update_files_sharing · Wpm Mcp Server MCP: Risk & Policy

WHAT IT DOES

What update_files_sharing does on Wpm Mcp Server

AI agents use update_files_sharing to create or update resources in Wpm Mcp Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Wpm Mcp Server environment.

WHY IT NEEDS A POLICY

Why update_files_sharing needs a policy

The tool modifies file data reversibly (update operation). While the sibling tools include financial operations (payments, refunds, charges) on this server, this specific tool is limited to file updates without destructive or financial implications. Severity is medium because unintended file updates could affect data integrity and access permissions, but changes are typically reversible.

From the tool's definition Tool name 'update_files_sharing' and description 'Updates a file' indicate modification of existing data. The '_sharing' suffix suggests the file relates to access control or permissions.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_files_sharing Rate-limited

update_files_sharing 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "update_files_sharing": {
      "limits": [
        {
          "counter": "update_files_sharing_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Wpm Mcp Server, so you can run agents against it safely.

FAQ

Questions about update_files_sharing

What does the update_files_sharing tool do? +

Updates a file. It is categorised as a Write tool in the Wpm Mcp Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on update_files_sharing? +

Register the Wpm Mcp Server MCP server in PolicyLayer and add a rule for update_files_sharing: 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 Wpm Mcp Server. Nothing to install.

What risk level is update_files_sharing? +

update_files_sharing is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit update_files_sharing? +

Yes. Add a rate_limit block to the update_files_sharing 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.

How do I block update_files_sharing completely? +

Set action: deny in the PolicyLayer policy for update_files_sharing. 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.

What MCP server provides update_files_sharing? +

update_files_sharing is provided by the Wpm Mcp Server MCP server (wpm-mcp-server-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.