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PaaS deployment MCP servers compared

Platform-as-a-service deployment MCP servers that let Claude ship and manage apps, compared on trust, setup, and safety.

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Fly.io MCP Server for Claude

Manage Fly.io applications, machines, volumes, secrets, certificates, and organizations from Claude — with the official Fly.io MCP server built into the flyctl CLI.

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Railway MCP Server for Claude

Manage Railway projects, services, deployments, and environments from Claude — create projects, deploy templates, pull variables, trigger redeployments, and more — with the official Railway MCP server built into the Railway CLI.

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Install riskReview firstReview first
Notes Safety ✓ Privacy ✓ Safety ✓ Privacy ✓
Brand——
Categorymcpmcp
Sourcesource-backedsource-backed
AuthorFly.ioRailway
Added2026-06-182026-06-18
Platforms
Claude CodeClaude Desktop
Claude CodeClaude Desktop
Source repo——
Safety notes✓The Fly.io MCP server runs locally with full access to your authenticated Fly.io account — it can create, delete, and modify apps, machines, and secrets. Fly.io warns that running the server remotely can give others access to run commands on your behalf; keep it bound to localhost unless you intend remote access. Destructive operations (machine deletion, secret updates) are available — review Claude's proposed commands before executing in production environments.✓The Railway CLI MCP server runs as a local stdio process with full access to your authenticated Railway account — it can create, delete, and modify projects and services. Use Railway's environment scoping and project permissions to limit blast radius; avoid running the MCP server under an account with access to production environments unless intentional. A remote option (`--remote`) routes requests through `mcp.railway.com`; prefer local stdio if you prefer to keep credentials on-device.
Privacy notes✓App names, machine IDs, secret names (not values unless explicitly requested), and log content may be surfaced into Claude's context. Fly.io API tokens (`FLY_ACCESS_TOKEN`) grant full account access — store them in your environment, not in repositories.✓Railway commands may expose environment variable names and values from your projects into the Claude context; treat these as secrets. The Railway CLI authenticates via stored tokens — keep your Railway account credentials secure.
Prerequisites
  • flyctl installed — see fly.io/docs/flyctl/install/ (Homebrew: `brew install flyctl`)
  • Logged in to Fly.io: `fly auth login`
  • Or set `FLY_ACCESS_TOKEN` environment variable for headless/CI use.
  • An MCP client such as Claude Code or Claude Desktop.
  • Railway CLI installed: `npm i -g @railway/cli` (or `brew install railway` on macOS).
  • Logged in to Railway: `railway login`
  • An MCP client such as Claude Code or Claude Desktop.
Install
fly mcp server --claude
railway mcp install --agent claude-code
Config
{
  "mcpServers": {
    "fly": {
      "command": "fly",
      "args": ["mcp", "server"]
    }
  }
}
{
  "mcpServers": {
    "railway": {
      "command": "railway",
      "args": ["mcp"]
    }
  }
}
Citations
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