write_project_file_preview · MCP SAPUI5 Server MCP

WHAT IT DOES

What write_project_file_preview does on MCP SAPUI5 Server

AI agents use write_project_file_preview to create or update resources in MCP SAPUI5 Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your MCP SAPUI5 Server environment.

WHY IT NEEDS A POLICY

Why write_project_file_preview needs a policy

This tool creates or modifies project files (reversibly), which is characteristic of the Write category. Although it is described as a 'preview', the core function is file writing. The 'preview' aspect and 'safe workspace' framing suggest it may offer undo capability or dry-run semantics, which keeps it in Write rather than Destructive.

From the tool's definition Tool name contains 'write' and description explicitly states 'file write'. The terms 'preview' and 'safe workspace' indicate it modifies files within a project context, reversibly creating or updating content.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

write_project_file_preview Rate-limited

write_project_file_preview 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": {
    "write_project_file_preview": {
      "limits": [
        {
          "counter": "write_project_file_preview_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 MCP SAPUI5 Server, so you can run agents against it safely.

FAQ

Questions about write_project_file_preview

What does the write_project_file_preview tool do? +

Preview a safe workspace file write with hashes, line summary, and textual diff preview. It is categorised as a Write tool in the MCP SAPUI5 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 write_project_file_preview? +

Register the MCP SAPUI5 Server MCP server in PolicyLayer and add a rule for write_project_file_preview: 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 MCP SAPUI5 Server. Nothing to install.

What risk level is write_project_file_preview? +

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

Can I rate-limit write_project_file_preview? +

Yes. Add a rate_limit block to the write_project_file_preview 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 write_project_file_preview completely? +

Set action: deny in the PolicyLayer policy for write_project_file_preview. 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 write_project_file_preview? +

write_project_file_preview is provided by the MCP SAPUI5 Server MCP server (santiagosanmartinn/mcpui5server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.