mp_add_synchronizer

SERVERBreakpoint SOURCEbreakpoint-mcp

Medium RISK CLASS

Category Write

Parameters 51 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/breakpoint-mcp/mp-add-synchronizer.md

WHAT IT DOES

What mp_add_synchronizer does on Breakpoint

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

Parameter	Type	Required	Description
`name`	string	—	Node name (default MultiplayerSynchronizer)
`root_path`	string	—	NodePath the replicated property paths are relative to (default "..")
`properties`	array	—	Property NodePaths to replicate, e.g. [".:position", ".:rotation"]
`parent_path`	string	Yes	Parent node path relative to the scene root; "." for the root
`replication_mode`	string	—	Replication mode for the properties (default always)

Parameters from the server's own tool schema.

RISK

Why mp_add_synchronizer is rated Medium

This tool creates and modifies scene nodes and replication configuration in what appears to be a game engine (likely Godot based on the node/scene terminology). It does not execute external commands, run arbitrary code, or delete data irreversibly. The 'undoable' designation confirms reversibility.

From the tool's definition Tool description states it can 'Add a MultiplayerSynchronizer node under a parent (undoable)' and 'build a SceneReplicationConfig that replicates them.' The term 'undoable' indicates reversible modification of scene structure and configuration.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs mp_add_synchronizer safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Breakpoint, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For mp_add_synchronizer, this is the rule to start with:

mp_add_synchronizer Rate-limited

mp_add_synchronizer 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": {
    "mp_add_synchronizer": {
      "limits": [
        {
          "counter": "mp_add_synchronizer_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Breakpoint, apply this rule, and every mp_add_synchronizer call is checked against it from then on.

FAQ

Questions about mp_add_synchronizer

What does the mp_add_synchronizer tool do? +

Add a MultiplayerSynchronizer node under a parent (undoable) and, if properties are given, build a SceneReplicationConfig that replicates them. root_path is the node the property NodePaths are relative to (default "..", the synchronizer's parent). Property paths look like ".:position" or "Sprite2D:rotation". Pure node authoring — no service is started. It is categorised as a Write tool in the Breakpoint MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does mp_add_synchronizer accept? +

mp_add_synchronizer accepts 5 parameters: name, root_path, properties, parent_path, replication_mode. Required: parent_path. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on mp_add_synchronizer? +

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

What risk level is mp_add_synchronizer? +

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

Can I rate-limit mp_add_synchronizer? +

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

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

mp_add_synchronizer is provided by the Breakpoint MCP server (breakpoint-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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