# get_upload_url

For clients that can upload bytes: returns a presigned PUT URL for a .glb (and optionally a PNG preview). Then call finalize_upload with the returned keys.

Agent View of the PolicyLayer registry record for `get_upload_url`. HTML page: https://policylayer.com/tools/3dassets-mcp/get-upload-url

## Facts

- Tool: `get_upload_url`
- Server: 3dassets (`3dassets-mcp`) — https://policylayer.com/tools/3dassets-mcp.md
- Install: `npx -y 3dassets-mcp`
- Homepage: https://www.npmjs.com/package/3dassets-mcp
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 3 (2 required)
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `filename` | string | yes |  |
| `withPreview` | boolean | no |  |
| `contentLength` | integer | yes |  |

Parameters from the server's own tool schema.

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

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_upload_url",
    "arguments": {
      "filename": "<filename>",
      "contentLength": 0
    }
  }
}
```

## Why get_upload_url is rated Low

Even though get_upload_url only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

Risk signals: Accepts file system path (filename)

## Use case

AI agents call get_upload_url to retrieve information from 3dassets 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 3dassets:

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

## Other tools on 3dassets (19)

- `finalize_upload` — Financial — https://policylayer.com/tools/3dassets-mcp/finalize-upload.md
- `get_asset` — Read — https://policylayer.com/tools/3dassets-mcp/get-asset.md
- `get_asset_usage` — Read — https://policylayer.com/tools/3dassets-mcp/get-asset-usage.md
- `get_demo` — Read — https://policylayer.com/tools/3dassets-mcp/get-demo.md
- `get_pack` — Read — https://policylayer.com/tools/3dassets-mcp/get-pack.md
- `list_ai_models` — Read — https://policylayer.com/tools/3dassets-mcp/list-ai-models.md
- `list_categories` — Read — https://policylayer.com/tools/3dassets-mcp/list-categories.md
- `list_demos` — Read — https://policylayer.com/tools/3dassets-mcp/list-demos.md
- `list_licenses` — Read — https://policylayer.com/tools/3dassets-mcp/list-licenses.md
- `list_tags` — Read — https://policylayer.com/tools/3dassets-mcp/list-tags.md
- `my_assets` — Read — https://policylayer.com/tools/3dassets-mcp/my-assets.md
- `my_packs` — Read — https://policylayer.com/tools/3dassets-mcp/my-packs.md
- `search_assets` — Read — https://policylayer.com/tools/3dassets-mcp/search-assets.md
- `search_packs` — Read — https://policylayer.com/tools/3dassets-mcp/search-packs.md
- `verify_account` — Read — https://policylayer.com/tools/3dassets-mcp/verify-account.md
- `create_account` — Write — https://policylayer.com/tools/3dassets-mcp/create-account.md
- `submit_asset_from_url` — Write — https://policylayer.com/tools/3dassets-mcp/submit-asset-from-url.md
- `submit_pack` — Write — https://policylayer.com/tools/3dassets-mcp/submit-pack.md
- `update_asset` — Write — https://policylayer.com/tools/3dassets-mcp/update-asset.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=3dassets-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/3dassets-mcp