Medium Risk

save_resource

Save AI-generated SVG graphics or Markdown documents to the knowledge graph. This tool must be used in conjunction with get_creation_guidelines and list_graphs tools. Use cases: 1. Save SVG visualization representation of the graph 2. Save Markdown documents related to nodes 3. Batch save multipl...

Risk signalsAccepts raw HTML/template content (content)

Part of the Knowledge Graph Server server.

save_resource can modify Knowledge Graph Server data, with no limits today. PolicyLayer puts allow, deny, and rate-limit rules on every call. Live in minutes.

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AI agents use save_resource to create or modify resources in Knowledge Graph Server. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.

Without a policy, an AI agent could call save_resource repeatedly, creating or modifying resources faster than any human could review. PolicyLayer's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Knowledge Graph Server.

Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "save_resource": {
      "limits": [
        {
          "counter": "save_resource_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

See the full Knowledge Graph Server policy for all 15 tools.

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These attack patterns abuse exactly the kind of access save_resource gives an agent. Each links to the full case and the policy that stops it:

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Every attack above starts with a tool call. PolicyLayer checks each one against your policy first, so save_resource only ever does what you allow.

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Other write tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.

What does the save_resource tool do? +

Save AI-generated SVG graphics or Markdown documents to the knowledge graph. This tool must be used in conjunction with get_creation_guidelines and list_graphs tools. Use cases: 1. Save SVG visualization representation of the graph 2. Save Markdown documents related to nodes 3. Batch save multiple resource files Usage recommendations: 1. First call get_creation_guidelines to get resource creation standards 2. Use list_graphs to get target graph ID and node ID (if needed) 3. Create resource content according to standards 4. Use this tool to save the resource 5. After saving, use get_node_details to check resource association status Return data: - data: Saved resource information * id: Resource ID * type: Resource type (svg/markdown) * title: Resource title * description: Resource description * nodeId: Associated node ID (if any) * createdAt: Creation time. It is categorised as a Write tool in the Knowledge Graph Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on save_resource? +

Register the Knowledge Graph Server MCP server in PolicyLayer and add a rule for save_resource: 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 Knowledge Graph Server. Nothing to install.

What risk level is save_resource? +

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

Can I rate-limit save_resource? +

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

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

save_resource is provided by the Knowledge Graph Server MCP server (aiuluna/knowledge-graph-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Knowledge Graph Server tool call.

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