How to connect Railway to Claude Code

1. 1. Enable Railway in Metorial

   In your Metorial portal, enable the Railway MCP server and sign in with the account that owns the data. Access stays governed by your team policies.

2. 2. Add the server over HTTP

   Add --scope user to use it in every project.

   Copy

   claude mcp add --transport http metorial <your-magic-mcp-url>

3. 3. Sign in

   Run /mcp, select Metorial and sign in to load Railway tools.

• List Environments: List all environments in a Railway project (e.g., production, staging).
• List Deployments: List deployments for a service in a specific environment.
• Create Environment: Create a new environment in a Railway project.
• Update Volume: Rename a persistent storage volume.
• Delete Environment: Permanently delete an environment from a Railway project.
• Rollback Deployment: Roll back a service to a previous deployment.
• Delete Domain: Remove a domain from a Railway service.
• Get Service: Retrieve detailed information about a Railway service, including its environment-specific configuration (build settings, deploy settings, replicas, etc.) when an environment ID is…
• Cancel Deployment: Cancel an in-progress deployment.
• Create Project: Create a new Railway project.
• Update Service: Update a Railway service's metadata (name, icon) and environment-specific settings (build command, start command, replicas, region, health check, etc.).
• Set Variables: Create or update one or more environment variables for a service, or shared variables for an environment when serviceId is omitted.
• Get Domains: List all domains (both Railway-provided and custom) for a service in a specific environment.
• Delete Project: Permanently delete a Railway project and all its services, environments, and deployments.
• Trigger Deployment: Trigger a new deployment for a service in a specific environment.
• And 33 more on the Railway MCP server page.

• Railway tools appear as mcp__metorial__<tool>. Use that name in permission rules to allow or deny a tool.
• Run /mcp to see whether Metorial is connected and to sign in again.
• Claude Code warns when a tool result passes 10,000 tokens and caps it at 25,000 by default. Raise the cap with MAX_MCP_OUTPUT_TOKENS.
• Pre-approve trusted Railway tools with allow rules in your settings so Claude Code stops asking each time.

claude mcp list shows "Needs authentication"

Run /mcp, select Metorial, and sign in. If sign-in keeps failing, choose Clear authentication in the same menu and sign in again.

A teammate sees "Pending approval"

Servers shared through a project .mcp.json need approval. Run claude in the project and approve Metorial when asked.

Large tool results are cut off

Claude Code limits MCP tool output to 25,000 tokens by default. Raise it with the MAX_MCP_OUTPUT_TOKENS environment variable.

Based on the Claude Code MCP documentation.