Can I use Railway as a CLI?

Yes. KosmoKrator exposes a Railway CLI through kosmo integrations:call and the provider shortcut command. Commands can return JSON for scripts, CI, and coding agents.

Can I expose Railway through MCP?

Yes. The KosmoKrator MCP gateway can expose selected Railway tools to clients such as Claude Code, Cursor, Codex, and other MCP-compatible tools.

Where are Railway credentials stored?

Railway credentials are configured in KosmoKrator's local integration settings and reused by CLI, Lua, and MCP gateway surfaces.

Can I deny write access for Railway MCP tools?

Yes. Start the gateway with --write=deny for read-only clients, or use ask/allow only for trusted workspaces.

productivity

Railway MCP Integration for LangChain

Connect Railway to LangChain through the local KosmoKrator MCP gateway with scoped tools, credentials, and write policy.

7 functions 6 read 1 write Bearer token auth

Submit Railway feedback View package source

Connect Railway to LangChain

Bridge LangChain agents to local KosmoKrator integration tools through MCP or headless CLI calls.

Use the MCP gateway when the agent should discover tools, or wrap kosmo integrations:call for fixed chains. The gateway is local, scoped to this integration, and starts with --write=deny so LangChain can inspect read-capable tools without receiving write access by default.

Railway MCP Config for LangChain

Keep the gateway scoped to the integration and operation class needed by the chain.

{
  "mcpServers": {
    "kosmokrator-railway": {
      "type": "stdio",
      "command": "kosmo",
      "args": [
        "mcp:serve",
        "--integration=railway",
        "--write=deny"
      ]
    }
  }
}

Run the Gateway Manually

kosmokrator mcp:serve --integration=railway --write=deny

Why Use KosmoKrator Here

Scoped tools

Expose only Railway instead of a broad multi-service tool list.

Local credentials

Reuse credentials already configured for the KosmoKrator CLI and Lua runtime.

Write policy

Start read-only, then opt into ask or allow for trusted workspaces.

Railway Tools Visible to LangChain

LangChain sees stable MCP tool names generated from the Railway integration catalog.

MCP tool	Source function	Type	Description
`integration__railway__railway_list_projects`	`railway.railway_list_projects`	Read	List all Railway projects the authenticated user has access to. Returns project IDs, names, descriptions, and team info.
`integration__railway__railway_get_project`	`railway.railway_get_project`	Read	Get detailed information about a specific Railway project, including its environments and plugins.
`integration__railway__railway_create_project`	`railway.railway_create_project`	Write	Create a new Railway project with a name and optional description.
`integration__railway__railway_list_services`	`railway.railway_list_services`	Read	List all services in a Railway project. Returns service IDs, names, and repository info.
`integration__railway__railway_get_service`	`railway.railway_get_service`	Read	Get detailed information about a specific Railway service, including its source configuration and repository details.
`integration__railway__railway_list_deployments`	`railway.railway_list_deployments`	Read	List deployments for a Railway service. Returns deployment status, environment, and creator info.
`integration__railway__railway_get_current_user`	`railway.railway_get_current_user`	Read	Get information about the currently authenticated Railway user. Useful for verifying API credentials.

Related Railway Pages

Railway CLIUse direct JSON commands instead of MCP discovery. Railway MCPFull gateway reference and MCP tool names. KosmoKrator for LangChainClient-level gateway setup.