# How to connect Railway MCP to Claude

```json
{
  "title": "How to connect Railway MCP to Claude",
  "toolkit": "Railway MCP",
  "toolkit_slug": "railway_mcp",
  "framework": "Claude Cowork",
  "framework_slug": "claude-cowork",
  "url": "https://composio.dev/toolkits/railway_mcp/framework/claude-cowork",
  "markdown_url": "https://composio.dev/toolkits/railway_mcp/framework/claude-cowork.md",
  "updated_at": "2026-08-25T05:33:47.803Z"
}
```

## Introduction

Claude is Anthropic's AI assistant, available on the web, in the desktop app, and on mobile. Cowork is its agent for knowledge work, and it runs on all of those surfaces too. Connected to your apps, Claude can work with your files and services to accomplish complex tasks on your behalf.
This guide walks you through the easiest and most secure way to connect your Railway account to Claude via Composio Connect, enabling it to deploy latest commit to production service, list all services and environment variables, create staging environment and deploy service, and more such actions on your behalf without compromising your account security.
Setup is the same on Claude Web, Desktop, and Cowork, and you only need to do it once. The connector is tied to your account, so it's available in all three.

## Also integrate Railway MCP with

- [ChatGPT Work](https://composio.dev/toolkits/railway_mcp/framework/chatgpt)
- [Hermes](https://composio.dev/toolkits/railway_mcp/framework/hermes-agent)

## Connect Railway MCP to Claude Cowork

### Connecting Railway to Claude Web, Desktop, and Cowork
1. Open Customize
In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top.
2. Add the Composio MCP server
Click Add custom connector and paste in the Composio MCP server URL:

```bash
https://connect.composio.dev/mcp
```

## What is the Railway MCP server, and what's possible with it?

The Railway MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Railway account. It provides structured and secure access so your agent can perform Railway operations on your behalf.

