This record as markdown: /tools/lxwl-mcp-server/onloon-file-upload--uploadfromurl.md
What onloon-file-upload__uploadFromUrl does on Lxwl
AI agents use onloon-file-upload__uploadFromUrl to create or update resources in Lxwl, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Lxwl environment.
| Parameter | Type | Required | Description |
|---|---|---|---|
url | string | Yes | 远程文件 URL |
dryRun | boolean | — | 只校验参数不实际上传 |
mainUserId | string | — |
Parameters from the server's own tool schema.
Why onloon-file-upload__uploadFromUrl is rated Medium
An AI agent can call onloon-file-upload__uploadFromUrl faster than any human can review: one bad instruction and it creates or modifies resources in Lxwl by the hundred, each call as confident as the last.
Risk signalsAccepts URL/endpoint input (url)
Attacks that exploit this kind of access
The rule that runs onloon-file-upload__uploadFromUrl safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Lxwl, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For onloon-file-upload__uploadFromUrl, this is the rule to start with:
onloon-file-upload__uploadFromUrl stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Lxwl, apply this rule, and every onloon-file-upload__uploadFromUrl call is checked against it from then on.
Questions about onloon-file-upload__uploadFromUrl
远程 URL 下载并上传 OSS(MD5 去重). It is categorised as a Write tool in the Lxwl MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
onloon-file-upload__uploadFromUrl accepts 3 parameters: url, dryRun, mainUserId. Required: url. The full parameter table on this page comes from the server's own tool schema.
Register the Lxwl MCP server in PolicyLayer and add a rule for onloon-file-upload__uploadFromUrl: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Lxwl. Nothing to install.
onloon-file-upload__uploadFromUrl is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the onloon-file-upload__uploadFromUrl rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for onloon-file-upload__uploadFromUrl. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
onloon-file-upload__uploadFromUrl is provided by the Lxwl MCP server (@lxwl/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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