lens_acknowledge · Lens MCP: Risk & Policy

WHAT IT DOES

What lens_acknowledge does on Lens

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

WHY IT NEEDS A POLICY

Why lens_acknowledge needs a policy

The tool updates an annotation's status from pending to acknowledged, which is a reversible modification of data. It does not delete data (not Destructive), execute arbitrary code (not Execute), move money (not Financial), or merely read data (not Read).

From the tool's definition Tool description states it 'Acknowledge an annotation (set status to acknowledged)', which modifies the status of an annotation. This is a write operation that changes data state.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

lens_acknowledge Rate-limited

lens_acknowledge 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": {
    "lens_acknowledge": {
      "limits": [
        {
          "counter": "lens_acknowledge_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 Lens, so you can run agents against it safely.

FAQ

Questions about lens_acknowledge

What does the lens_acknowledge tool do? +

Acknowledge an annotation (set status to acknowledged). It is categorised as a Write tool in the Lens MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on lens_acknowledge? +

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

What risk level is lens_acknowledge? +

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

Can I rate-limit lens_acknowledge? +

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

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

lens_acknowledge is provided by the Lens MCP server (renderdraw/lens). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.