VoxelDraft – AI Voxel Modeling
REMOTE · VOXELDRAFT.COM · SCANNED SEP 29
Create, edit, render, save, and export voxel models with interactive 3D previews.
Available components
Recent critical change
Authorization (13 Sept 2026). See the changelog before you install this server.
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 Security57
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation check failed: no authorisation is required to call this server, and it exposes a tool marked destructive (save_voxel_model). See how to fix → View diagnostics → Fail
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability76
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 1669 tokens (~185/item across 9 items; 8 tools + 1 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 Management25
- Stability check failed: schema churn in the 17 days we've observed: 0 tool removals, 5 breaking changes, 0 auth/transport breaks, 0 additions. See how to fix → Fail
Tool Coverage79
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 26% of tool parameters carry a description.Partial
- Structured output schemas are declared (13% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 8 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 10 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a current MCP spec version (2026-07-28).Pass
- Supports UI / widget rendering.Pass
How do I install the VoxelDraft – AI Voxel Modeling MCP server?
VoxelDraft – AI Voxel Modeling is a hosted endpoint at https://voxeldraft.com/api/mcp, 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 · voxeldraft.com
claude mcp add --transport http huruki-geo-voxeldraft 'https://voxeldraft.com/api/mcp'
{
"mcpServers": {
"huruki-geo-voxeldraft": {
"url": "https://voxeldraft.com/api/mcp"
}
}
} {
"servers": {
"huruki-geo-voxeldraft": {
"type": "http",
"url": "https://voxeldraft.com/api/mcp"
}
}
} [mcp_servers.huruki-geo-voxeldraft] url = "https://voxeldraft.com/api/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"huruki-geo-voxeldraft": {
"type": "remote",
"url": "https://voxeldraft.com/api/mcp",
"enabled": true
}
}
} openclaw mcp add huruki-geo-voxeldraft --url 'https://voxeldraft.com/api/mcp' --transport streamable-http
mcp_servers:
huruki-geo-voxeldraft:
url: "https://voxeldraft.com/api/mcp" {
"McpServers": {
"huruki-geo-voxeldraft": {
"Transport": "http",
"Url": "https://voxeldraft.com/api/mcp"
}
}
} assistant mcp add huruki-geo-voxeldraft -t streamable-http -u 'https://voxeldraft.com/api/mcp'
{
"mcpServers": {
"huruki-geo-voxeldraft": {
"type": "http",
"url": "https://voxeldraft.com/api/mcp"
}
}
} The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.
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.
- 29 Sept 26 0
- Resource “VoxelDraft 3D Preview” now points somewhere else: ui://widget/voxeldraft-preview-v5.html → ui://widget/voxeldraft-preview-v8.html security
- Tool coverage: 100% → 13% ▼ functional
- Tool “render_voxel_model” now declares an output schema ▲ functional
- 28 Sept 26 +1
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 26 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 12 to 15.
- 25 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
- 24 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 5 to 9.
- 22 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 0 to 2.