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `RAILWAY_MCP_ACCEPT_DEPLOY` | Accept-deploy | DESTRUCTIVE: Commits all staged changes in a Railway environment and triggers a deploy. Only use this when the user has explicitly confirmed they want to deploy. |
| `RAILWAY_MCP_CREATE_DEPLOYMENT` | Create-deployment | Create a new service from a GitHub repository and trigger its first deployment. The repo must be one the authenticated user has connected via GitHub. Returns the new service; use get-status or list-deployments to follow the deploy. Before calling this tool you MUST have a GitHub repo to deploy. If the user has not provided one, do not guess — first ask them which GitHub repo to deploy (in 'owner/name' form). If they don't have a repo yet, offer to help create one: if you have tools available to create a GitHub repository (e.g. a GitHub MCP server or `gh` CLI), offer to scaffold and push one for them; otherwise point them to create a repo on GitHub and share its 'owner/name'. Only call this tool once a concrete repo has been confirmed. |
| `RAILWAY_MCP_CREATE_PROJECT` | Create-project | Create a new Railway project |
| `RAILWAY_MCP_CREATE_SERVICE` | Create-service | Create a new service in a project from a Docker image, or an empty service to configure later (e.g. before setting variables and attaching a source). To create a service from a GitHub repository, use create-deployment instead. |
| `RAILWAY_MCP_DELETE_FEATURE_FLAG` | Delete-feature-flag | Delete a project-scoped feature flag. Workspace-scoped flags cannot be deleted from project context. |
| `RAILWAY_MCP_FETCH_DOCS` | Fetch-docs | Fetch the full markdown content of a Railway documentation page by URL or slug (e.g. 'https://docs.railway.com/quick-start' or 'reference/variables'). Use search-docs first to find the right page. |
| `RAILWAY_MCP_GENERATE_DOMAIN` | Generate-domain | Expose a service publicly. Without `domain`, generates a Railway *.up.railway.app service domain (if the service already has domains, they are returned instead of creating another). With `domain`, attaches a custom domain you own and returns the DNS records the user must create for it to verify. If environmentId is omitted, the production environment is used. |
| `RAILWAY_MCP_GET_FEATURE_FLAG` | Get-feature-flag | Get a Railway feature flag (Signal) by name for a project or its parent workspace scope. |
| `RAILWAY_MCP_GET_LOGS` | Get-logs | Get logs from Railway for a deployment — covers deploy (runtime), build, and http (proxy request) contexts. Pass a specific deploymentId, or pass serviceId + environmentId to resolve the latest deployment. Use `types` to choose which streams to return (default: ['deploy']). |
| `RAILWAY_MCP_GET_SERVICE_CONFIG` | Get-service-config | Get a service's configuration in an environment: source (repo/image), build settings, deploy settings (start command, healthcheck, replicas, cron, restart policy), networking, and volume mounts. Variable names are listed but values are not included — use list-variables for values. If environmentId is omitted, the production environment is used. |
| `RAILWAY_MCP_GET_SERVICE_METRICS` | Get-service-metrics | Get resource usage metrics (CPU, memory, disk, network) for a service, summarized as current/average/min/max over a time window. Defaults to CPU_USAGE and MEMORY_USAGE_GB over the last hour. If environmentId is omitted, the production environment is used. |
| `RAILWAY_MCP_GET_STATUS` | Get-status | Get the deployment status of a Railway project environment. Returns project + environment metadata and, for each service in the environment, its latest deployment status, replica count, and cron schedule. If environmentId is omitted, the project's `production` environment is used when present, otherwise the oldest environment. |
| `RAILWAY_MCP_LIST_DEPLOYMENTS` | List-deployments | List recent deployments for a Railway project, optionally filtered by environment, service, or status. Returns the most recent first. |
| `RAILWAY_MCP_LIST_DOMAINS` | List-domains | List all domains (Railway-generated service domains and custom domains) for a service in an environment. If environmentId is omitted, the production environment is used. |
| `RAILWAY_MCP_LIST_FEATURE_FLAGS` | List-feature-flags | List Railway feature flags (Signals) for a project and optionally the parent workspace. Project flags are editable with admin access; workspace flags are read-only from project context. |
| `RAILWAY_MCP_LIST_PROJECTS` | List-projects | List all Railway projects accessible to the authenticated user |
| `RAILWAY_MCP_LIST_SERVICES` | List-services | List all services and environments in a Railway project |
| `RAILWAY_MCP_LIST_VARIABLES` | List-variables | List all environment variables for a service, fully rendered (reference variables like ${{Postgres.DATABASE_URL}} are resolved). With a Railway session or API token, values are returned in plaintext and may contain secrets. Connected OAuth apps receive variable names only. If environmentId is omitted, the production environment is used. |
| `RAILWAY_MCP_LIST_WORKSPACES` | List-workspaces | List the Railway workspaces the current user belongs to. Use a workspace ID with create-project to choose where a project is created. |
| `RAILWAY_MCP_RAILWAY_AGENT` | Railway-agent | Send a message to Railway's AI agent for complex infrastructure operations. The agent can inspect services, diagnose issues, and take actions on your behalf. |
| `RAILWAY_MCP_REDEPLOY` | Redeploy | Re-run the most recent deployment of a service in a given environment, reusing that deployment's existing build. Only works on a service that has already deployed in that environment — check with list-deployments if you are unsure. This does NOT give a service its first deployment: if it has never deployed, nothing here can deploy it, and create-deployment would build a separate new service from a GitHub repo rather than deploying this one. |
| `RAILWAY_MCP_SEARCH_DOCS` | Search-docs | Search the Railway documentation (docs.railway.com) for features, configuration, guides, and tutorials. Returns matching sections with URLs — use fetch-docs to read a full page. |
| `RAILWAY_MCP_SET_FEATURE_FLAG` | Set-feature-flag | Create a project-scoped feature flag or update its default value. Use list-feature-flags and get-feature-flag to inspect existing flags first. |
| `RAILWAY_MCP_SET_VARIABLES` | Set-variables | Set one or more environment variables on a service (or environment-wide shared variables when serviceId is omitted). Existing variables with the same name are overwritten; others are left unchanged. Reference syntax like ${{Postgres.DATABASE_URL}} is supported. Affected services are redeployed unless skipDeploys is true. |
| `RAILWAY_MCP_UPDATE_SERVICE` | Update-service | Update a service's configuration: build/start/pre-deploy commands, healthcheck, sleep mode, root directory, cron schedule, Dockerfile path, restart policy, config file path, and watch patterns. Only the fields you pass are changed. Changes apply on the service's next deployment (use redeploy to apply immediately). Scaling (replicas/regions) and source changes are not handled by this tool. |
| `RAILWAY_MCP_WHOAMI` | Whoami | Get the current authenticated Railway user's profile information |

