railway_redeploy · Railway MCP Server MCP: Risk & Policy

WHAT IT DOES

What railway_redeploy does on Railway MCP Server

AI agents invoke railway_redeploy to trigger actions in Railway 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 railway_redeploy needs a policy

This tool executes a redeploy operation, which triggers a build and deploy pipeline for a service. Redeploying is an active operation that causes external effects (container rebuild, service restart, potential downtime, resource consumption) whose success depends on the environment and service state.

From the tool's definition Trigger a full redeploy (rebuild + deploy) for a service in an environment. Uses the existing source and config.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

railway_redeploy Rate-limited

railway_redeploy 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": {
    "railway_redeploy": {
      "limits": [
        {
          "counter": "railway_redeploy_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 Railway MCP Server, so you can run agents against it safely.

FAQ

Questions about railway_redeploy

What does the railway_redeploy tool do? +

Trigger a full redeploy (rebuild + deploy) for a service in an environment. Uses the existing source and config. It is categorised as a Execute tool in the Railway 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 railway_redeploy? +

Register the Railway MCP Server MCP server in PolicyLayer and add a rule for railway_redeploy: 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 Railway MCP Server. Nothing to install.

What risk level is railway_redeploy? +

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

Can I rate-limit railway_redeploy? +

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

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

railway_redeploy is provided by the Railway MCP Server MCP server (travis-gilbert/railway-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.