- 14 Sept 26 −1
- A breaking change shipped without a version bump: still 0.5.1 ▼ security
- Resource “VoxelDraft 3D Preview” now points somewhere else: ui://widget/voxeldraft-preview-v3.html → ui://widget/voxeldraft-preview-v5.html security
- Tool “create_voxel_model” rewrote its description, which is the text the model reads security
- Tool “edit_voxel_model” rewrote its description, which is the text the model reads security
- Tool “export_voxel_model” rewrote its description, which is the text the model reads security
- Tool “inspect_voxel_model” rewrote its description, which is the text the model reads security
- Tool “load_voxel_project” rewrote its description, which is the text the model reads security
- Tool “render_voxel_model” rewrote its description, which is the text the model reads security
- Tool “save_voxel_model” rewrote its description, which is the text the model reads security
- Tool “create_voxel_model” dropped its output schema ▼ functional
- Tool “edit_voxel_model” dropped its output schema ▼ functional
- Tool “export_voxel_model” dropped its output schema ▼ functional
- Tool “inspect_voxel_model” dropped its output schema ▼ functional
- Tool “list_voxel_projects” dropped its output schema ▼ functional
- Tool “load_voxel_project” dropped its output schema ▼ functional
- Tool “render_voxel_model” dropped its output schema ▼ functional
- Tool “save_voxel_model” dropped its output schema ▼ functional
- “edit_voxel_model” reworded the description of “modelRef” cosmetic
- “export_voxel_model” reworded the description of “modelRef” cosmetic
- “inspect_voxel_model” reworded the description of “modelRef” cosmetic
- “render_voxel_model” reworded the description of “modelRef” cosmetic
- “save_voxel_model” reworded the description of “modelRef” cosmetic
- 13 Sept 26 +4
- Authorization: unverified → fail ▼ critical
- Stability: unverified → fail ▼ security
- The server rewrote its instructions, which are the text every model session reads security
- Tool “create_voxel_model” rewrote its description, which is the text the model reads security
- Tool “edit_voxel_model” rewrote its description, which is the text the model reads security
- Tool “export_voxel_model” rewrote its description, which is the text the model reads security
- Tool “inspect_voxel_model” rewrote its description, which is the text the model reads security
- Tool “list_voxel_projects” rewrote its description, which is the text the model reads security
- Tool “load_voxel_project” rewrote its description, which is the text the model reads security
- Tool “render_voxel_model” rewrote its description, which is the text the model reads security
- Tool “save_voxel_model” rewrote its description, which is the text the model reads security
- Tool “save_voxel_model” is now declared destructive security
- Schema quality: 1554 → 1765 ▼ functional
- “edit_voxel_model” added a required parameter “modelRef”, so existing callers break ▼ functional
- “export_voxel_model” added a required parameter “modelRef”, so existing callers break ▼ functional
- “inspect_voxel_model” added a required parameter “modelRef”, so existing callers break ▼ functional
- “render_voxel_model” added a required parameter “modelRef”, so existing callers break ▼ functional
- “save_voxel_model” added a required parameter “modelRef”, so existing callers break ▼ functional
- “edit_voxel_model” dropped the required parameter “model” ▼ functional
- “export_voxel_model” dropped the required parameter “model” ▼ functional
- “inspect_voxel_model” dropped the required parameter “model” ▼ functional
- “render_voxel_model” dropped the required parameter “model” ▼ functional
- “save_voxel_model” dropped the required parameter “model” ▼ functional
- Tool coverage: 6% → 26% ▲ functional
- Tool “create_voxel_model” now declares an output schema ▲ functional
- Tool “edit_voxel_model” now declares an output schema ▲ functional
- Tool “export_voxel_model” now declares an output schema ▲ functional
- Tool “inspect_voxel_model” now declares an output schema ▲ functional
- Tool “list_voxel_projects” now declares an output schema ▲ functional
- Tool “load_voxel_project” now declares an output schema ▲ functional
