
  - Supports UI / widget rendering.

## Install

### Claude

```bash
claude mcp add --transport http nirholas-threews-3d-studio-free https://three.ws/api/mcp-studio
```

### Codex

```toml
[mcp_servers.nirholas-threews-3d-studio-free]
url = "https://three.ws/api/mcp-studio"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "nirholas-threews-3d-studio-free": {
      "type": "remote",
      "url": "https://three.ws/api/mcp-studio",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add nirholas-threews-3d-studio-free --url https://three.ws/api/mcp-studio --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  nirholas-threews-3d-studio-free:
    url: "https://three.ws/api/mcp-studio"
```

### Other

```json
{
  "mcpServers": {
    "nirholas-threews-3d-studio-free": {
      "type": "http",
      "url": "https://three.ws/api/mcp-studio"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-02 (score 77, +1)

No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-31 (score 76, +4)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-30 (score 72, −1)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-29 (score 73, +1)

- [security] The server rewrote its instructions, which are the text every model session reads
- [functional] New tool “check_job”

### 2026-07-27 (score 72, +1)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-26 (score 71)

First indexed and scored.

## MCP tools (10)

### `forge_free` (~149 tokens)

Generate a 3D model from text

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.

Input parameters:

- `prompt` (string, required): Description of the single object or character to model, e.g. "a friendly round robot mascot, glossy white plastic".
- `tier` (string): Detail level: draft (fastest), standard (default), or high (best, slower; may fall back to standard under load).

### `text_to_avatar` (~83 tokens)

Generate a 3D avatar

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.

Input parameters:

- `image_url` (string): Optional http(s) URL to a reference image to reconstruct in 3D.
- `prompt` (string): Description of the avatar to generate.

### `mesh_forge` (~100 tokens)

Generate a 3D mesh (art-directed)

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.

Input parameters:

- `image_url` (string): Optional http(s) URL to a reference image to reconstruct directly.
- `prompt` (string): Description of the single object to model.

### `rig_mesh` (~98 tokens)

Rig a 3D model for animation

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.

Input parameters:

- `glb_url` (string, required): http(s) URL to the static GLB mesh to rig.

### `forge_avatar` (~151 tokens)

Generate a rigged, animation-ready avatar

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.

Input parameters:

- `allow_non_humanoid` (boolean): Set true to rig a non-humanoid subject anyway (rigging assumes a humanoid figure).
- `image_url` (string): Optional http(s) URL to a reference image to reconstruct in 3D.
- `prompt` (string): Description of the character/avatar to generate.

### `refine_model` (~311 tokens)

Refine a 3D model by describing a change

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 — the returned lineage drives a version strip in the viewer. Renders the new version inline in the interactive 3D viewer.

Input parameters:

- `glb_url` (string, required): http(s) URL of the model to refine (e.g. the glbUrl a previous generation returned).
- `instruction` (string, required): The change to make, in plain language: "make it metallic", "bigger helmet", "add a cape".
- `parent_index` (integer): Optional — branch off an earlier version in parent_lineage (its index) instead of the latest.
- `parent_lineage` (array): Optional — the lineage array from a previous refine_model result, to extend the same version history.
- `parent_prompt` (string): Optional — the prompt that produced the model being refined, so the change builds on it instead of starting over.
- `reference_image_url` (string): Optional http(s) image of the current model to anchor the re-generation (image→3D). Omit for text-guided refinement.

### `check_job` (~89 tokens)

Check a pending 3D generation

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. When it is done the model renders inline in the interactive 3D viewer.

Input parameters:

- `job_id` (string, required): The job_id (or jobId) a pending generation returned.

### `create_agent_persona` (~216 tokens)

Save a rigged model as a living, persistent agent body

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. No sign-in required.

Input parameters:

- `glb_url` (string, required): Public https URL of the rigged GLB to embody (e.g. from forge_avatar).
- `name` (string, required): A display name for the persona, 1–80 characters.
- `source_prompt` (string): Optional: the prompt that generated this body, kept as provenance.
- `voice` (string): Optional voice name to speak with (used for audio-driven lip-sync when available).

### `get_agent_persona` (~86 tokens)

Reload a persona by id (continuity across sessions)

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 at the start of a conversation when the user returns to a named agent.

Input parameters:

- `persona_id` (string, required): The persona_id returned by create_agent_persona.

### `persona_say` (~144 tokens)

Speak a reply through a persona — lip-sync + emotion + gesture

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. This is the turn-by-turn embodiment hook.

Input parameters:

- `emotion` (string): Optional explicit emotion override; omit to auto-detect from the text.
- `persona_id` (string, required): The persona to speak through.
- `text` (string, required): The reply text the agent is saying this turn — drives lip-sync and emotion.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/nirholas-threews-3d-studio-free/api-mcp-studio#diagnostics

## Score history

- 2026-08-03: 77
- 2026-08-02: 77
- 2026-08-01: 76
- 2026-07-31: 76
- 2026-07-30: 72
- 2026-07-29: 73
- 2026-07-28: 72
- 2026-07-27: 72
- 2026-07-26: 71

## Links

- Remote endpoint: https://three.ws/api/mcp-studio
- Repository: https://github.com/nirholas/three.ws
- Website: https://three.ws/
- Changelog RSS feed: https://verifymcp.io/servers/nirholas-threews-3d-studio-free/api-mcp-studio/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/nirholas-threews-3d-studio-free/api-mcp-studio/changelog.json
- HTML version of this page: https://verifymcp.io/servers/nirholas-threews-3d-studio-free/api-mcp-studio