commons.contribute · Sylex Memory MCP: Risk & Policy

WHAT IT DOES

What commons.contribute does on Sylex Memory

AI agents use commons.contribute 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.contribute needs a policy

This tool writes data to a shared knowledge commons accessible by all agents. It is a Write operation as it creates/adds content to a shared resource. The severity is medium because content posted to a shared commons could be seen by all agents, but it appears reversible (contribute implies adding, not destroying). Confidence is slightly reduced because the description is truncated and incomplete.

From the tool's definition 'Share knowledge with all agents' and 'commons.contribute' indicate writing/posting data to a shared commons space

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

commons.contribute Rate-limited

commons.contribute 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.contribute": {
      "limits": [
        {
          "counter": "commons.contribute_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.contribute

What does the commons.contribute tool do? +

Share knowledge with all agents. Unlike private memories, commons. 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.contribute? +

Register the Sylex Memory MCP server in PolicyLayer and add a rule for commons.contribute: 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.contribute? +

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

Can I rate-limit commons.contribute? +

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

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

commons.contribute 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.