- Tool “render_voxel_model” now declares an output schema ▲ functional
- Tool “save_voxel_model” now declares an output schema ▲ functional
- The server now declares the “resources” capability functional
- First check of Capabilities: pass functional
- First check of Schema quality: 100 functional
- First check of Tool coverage: 100 functional
- New resource “VoxelDraft 3D Preview” functional
- Server version: 0.2.0 → 0.5.1 functional
- “render_voxel_model” added an optional parameter “background” cosmetic
- “render_voxel_model” added an optional parameter “view” cosmetic
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 29 Sept 2026 · Probed https://voxeldraft.com/api/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=voxeldraft.com | CN=WE1,O=Google Trust Services,C=US | 1 Aug 2026 | 30 Oct 2026 | ECDSA 256 | ECDSA-SHA256 | fecc5aa81da38ad30e4fbbcfd96d1982 |
| SANs: voxeldraft.com | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of voxeldraft.com. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| voxeldraft.com. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
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 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://voxeldraft.com/api/mcp | Verified | 200 | |
| http (plaintext) | http://voxeldraft.com/api/mcp | HTTPS enforced | 301 | https://voxeldraft.com/api/mcp |
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 →
create_voxel_model Create voxel model ~410
Create an editable VoxelDraft model from compact commands. Returns a short modelRef for later plugin calls and does not save to Cloud Projects. Use VoxelDraft's compact instruction stream instead of emitting one JSON object per voxel. Coordinates are integers 0..63. Colors are either #RRGGBB or a zero-based palette index. Commands: ["box",x1,y1,z1,x2,y2,z2,color,hollow?] ["ellipsoid",cx,cy,cz,rx,ry,rz,color,hollow?] ["cylinder","x"|"y"|"z",x,y,z,radius,height,color,hollow?] ["line",x1,y1,z1,x2,y2,z2,color] ["roof","x"|"z",x1,y1,z1,x2,y2,z2,color] (gable roof, axis is ridge direction) ["runs","x"|"y"|"z",color,[[x,y,z,length],...]] (preferred exact/freeform representation) ["points",color,[[x,y,z],...]] (sparse details only) ["erase",x1,y1,z1,x2,y2,z2] ["recolor",fromColor,toColor] ["copy",x1,y1,z1,x2,y2,z2,dx,dy,dz] ["repeat",x1,y1,z1,x2,y2,z2,dx,dy,dz,count] ["mirror","x"|"y"|"z",plane,x1,y1,z1,x2,y2,z2] (plane is a grid boundary 0..64) Prefer box/roof/ellipsoid/cylinder for bulk geometry, runs for irregular silhouettes, repeat/mirror for repeated or symmetric parts, and points only for small details. This usually uses far fewer model tokens than raw voxel JSON.
| Name | Type | Req | Description |
|---|---|---|---|
| commands | array | yes | – |
| name | string | – | – |
| palette | array | – | – |
No output schema declared.
No examples provided.
edit_voxel_model Edit voxel model ~418
Edit the temporary model identified by modelRef and return a new modelRef. This does not modify a saved cloud project. Use VoxelDraft's compact instruction stream instead of emitting one JSON object per voxel. Coordinates are integers 0..63. Colors are either #RRGGBB or a zero-based palette index. Commands: ["box",x1,y1,z1,x2,y2,z2,color,hollow?] ["ellipsoid",cx,cy,cz,rx,ry,rz,color,hollow?] ["cylinder","x"|"y"|"z",x,y,z,radius,height,color,hollow?] ["line",x1,y1,z1,x2,y2,z2,color] ["roof","x"|"z",x1,y1,z1,x2,y2,z2,color] (gable roof, axis is ridge direction) ["runs","x"|"y"|"z",color,[[x,y,z,length],...]] (preferred exact/freeform representation) ["points",color,[[x,y,z],...]] (sparse details only) ["erase",x1,y1,z1,x2,y2,z2] ["recolor",fromColor,toColor] ["copy",x1,y1,z1,x2,y2,z2,dx,dy,dz] ["repeat",x1,y1,z1,x2,y2,z2,dx,dy,dz,count] ["mirror","x"|"y"|"z",plane,x1,y1,z1,x2,y2,z2] (plane is a grid boundary 0..64) Prefer box/roof/ellipsoid/cylinder for bulk geometry, runs for irregular silhouettes, repeat/mirror for repeated or symmetric parts, and points only for small details. This usually uses far fewer model tokens than raw voxel JSON.
| Name | Type | Req | Description |
|---|---|---|---|
| commands | array | yes | – |
| modelRef | string | yes | Short temporary VoxelDraft model reference returned by model tools |
| palette | array | – | – |
No output schema declared.
