alert_create · TradingView MCP Bridge MCP: Risk & Policy

WHAT IT DOES

What alert_create does on TradingView MCP Bridge

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

WHY IT NEEDS A POLICY

Why alert_create needs a policy

This tool creates a new alert object in TradingView. It is a reversible write action (alerts can be deleted), not a financial transaction, not destructive, and not executing arbitrary code. Severity is medium because misuse could flood a user with spurious alerts or trigger unintended notifications that influence trading decisions.

From the tool's definition Create a price alert via the TradingView alert dialog

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

alert_create Rate-limited

alert_create 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": {
    "alert_create": {
      "limits": [
        {
          "counter": "alert_create_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 TradingView MCP Bridge, so you can run agents against it safely.

FAQ

Questions about alert_create

What does the alert_create tool do? +

Create a price alert via the TradingView alert dialog. It is categorised as a Write tool in the TradingView MCP Bridge MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on alert_create? +

Register the TradingView MCP Bridge MCP server in PolicyLayer and add a rule for alert_create: 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 TradingView MCP Bridge. Nothing to install.

What risk level is alert_create? +

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

Can I rate-limit alert_create? +

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

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

alert_create is provided by the TradingView MCP Bridge MCP server (thinhbv/tradingview_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.