streaming-export · MCP Index Notes MCP: Risk & Policy

WHAT IT DOES

What streaming-export does on MCP Index Notes

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

WHY IT NEEDS A POLICY

Why streaming-export needs a policy

While export operations are often read-only from a database perspective, the act of generating and writing exported files in transformed formats constitutes data creation. The tool doesn't delete or modify the original notes (which would be Destructive), nor does it execute arbitrary code (Execute), but it does create new data outputs. The streaming aspect and progress tracking indicate a substantive operation.

From the tool's definition The tool performs 'export' of notes and images with 'format transformation', which creates new data artifacts (exported files) even though the source notes remain unchanged. This is a data creation/output operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

streaming-export Rate-limited

streaming-export 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": {
    "streaming-export": {
      "limits": [
        {
          "counter": "streaming-export_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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Instant setup, no code required.

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

FAQ

Questions about streaming-export

What does the streaming-export tool do? +

Stream export of notes and images with format transformation and progress tracking. It is categorised as a Write tool in the MCP Index Notes MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on streaming-export? +

Register the MCP Index Notes MCP server in PolicyLayer and add a rule for streaming-export: 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 Index Notes. Nothing to install.

What risk level is streaming-export? +

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

Can I rate-limit streaming-export? +

Yes. Add a rate_limit block to the streaming-export 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 streaming-export completely? +

Set action: deny in the PolicyLayer policy for streaming-export. 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 streaming-export? +

streaming-export is provided by the MCP Index Notes MCP server (vjsr007/mcp-index-notes). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.