evolve_generation · Event Horizon MCP Server MCP

WHAT IT DOES

What evolve_generation does on Event Horizon MCP Server

AI agents invoke evolve_generation to trigger actions in Event Horizon MCP Server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why evolve_generation needs a policy

This tool executes a genetic algorithm operation (crossover analysis and generation evolution) which constitutes computational execution with side effects—it advances an evolutionary process state. While not destructive, not financial, and potentially reversible (prior generations could exist), it goes beyond simple read operations by performing algorithmic transformations and state transitions.

From the tool's definition Tool description states the tool 'evolve to the next generation using crossover analysis' and 'analyzes the current generation', indicating it performs computational operations that trigger state changes (generation advancement) based on algorithm logic…

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

evolve_generation Rate-limited

evolve_generation stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "evolve_generation": {
      "limits": [
        {
          "counter": "evolve_generation_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Event Horizon MCP Server, so you can run agents against it safely.

FAQ

Questions about evolve_generation

What does the evolve_generation tool do? +

Evolve to the next generation using crossover analysis. This tool analyzes the current generation. It is categorised as a Execute tool in the Event Horizon MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on evolve_generation? +

Register the Event Horizon MCP Server MCP server in PolicyLayer and add a rule for evolve_generation: 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 Event Horizon MCP Server. Nothing to install.

What risk level is evolve_generation? +

evolve_generation is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit evolve_generation? +

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

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

evolve_generation is provided by the Event Horizon MCP Server MCP server (manasp21/eventhorizon). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.