# export_topology_diagram

Export topology diagram to SVG/PNG files on disk. For agents: use diagrams://{project_id}/topology resource for direct access without saving files.

Agent View of the PolicyLayer registry record for `export_topology_diagram`. HTML page: https://policylayer.com/tools/chistokhinsv-gns3-mcp/export-topology-diagram

## Facts

- Tool: `export_topology_diagram`
- Server: GNS3 MCP Server (`chistokhinsv/gns3-mcp`) — https://policylayer.com/tools/chistokhinsv-gns3-mcp.md
- Homepage: https://github.com/ChistokhinSV/gns3-mcp
- Risk category: Write (Medium risk)
- Registry record: grade B, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "export_topology_diagram",
    "arguments": {}
  }
}
```

## Why export_topology_diagram is rated Medium

This tool creates new files on the filesystem, which is a Write operation that modifies system state. While file export itself is reversible (files can be deleted), it does write data to disk and occupies storage resources.

From the tool's own definition: "Tool exports and saves topology diagram files to disk in SVG/PNG formats. The description explicitly states 'Export topology diagram to SVG/PNG files on disk', indicating file creation/writing operations."

## Use case

AI agents use export_topology_diagram to create or update resources in GNS3 MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your GNS3 MCP Server environment.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches GNS3 MCP Server:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "export_topology_diagram": {
      "limits": [
        {
          "counter": "export_topology_diagram_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on GNS3 MCP Server (15)

- `console` — Execute — https://policylayer.com/tools/chistokhinsv-gns3-mcp/console.md
- `http_client` — Execute — https://policylayer.com/tools/chistokhinsv-gns3-mcp/http-client.md
- `node` — Execute — https://policylayer.com/tools/chistokhinsv-gns3-mcp/node.md
- `ssh` — Execute — https://policylayer.com/tools/chistokhinsv-gns3-mcp/ssh.md
- `drawing` — Other — https://policylayer.com/tools/chistokhinsv-gns3-mcp/drawing.md
- `gns3_connection` — Other — https://policylayer.com/tools/chistokhinsv-gns3-mcp/gns3-connection.md
- `link` — Other — https://policylayer.com/tools/chistokhinsv-gns3-mcp/link.md
- `my_tool` — Other — https://policylayer.com/tools/chistokhinsv-gns3-mcp/my-tool.md
- `node_file` — Other — https://policylayer.com/tools/chistokhinsv-gns3-mcp/node-file.md
- `project` — Other — https://policylayer.com/tools/chistokhinsv-gns3-mcp/project.md
- `tftp` — Other — https://policylayer.com/tools/chistokhinsv-gns3-mcp/tftp.md
- `notification` — Read — https://policylayer.com/tools/chistokhinsv-gns3-mcp/notification.md
- `project_docs` — Read — https://policylayer.com/tools/chistokhinsv-gns3-mcp/project-docs.md
- `query_resource` — Read — https://policylayer.com/tools/chistokhinsv-gns3-mcp/query-resource.md
- `search_tools` — Read — https://policylayer.com/tools/chistokhinsv-gns3-mcp/search-tools.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=chistokhinsv-gns3-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/chistokhinsv-gns3-mcp