sync_all_mcps

THE RISK

Medium Risk

Why sync_all_mcps needs a policy

Synchronizing state across multiple MCP systems (Memory, Filesystem, Git, Database) involves writing/updating data in each of those systems to bring them into a consistent state. This is a Write operation with high severity because a misbehaving sync could propagate incorrect or stale state across all integrated systems simultaneously, with broad blast radius.

From the tool's definition 'Synchronize state across all integrated MCPs' — coordinates writes across Memory, Filesystem, Git, and Database MCPs

Documented attack patterns abuse exactly the kind of access sync_all_mcps gives an agent:

POLICY

How to control sync_all_mcps

PolicyLayer is an MCP gateway — it sits between your AI agents and MCP Conductor, and nothing reaches the server without passing your rules. This is the rule we recommend for sync_all_mcps:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "sync_all_mcps": {
      "limits": [
        {
          "counter": "sync_all_mcps_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

sync_all_mcps 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.

Create a free account and register MCP Conductor — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

LIMIT THIS TOOL →

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EXPLORE

Related tools and policies

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All 25 MCP Conductor tools →

Write tools on other servers

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about sync_all_mcps

What does the sync_all_mcps tool do? +

Synchronize state across all integrated MCPs. It is categorised as a Write tool in the MCP Conductor MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on sync_all_mcps? +

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

What risk level is sync_all_mcps? +

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

Can I rate-limit sync_all_mcps? +

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

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

sync_all_mcps is provided by the MCP Conductor MCP server (lutherscottgarcia/mcp-conductor). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every MCP Conductor tool call.

Start from MCP Conductor, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →