update_saved_symphony · Composer Trade MCP: Risk & Policy

WHAT IT DOES

What update_saved_symphony does on Composer Trade

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

WHY IT NEEDS A POLICY

Why update_saved_symphony needs a policy

This tool modifies saved trading strategies, which are financial instruments. While not directly moving money (Financial category), it alters configuration of automated investing strategies that directly control portfolio actions. The lack of description reduces confidence slightly, but the name and server context clearly indicate Write-category behavior on financial assets.

From the tool's definition Tool is named 'update_saved_symphony' on a financial trading platform (Composer) where symphonies are 'automated investing strategies.' The verb 'update' indicates modification of existing data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_saved_symphony Rate-limited

update_saved_symphony 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_saved_symphony": {
      "limits": [
        {
          "counter": "update_saved_symphony_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 Composer Trade, so you can run agents against it safely.

FAQ

Questions about update_saved_symphony

What does the update_saved_symphony tool do? +

update_saved_symphony. It is categorised as a Write tool in the Composer Trade 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_saved_symphony? +

Register the Composer Trade MCP server in PolicyLayer and add a rule for update_saved_symphony: 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 Composer Trade. Nothing to install.

What risk level is update_saved_symphony? +

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

Can I rate-limit update_saved_symphony? +

Yes. Add a rate_limit block to the update_saved_symphony 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_saved_symphony completely? +

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

update_saved_symphony is provided by the Composer Trade MCP server (tanwithme/composer-trade-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.