Create a snapshot (backup) of a project.
AI agents use gns3_create_snapshot to create or update resources in GNS3 Network Simulator MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your GNS3 Network Simulator MCP Server environment.
Creating a snapshot is a reversible write operation—it creates a backup copy of project state without modifying or deleting existing data. The action is non-destructive and beneficial for safety. Severity is low because backups are generally safe; misuse would only waste storage or create unwanted backup copies, with no impact on the actual simulation or system state.
From the tool's definition Tool name 'gns3_create_snapshot' and description 'Create a snapshot (backup) of a project' indicate creation of a backup artifact. The verb 'create' and explicit mention of 'snapshot (backup)' confirm this is a write operation that generates new data.
Documented attack patterns abuse exactly the kind of access gns3_create_snapshot gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and GNS3 Network Simulator MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for gns3_create_snapshot:
{
"version": "1",
"default": "deny",
"tools": {
"gns3_create_snapshot": {
"limits": [
{
"counter": "gns3_create_snapshot_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}gns3_create_snapshot 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.
Free to start. No card required.
Create a snapshot (backup) of a project. It is categorised as a Write tool in the GNS3 Network Simulator MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the GNS3 Network Simulator MCP Server MCP server in PolicyLayer and add a rule for gns3_create_snapshot: 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 GNS3 Network Simulator MCP Server. Nothing to install.
gns3_create_snapshot is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the gns3_create_snapshot 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.
Set action: deny in the PolicyLayer policy for gns3_create_snapshot. 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.
gns3_create_snapshot is provided by the GNS3 Network Simulator MCP Server MCP server (wael-rd/gns3-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from GNS3 Network Simulator MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
42 GNS3 Network Simulator MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.