codegraph_html · Context MCP: Risk & Policy

WHAT IT DOES

What codegraph_html does on Context

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

WHY IT NEEDS A POLICY

Why codegraph_html needs a policy

This tool generates (creates/writes) an HTML file containing an interactive graph visualization. It produces output artifacts rather than purely reading data, and the creation of files could overwrite existing content. It does not execute code, delete data, or involve financial transactions. Severity is medium because it writes files to the filesystem, which could overwrite existing files if misused.

From the tool's definition Generate interactive vis.js HTML graph visualization

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

codegraph_html Rate-limited

codegraph_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.

View as policy code

policy.json

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

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Context, so you can run agents against it safely.

FAQ

Questions about codegraph_html

What does the codegraph_html tool do? +

Generate interactive vis.js HTML graph visualization. It is categorised as a Write tool in the Context MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on codegraph_html? +

Register the Context MCP server in PolicyLayer and add a rule for codegraph_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 Context. Nothing to install.

What risk level is codegraph_html? +

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

Can I rate-limit codegraph_html? +

Yes. Add a rate_limit block to the codegraph_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 codegraph_html completely? +

Set action: deny in the PolicyLayer policy for codegraph_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 codegraph_html? +

codegraph_html is provided by the Context MCP server (vibhasdutta/context-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.