No examples provided.
export_voxel_model Export voxel model ~56
Create direct download URLs for OBJ+MTL or compact VoxelDraft JSON from a modelRef.
| Name | Type | Req | Description |
|---|---|---|---|
| format | string | – | – |
| modelRef | string | yes | Short temporary VoxelDraft model reference returned by model tools |
No output schema declared.
No examples provided.
inspect_voxel_model Inspect voxel model ~50
Inspect a temporary VoxelDraft modelRef. Returns voxel count, command count, bounds, and colors.
| Name | Type | Req | Description |
|---|---|---|---|
| modelRef | string | yes | Short temporary VoxelDraft model reference returned by model tools |
No output schema declared.
No examples provided.
list_voxel_projects List my VoxelDraft projects ~24
List private VoxelDraft Cloud Projects. Requires project-read OAuth scope.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
load_voxel_project Load a VoxelDraft project ~47
Load one private Cloud Project and return a short modelRef for later plugin calls. Requires project-read OAuth scope.
| Name | Type | Req | Description |
|---|---|---|---|
| language | string | – | – |
| projectId | string | yes | – |
No output schema declared.
No examples provided.
render_voxel_model Render voxel model ~114
Preview a VoxelDraft modelRef. ChatGPT can render an interactive Three.js/WebGL widget; everyone also receives an interactive WebGL URL. Signed-in VoxelDraft Plus users may additionally receive a cached PNG when includeImage is true.
| Name | Type | Req | Description |
|---|---|---|---|
| background | string | – | – |
| imageSize | integer | – | – |
| includeImage | boolean | – | – |
| language | string | – | – |
| modelRef | string | yes | Short temporary VoxelDraft model reference returned by model tools |
| view | string | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| background | string | yes | – |
| downloadUrl | string | – | – |
| editUrl | string | yes | – |
| image | object | – | – |
| imageAvailable | boolean | – | – |
| imageError | string | – | – |
| imageSize | integer | yes | – |
| model | string | yes | – |
| modelRef | string | yes | Short temporary VoxelDraft model reference returned by model tools |
| name | string | yes | – |
| quota | object | – | – |
| reason | string | – | – |
| renderUrl | string | yes | – |
| renderer | string | yes | – |
| rendererVersion | string | yes | – |
| stats | object | yes | – |
| view | string | yes | – |
No examples provided.
save_voxel_model Save voxel model to my VoxelDraft account ~70
Save the temporary model identified by modelRef to private VoxelDraft Cloud Projects. Requires project-write OAuth scope. Pass projectId to update an existing owned cloud project.
| Name | Type | Req | Description |
|---|---|---|---|
| modelRef | string | yes | Short temporary VoxelDraft model reference returned by model tools |
| projectId | string | – | – |
No output schema declared.
No examples provided.
What is the VoxelDraft – AI Voxel Modeling MCP server?
VoxelDraft – AI Voxel Modeling is an MCP server listed in the public MCP registry as io.github.huruki-geo/voxeldraft. Create, edit, render, save, and export voxel models with interactive 3D previews. This page covers its hosted endpoint (https://voxeldraft.com/api/mcp).
Is the VoxelDraft – AI Voxel Modeling MCP server safe to use?
VoxelDraft – AI Voxel Modeling scores 66 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 VoxelDraft – AI Voxel Modeling MCP server expose?
VoxelDraft – AI Voxel Modeling exposes 8 tools: create_voxel_model, edit_voxel_model, inspect_voxel_model, render_voxel_model, export_voxel_model, and 3 more. Their descriptions and schemas cost roughly 1,189 tokens of context every time the server is loaded.
Does the VoxelDraft – AI Voxel Modeling MCP server require authentication?
No. We connected to VoxelDraft – AI Voxel Modeling without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the VoxelDraft – AI Voxel Modeling MCP server still maintained?
VoxelDraft – AI Voxel Modeling is still listed as active in the MCP registry. We last reached this channel on 29 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.