bitrix_task_attach_files · Email MCP Server MCP

WHAT IT DOES

What bitrix_task_attach_files does on Email MCP Server

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

WHY IT NEEDS A POLICY

Why bitrix_task_attach_files needs a policy

Attaching files to a task creates a new association or modifies existing task records in Bitrix24. This is a data modification operation with side effects, but the changes are reversible (files can be removed). It does not delete data, execute arbitrary code, move money, or read sensitive information alone.

From the tool's definition Tool description states it attaches files to a task, which modifies task metadata/state. The action is reversible (files can be detached), making it a Write operation rather than Destructive.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

bitrix_task_attach_files Rate-limited

bitrix_task_attach_files 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": {
    "bitrix_task_attach_files": {
      "limits": [
        {
          "counter": "bitrix_task_attach_files_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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

FAQ

Questions about bitrix_task_attach_files

What does the bitrix_task_attach_files tool do? +

Attach files to a task in Bitrix24 (files must be already uploaded to Bitrix24). It is categorised as a Write tool in the Email 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 bitrix_task_attach_files? +

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

What risk level is bitrix_task_attach_files? +

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

Can I rate-limit bitrix_task_attach_files? +

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

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

bitrix_task_attach_files is provided by the Email MCP Server MCP server (sventern/mcp_email). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.