megaeth_subscribe · Chain Debugger MCP Server MCP

WHAT IT DOES

What megaeth_subscribe does on Chain Debugger MCP Server

AI agents invoke megaeth_subscribe to trigger actions in Chain Debugger 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 megaeth_subscribe needs a policy

Based on the naming pattern consistent with Ethereum JSON-RPC 'eth_subscribe', this tool likely sets up a real-time subscription to blockchain events, which triggers ongoing external operations. The sibling tool 'megaeth_unsubscribe' confirms this is a subscription-based mechanism. Empty description lowers confidence.

From the tool's definition Tool name 'megaeth_subscribe' on a blockchain MCP server; description is empty and uninformative.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

megaeth_subscribe Rate-limited

megaeth_subscribe 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": {
    "megaeth_subscribe": {
      "limits": [
        {
          "counter": "megaeth_subscribe_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 Chain Debugger MCP Server, so you can run agents against it safely.

FAQ

Questions about megaeth_subscribe

What does the megaeth_subscribe tool do? +

megaeth_subscribe. It is categorised as a Execute tool in the Chain Debugger 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 megaeth_subscribe? +

Register the Chain Debugger MCP Server MCP server in PolicyLayer and add a rule for megaeth_subscribe: 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 Chain Debugger MCP Server. Nothing to install.

What risk level is megaeth_subscribe? +

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

Can I rate-limit megaeth_subscribe? +

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

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

megaeth_subscribe is provided by the Chain Debugger MCP Server MCP server (optimusopus/chain-debugger-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.