update_chart_data

Replace data series in an existing chart by chart_id.

SERVERDocx SOURCEsecurityronin/docx-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/securityronin-docx-mcp/update-chart-data.md

WHAT IT DOES

What update_chart_data does on Docx

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

RISK

Why update_chart_data is rated Medium

This tool creates or modifies data reversibly within a Word document—it updates chart data but does not delete the chart or data irreversibly. The modification is contained to the chart's data series and can be undone (Word tracks changes and maintains undo history). This is a write operation rather than destructive because it modifies rather than deletes, and the document remains intact.

From the tool's definition The tool 'update_chart_data' replaces data series in an existing chart by chart_id. The verb 'replace' and the action of modifying chart data indicates a write operation that modifies document content.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs update_chart_data safely

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

update_chart_data Rate-limited

update_chart_data 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": {
    "update_chart_data": {
      "limits": [
        {
          "counter": "update_chart_data_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 Docx, apply this rule, and every update_chart_data call is checked against it from then on.

FAQ

Questions about update_chart_data

What does the update_chart_data tool do? +

Replace data series in an existing chart by chart_id. It is categorised as a Write tool in the Docx MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on update_chart_data? +

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

What risk level is update_chart_data? +

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

Can I rate-limit update_chart_data? +

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

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

update_chart_data is provided by the Docx MCP server (securityronin/docx-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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