update-proxy · TgeBrowser MCP Server MCP: Risk & Policy

WHAT IT DOES

What update-proxy does on TgeBrowser MCP Server

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

WHY IT NEEDS A POLICY

Why update-proxy needs a policy

This tool modifies proxy configuration settings, which is a Write operation—it changes state but is reversible (the proxy can be updated again or reverted). The severity is medium because misconfiguration could redirect traffic or cause connectivity issues, but it does not delete data (Destructive), execute arbitrary code (Execute), or move money (Financial).

From the tool's definition Tool name is 'update-proxy' with description 'Update an existing proxy configuration'. The verb 'update' indicates modification of existing data (proxy settings) in a reversible manner.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update-proxy Rate-limited

update-proxy 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-proxy": {
      "limits": [
        {
          "counter": "update-proxy_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 TgeBrowser MCP Server, so you can run agents against it safely.

FAQ

Questions about update-proxy

What does the update-proxy tool do? +

Update an existing proxy configuration. It is categorised as a Write tool in the TgeBrowser MCP 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 update-proxy? +

Register the TgeBrowser MCP Server MCP server in PolicyLayer and add a rule for update-proxy: 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 TgeBrowser MCP Server. Nothing to install.

What risk level is update-proxy? +

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

Can I rate-limit update-proxy? +

Yes. Add a rate_limit block to the update-proxy 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-proxy completely? +

Set action: deny in the PolicyLayer policy for update-proxy. 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-proxy? +

update-proxy is provided by the TgeBrowser MCP Server MCP server (tuguang2025/tgebrowser-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.