gepa_select_optimal · Prompt Auto-Optimizer MCP

WHAT IT DOES

What gepa_select_optimal does on Prompt Auto-Optimizer MCP

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

WHY IT NEEDS A POLICY

Why gepa_select_optimal needs a policy

An AI agent can call gepa_select_optimal faster than any human can review — one bad instruction and it creates or modifies resources in Prompt Auto-Optimizer MCP by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

gepa_select_optimal Rate-limited

gepa_select_optimal 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": {
    "gepa_select_optimal": {
      "limits": [
        {
          "counter": "gepa_select_optimal_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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Instant setup, no code required.

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

FAQ

Questions about gepa_select_optimal

What does the gepa_select_optimal tool do? +

Select best prompt candidate for given context. It is categorised as a Write tool in the Prompt Auto-Optimizer 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 gepa_select_optimal? +

Register the Prompt Auto-Optimizer MCP server in PolicyLayer and add a rule for gepa_select_optimal: 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 Prompt Auto-Optimizer MCP. Nothing to install.

What risk level is gepa_select_optimal? +

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

Can I rate-limit gepa_select_optimal? +

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

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

gepa_select_optimal is provided by the Prompt Auto-Optimizer MCP server (sloth-wq/prompt-auto-optimizer-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.