vrm_store · Verified Repo Memory MCP: Risk & Policy

WHAT IT DOES

What vrm_store does on Verified Repo Memory

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

WHY IT NEEDS A POLICY

Why vrm_store needs a policy

vrm_store creates/writes new memory entries with citations into the repository-scoped memory system. This is a reversible write operation (a sibling tool vrm_forget exists for removal). Misuse could lead to storing incorrect or misleading information, but it does not execute code, delete data, or involve finances.

From the tool's definition 'Store a memory with file citations. Snippets are auto-extracted.'

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

vrm_store Rate-limited

vrm_store 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": {
    "vrm_store": {
      "limits": [
        {
          "counter": "vrm_store_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 Verified Repo Memory, so you can run agents against it safely.

FAQ

Questions about vrm_store

What does the vrm_store tool do? +

Store a memory with file citations. Snippets are auto-extracted. It is categorised as a Write tool in the Verified Repo Memory MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on vrm_store? +

Register the Verified Repo Memory MCP server in PolicyLayer and add a rule for vrm_store: 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 Verified Repo Memory. Nothing to install.

What risk level is vrm_store? +

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

Can I rate-limit vrm_store? +

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

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

vrm_store is provided by the Verified Repo Memory MCP server (cognitivemyriad/mcp-verified-repo-memory). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.