ta_bollinger · CG Alpha MCP: Risk & Policy

WHAT IT DOES

What ta_bollinger does on CG Alpha MCP

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

WHY IT NEEDS A POLICY

Why ta_bollinger needs a policy

An AI agent can call ta_bollinger faster than any human can review — one bad instruction and it creates or modifies resources in CG Alpha MCP by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

ta_bollinger Rate-limited

ta_bollinger 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": {
    "ta_bollinger": {
      "limits": [
        {
          "counter": "ta_bollinger_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 CG Alpha MCP, so you can run agents against it safely.

FAQ

Questions about ta_bollinger

What does the ta_bollinger tool do? +

Compute Bollinger Bands (SMA + population stdev). Inputs: values:number[] (oldest→newest), period?:number(20), mult?:number(2). It is categorised as a Write tool in the CG Alpha MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on ta_bollinger? +

Register the CG Alpha MCP server in PolicyLayer and add a rule for ta_bollinger: 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 CG Alpha MCP. Nothing to install.

What risk level is ta_bollinger? +

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

Can I rate-limit ta_bollinger? +

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

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

ta_bollinger is provided by the CG Alpha MCP server (jcf0/cg-alpha-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.