pr_memory_gate · Claude Flow MCP: Risk & Policy

WHAT IT DOES

What pr_memory_gate does on Claude Flow

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

WHY IT NEEDS A POLICY

Why pr_memory_gate needs a policy

The tool acts as a gate that processes or validates memory entries before they are written to storage. This is a Write operation — it influences what gets persisted. It does not appear to delete data (not Destructive) or execute arbitrary code (not Execute).

From the tool's definition 'Pre-storage coherence gate for memory entries' implies filtering/validating data before it is stored in memory

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

pr_memory_gate Rate-limited

pr_memory_gate 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": {
    "pr_memory_gate": {
      "limits": [
        {
          "counter": "pr_memory_gate_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 Claude Flow, so you can run agents against it safely.

FAQ

Questions about pr_memory_gate

What does the pr_memory_gate tool do? +

Pre-storage coherence gate for memory entries. It is categorised as a Write tool in the Claude Flow MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on pr_memory_gate? +

Register the Claude Flow MCP server in PolicyLayer and add a rule for pr_memory_gate: 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 Claude Flow. Nothing to install.

What risk level is pr_memory_gate? +

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

Can I rate-limit pr_memory_gate? +

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

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

pr_memory_gate is provided by the Claude Flow MCP server (claude-flow). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.