# listMaterialLayers

A read tool on the Spline MCP Server MCP server.

Agent View of the PolicyLayer registry record for `listMaterialLayers`. HTML page: https://policylayer.com/tools/aydinfer-spline-mcp-server/listmateriallayers

## Facts

- Tool: `listMaterialLayers`
- Server: Spline MCP Server (`aydinfer/spline-mcp-server`) — https://policylayer.com/tools/aydinfer-spline-mcp-server.md
- Homepage: https://github.com/aydinfer/spline-mcp-server
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "listMaterialLayers",
    "arguments": {}
  }
}
```

## Why listMaterialLayers is rated Low

The 'list' prefix strongly indicates data retrieval with no modification capability. In the context of a 3D design tool, listing material layers is analogous to querying or fetching configuration data. No evidence suggests creation, modification, execution, deletion, or financial impact. Confidence is slightly reduced due to empty description, but naming convention is reliable.

From the tool's own definition: "Tool name 'listMaterialLayers' indicates a query/retrieval operation with 'list' prefix, consistent with Read operations (list, get, fetch)."

## Use case

AI agents call listMaterialLayers to retrieve information from Spline MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Spline MCP Server:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "listMaterialLayers": {}
  }
}
```

## Other tools on Spline MCP Server (144)

- `deleteAction` — Destructive — https://policylayer.com/tools/aydinfer-spline-mcp-server/deleteaction.md
- `deleteApi` — Destructive — https://policylayer.com/tools/aydinfer-spline-mcp-server/deleteapi.md
- `deleteMaterialLayer` — Destructive — https://policylayer.com/tools/aydinfer-spline-mcp-server/deletemateriallayer.md
- `deleteObject` — Destructive — https://policylayer.com/tools/aydinfer-spline-mcp-server/deleteobject.md
- `deleteSnapshot` — Destructive — https://policylayer.com/tools/aydinfer-spline-mcp-server/deletesnapshot.md
- `deleteWebhook` — Destructive — https://policylayer.com/tools/aydinfer-spline-mcp-server/deletewebhook.md
- `applyEffectorToCloner` — Execute — https://policylayer.com/tools/aydinfer-spline-mcp-server/applyeffectortocloner.md
- `applyForce` — Execute — https://policylayer.com/tools/aydinfer-spline-mcp-server/applyforce.md
- `applySculptingBrush` — Execute — https://policylayer.com/tools/aydinfer-spline-mcp-server/applysculptingbrush.md
- `applyTorque` — Execute — https://policylayer.com/tools/aydinfer-spline-mcp-server/applytorque.md
- `controlHanaAnimation` — Execute — https://policylayer.com/tools/aydinfer-spline-mcp-server/controlhanaanimation.md
- `controlParticleSystem` — Execute — https://policylayer.com/tools/aydinfer-spline-mcp-server/controlparticlesystem.md
- `controlPathAnimation` — Execute — https://policylayer.com/tools/aydinfer-spline-mcp-server/controlpathanimation.md
- `convertMeshToGaussianSplatting` — Execute — https://policylayer.com/tools/aydinfer-spline-mcp-server/convertmeshtogaussiansplatting.md
- `createGaussianSplattingFromImages` — Execute — https://policylayer.com/tools/aydinfer-spline-mcp-server/creategaussiansplattingfromimages.md
- `exportSceneCode` — Execute — https://policylayer.com/tools/aydinfer-spline-mcp-server/exportscenecode.md
- `generateAnimationCode` — Execute — https://policylayer.com/tools/aydinfer-spline-mcp-server/generateanimationcode.md
- `generateObjectCode` — Execute — https://policylayer.com/tools/aydinfer-spline-mcp-server/generateobjectcode.md
- `generateTextWithOpenAI` — Execute — https://policylayer.com/tools/aydinfer-spline-mcp-server/generatetextwithopenai.md
- `navigateBetweenScenes` — Execute — https://policylayer.com/tools/aydinfer-spline-mcp-server/navigatebetweenscenes.md
- `sendWebhookData` — Execute — https://policylayer.com/tools/aydinfer-spline-mcp-server/sendwebhookdata.md
- `triggerEvent` — Execute — https://policylayer.com/tools/aydinfer-spline-mcp-server/triggerevent.md
- `triggerHanaState` — Execute — https://policylayer.com/tools/aydinfer-spline-mcp-server/triggerhanastate.md
- `triggerState` — Execute — https://policylayer.com/tools/aydinfer-spline-mcp-server/triggerstate.md
- `triggerWebhook` — Execute — https://policylayer.com/tools/aydinfer-spline-mcp-server/triggerwebhook.md
- `configureApiRequestAction` — Other — https://policylayer.com/tools/aydinfer-spline-mcp-server/configureapirequestaction.md
- `configureConditionalAction` — Other — https://policylayer.com/tools/aydinfer-spline-mcp-server/configureconditionalaction.md
- `configureEventParameters` — Other — https://policylayer.com/tools/aydinfer-spline-mcp-server/configureeventparameters.md
- `createSnapshot` — Other — https://policylayer.com/tools/aydinfer-spline-mcp-server/createsnapshot.md
- `distributeAlongPath` — Other — https://policylayer.com/tools/aydinfer-spline-mcp-server/distributealongpath.md
- …and 114 more: https://policylayer.com/tools/aydinfer-spline-mcp-server.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=aydinfer-spline-mcp-server · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/aydinfer-spline-mcp-server