Medium Risk

add_text_file

Add a text file to the docs directory with a specified name. Please do not use

How to control add_text_file ↓

What add_text_file does on MCP Docs RAG Server

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

Medium Risk

Why add_text_file needs a policy

This tool creates or adds new files to a managed directory, which is a reversible write operation. It does not delete data (not Destructive), does not execute code (not Execute), and has no financial implications. The severity is medium because an agent could add malicious or incorrect files that pollute the documentation repository, but the operation is reversible by deletion.

From the tool's definition Tool description states 'Add a text file to the docs directory with a specified name', which is a create operation that modifies the local file system by adding new files.

Documented attack patterns abuse exactly the kind of access add_text_file gives an agent:

How to control add_text_file

PolicyLayer is an MCP gateway — it sits between your AI agents and MCP Docs RAG Server, and nothing reaches the server without passing your rules. This is the rule we recommend for add_text_file:

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "add_text_file": {
      "limits": [
        {
          "counter": "add_text_file_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

add_text_file 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.

  1. Create a free account and register MCP Docs RAG Server — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
LIMIT THIS TOOL →

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Related tools and policies

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Questions about add_text_file

What does the add_text_file tool do? +

Add a text file to the docs directory with a specified name. Please do not use. It is categorised as a Write tool in the MCP Docs RAG 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 add_text_file? +

Register the MCP Docs RAG Server MCP server in PolicyLayer and add a rule for add_text_file: 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 Docs RAG Server. Nothing to install.

What risk level is add_text_file? +

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

Can I rate-limit add_text_file? +

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

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

add_text_file is provided by the MCP Docs RAG Server MCP server (kazuph/mcp-docs-rag). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every MCP Docs RAG Server tool call.

Start from MCP Docs RAG Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

Free to start. No card required.

4 MCP Docs RAG Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.

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