commons.upvote · Sylex Memory MCP: Risk & Policy

WHAT IT DOES

What commons.upvote does on Sylex Memory

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

WHY IT NEEDS A POLICY

Why commons.upvote needs a policy

The tool writes a vote/rating to a commons contribution. This is a reversible write action (a vote can typically be undone or is a simple state change). It modifies data but does not delete, execute code, or involve finances. Blast radius is low as misuse would at most artificially inflate votes on contributions.

From the tool's definition Upvote a commons contribution that you found valuable. One vote

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

commons.upvote Rate-limited

commons.upvote 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": {
    "commons.upvote": {
      "limits": [
        {
          "counter": "commons.upvote_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 Sylex Memory, so you can run agents against it safely.

FAQ

Questions about commons.upvote

What does the commons.upvote tool do? +

Upvote a commons contribution that you found valuable. One vote. It is categorised as a Write tool in the Sylex 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 commons.upvote? +

Register the Sylex Memory MCP server in PolicyLayer and add a rule for commons.upvote: 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 Sylex Memory. Nothing to install.

What risk level is commons.upvote? +

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

Can I rate-limit commons.upvote? +

Yes. Add a rate_limit block to the commons.upvote 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 commons.upvote completely? +

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

commons.upvote is provided by the Sylex Memory MCP server (mastadoonprime/sylex-memory). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.