## Supported Triggers

None listed.

## Troubleshooting

### 1. Why does Claude not use the Composio connector for Railway?

The connector can show as connected, but Claude must use it in each Railway conversation.
- Click + at the lower left of the chat, or type /.
- Hover Connectors.
- Turn on Composio.
- Ask Claude to connect to Railway again.

### 2. Why does Claude show an MCP server error before Railway connects?

Claude can show Couldn't reach the MCP server or Authorization with the MCP server failed when you add the connector for Railway.
- Check that the connector URL is https://connect.composio.dev/mcp.
- Connectors run from Anthropic's cloud, so your device network is usually not the problem.
- Add the connector again from Customize > Connectors, then ask Claude to connect Railway.
- If it fails again, send the error and the ofid_ reference id to support@composio.dev.

### 3. Why does the Railway authorization link not work?

The Composio connector is one server. Your Railway account connects separately when Claude asks for it.
- If the browser does not open, or the link expires, ask Claude to retry the Railway connection.
- Composio creates a fresh Railway authorization link.
- Open that link in your browser and finish the Railway sign-in.

### 4. Why do Railway actions fail after they worked before?

The Railway connection can expire or lose permission.
- Ask Claude to inspect the Railway connection.
- If the connection is unhealthy, disconnect it when Claude prompts you.
- Reconnect the Railway account and retry the action.
- If Claude shows a permission prompt, approve it before Claude changes data in Railway.
- If the action still fails with a permission error, check that the connected account has that permission in Railway itself.

### 5. How do I switch to a different Railway account?

Claude can manage the Railway connection for you.
- Ask Claude to disconnect or delete the current Railway account.
- Ask Claude to connect Railway again.
- Open the new Composio authorization link for Railway.
- Sign in with the other Railway account in the browser.
- After the account connects, ask Claude to retry the Railway task.

### 6. Why is my Railway connection missing in Claude Desktop or on a Team plan?

The connector belongs to your Claude account, so your Railway connection works in Claude Web, Desktop, and Cowork.
- In Claude Desktop, open Customize > Connectors.
- Next to Composio, click ⋮ and click Clear cache.
- If Railway tools still do not appear, click ⋮, disconnect, remove the connector, and add it again.
- On Team or Enterprise, an Owner or Primary Owner must enable the connector before you can connect Railway.

## Creating MCP Server - Stand-alone vs Composio SDK

The Railway MCP server connects Claude Web, Desktop, and Cowork to your Railway account through Composio. Once connected, Claude can use the available Railway tools and triggers to complete tasks on your behalf.

## Complete Code

None listed.

## How to build Railway MCP Agent with another framework

- [ChatGPT Work](https://composio.dev/toolkits/railway_mcp/framework/chatgpt)
- [Hermes](https://composio.dev/toolkits/railway_mcp/framework/hermes-agent)

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## Frequently Asked Questions

### What are the differences in Tool Router MCP and Railway MCP?

With a standalone Railway MCP server, the agents and LLMs can only access a fixed set of Railway tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Railway and many other apps based on the task at hand, all through a single MCP endpoint.

### Can I use Tool Router MCP with Claude Cowork?

Yes, you can. Claude Cowork fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Railway tools.

### Can I manage the permissions and scopes for Railway while using Tool Router?

Yes, absolutely. You can configure which Railway scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

### How safe is my data with Composio Tool Router?

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Railway data and credentials are handled as safely as possible.

---
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