export_visualization_html

Export the vector visualization as a standalone HTML file with modern UI. Automatically saves to file and returns the path. Includes embedded Plotly.js, interactive clusters, and gradient design.

ServerMCP Codebase Index
CategoryWrite

How to control export_visualization_html ↓

WHAT IT DOES

What export_visualization_html does on MCP Codebase Index

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

THE RISK

Medium Risk

Why export_visualization_html needs a policy

This tool generates and persists data (an HTML visualization file) to the filesystem, making it a Write operation rather than Read (it creates new output) or Destructive (the file can be deleted or overwritten without permanent loss). The blast radius is minimal—a misused agent could create unwanted HTML files, wasting storage or cluttering the filesystem, but no critical data is at risk.

From the tool's definition The tool creates and writes a new file to disk ('Automatically saves to file and returns the path'), which is a reversible write operation. The output is a static HTML visualization file with no destructive or irreversible effects.

Documented attack patterns abuse exactly the kind of access export_visualization_html gives an agent:

POLICY

How to control export_visualization_html

PolicyLayer is an MCP gateway — it sits between your AI agents and MCP Codebase Index, and nothing reaches the server without passing your rules. This is the rule we recommend for export_visualization_html:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "export_visualization_html": {
      "limits": [
        {
          "counter": "export_visualization_html_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

export_visualization_html 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.

Create a free account and register MCP Codebase Index — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

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EXPLORE

Related tools and policies

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about export_visualization_html

What does the export_visualization_html tool do? +

Export the vector visualization as a standalone HTML file with modern UI. Automatically saves to file and returns the path. Includes embedded Plotly.js, interactive clusters, and gradient design. It is categorised as a Write tool in the MCP Codebase Index MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on export_visualization_html? +

Register the MCP Codebase Index MCP server in PolicyLayer and add a rule for export_visualization_html: 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 MCP Codebase Index. Nothing to install.

What risk level is export_visualization_html? +

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

Can I rate-limit export_visualization_html? +

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

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

export_visualization_html is provided by the MCP Codebase Index MCP server (ngotaico/mcp-codebase-index). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every MCP Codebase Index tool call.

Start from MCP Codebase Index, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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9 MCP Codebase Index tools catalogued and risk-classified — across an index of 43,000+ MCP servers.