write_document · Docsmith MCP: Risk & Policy

WHAT IT DOES

What write_document does on Docsmith MCP

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

WHY IT NEEDS A POLICY

Why write_document needs a policy

This tool creates or modifies document content across multiple formats (Excel, Word, PowerPoint, Text). While it enables data modification, it is not irreversible deletion/destruction, not financial, and not arbitrary code execution.

From the tool's definition Tool name is 'write_document' and description states 'Write document content (Excel, Word, PowerPoint, Text)' — clearly performs create/modify operations on documents.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

write_document Rate-limited

write_document 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_document": {
      "limits": [
        {
          "counter": "write_document_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 Docsmith MCP, so you can run agents against it safely.

FAQ

Questions about write_document

What does the write_document tool do? +

Write document content (Excel, Word, PowerPoint, Text). It is categorised as a Write tool in the Docsmith MCP 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_document? +

Register the Docsmith MCP server in PolicyLayer and add a rule for write_document: 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 Docsmith MCP. Nothing to install.

What risk level is write_document? +

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

Can I rate-limit write_document? +

Yes. Add a rate_limit block to the write_document 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_document completely? +

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

write_document is provided by the Docsmith MCP server (mcpc-tech/docsmith-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.