teams_workspace_write · Outpost MCP: Risk & Policy

WHAT IT DOES

What teams_workspace_write does on Outpost

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

WHY IT NEEDS A POLICY

Why teams_workspace_write needs a policy

The 'write' suffix strongly suggests this tool creates or modifies Teams workspace data reversibly. Without a description, confidence is moderate but the naming convention is clear. Classification as Write rather than Execute because 'write' operations typically modify data structures rather than execute arbitrary code or scripts.

From the tool's definition Tool name 'teams_workspace_write' explicitly contains 'write', indicating data modification capability on Microsoft Teams workspaces via Microsoft Graph API.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

teams_workspace_write Rate-limited

teams_workspace_write 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": {
    "teams_workspace_write": {
      "limits": [
        {
          "counter": "teams_workspace_write_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 Outpost, so you can run agents against it safely.

FAQ

Questions about teams_workspace_write

What does the teams_workspace_write tool do? +

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

How do I enforce a policy on teams_workspace_write? +

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

What risk level is teams_workspace_write? +

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

Can I rate-limit teams_workspace_write? +

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

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

teams_workspace_write is provided by the Outpost MCP server (signalclaude/outpost). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.