index_workspace · Portable MCP Toolkit MCP: Risk & Policy

WHAT IT DOES

What index_workspace does on Portable MCP Toolkit

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

WHY IT NEEDS A POLICY

Why index_workspace needs a policy

The tool name 'index_workspace' implies it scans and indexes a workspace, likely writing data to a vector store or search index. This is a Write operation as it creates/updates index data. However, the description is empty, which lowers confidence. Severity is medium as misuse could index sensitive codebases or consume significant resources.

From the tool's definition Tool name 'index_workspace' and server context involving vector search and semantic code search suggest indexing/writing an index of the codebase.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

index_workspace Rate-limited

index_workspace 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": {
    "index_workspace": {
      "limits": [
        {
          "counter": "index_workspace_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 Portable MCP Toolkit, so you can run agents against it safely.

FAQ

Questions about index_workspace

What does the index_workspace tool do? +

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

How do I enforce a policy on index_workspace? +

Register the Portable MCP Toolkit MCP server in PolicyLayer and add a rule for index_workspace: 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 Portable MCP Toolkit. Nothing to install.

What risk level is index_workspace? +

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

Can I rate-limit index_workspace? +

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

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

index_workspace is provided by the Portable MCP Toolkit MCP server (mjdevaccount/aistack-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.