memvid_binding · Memvid MCP: Risk & Policy

WHAT IT DOES

What memvid_binding does on Memvid

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

WHY IT NEEDS A POLICY

Why memvid_binding needs a policy

The tool supports two operations: 'show' (Read) and 'unbind' (Write/potentially Destructive). Since unbinding removes an association, it modifies state, but bindings can likely be re-created, making it reversible Write rather than Destructive. The most severe applicable category across the tool's operations is Write.

From the tool's definition 'unbind: Remove the current binding' — modifying/removing an association between memory files and contexts

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

memvid_binding Rate-limited

memvid_binding 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": {
    "memvid_binding": {
      "limits": [
        {
          "counter": "memvid_binding_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 Memvid, so you can run agents against it safely.

FAQ

Questions about memvid_binding

What does the memvid_binding tool do? +

Memory binding operations - show or unbind. Bindings associate memory files with specific contexts or agents. Args: file: Path to the .mv2 memory file show: Show current binding information unbind: Remove the current binding Returns: Binding status or operation confirmation. It is categorised as a Write tool in the Memvid MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on memvid_binding? +

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

What risk level is memvid_binding? +

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

Can I rate-limit memvid_binding? +

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

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

memvid_binding is provided by the Memvid MCP server (tapiocapioca/memvid-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.