# Silkroad MCP

Silkroad MCP is a multilingual discovery hub for MCP servers, reusable components, and implementation blueprints.

## Beginner guides
- [Set up China Rail MCP](/silkroad-mcp/en/guides/china-rail/): A beginner-friendly path from choosing a client to proving that a real railway query works. You do not need a 12306 account or programming experience.

## Projects
- [China Rail MCP](/silkroad-mcp/en/projects/china-rail/): Search China Railway stations, trains, fares, and seat availability.
- [ColorOS Calendar Bridge](/silkroad-mcp/en/projects/coloros-calendar/): An experimental bridge between Android CalendarContract, CalDAV, and MCP.
- [iCloud Mail MCP](/silkroad-mcp/en/projects/icloud-mail/): A private, safety-first iCloud Mail MCP implementation with a public blueprint.
- [QQ Mail MCP](/silkroad-mcp/en/projects/qq-mail/): A private QQ Mail MCP implementation built on a reusable secure-mail design.

## MCP clients
- [Client compatibility guide](/silkroad-mcp/en/clients/): account, plan, transport, and official-source requirements checked 2026-09-03.
- ChatGPT: Pro supports custom read/fetch MCP connections. Full MCP, including write actions, requires Business, Enterprise, or Edu and workspace administration.
- Qwen Code: MCP itself needs no premium client tier. Model access still requires a Coding Plan or API provider; the free Qwen OAuth tier ended on April 15, 2026.
- Doubao chat: No general account path for adding an arbitrary self-hosted MCP URL is currently documented.
- TRAE: MCP servers can be selected from the marketplace or added manually. Model quota, region, and client availability remain separate conditions.
- Coze: Creating an MCP-based plugin is free; hosting, model, and third-party service usage can still cost money. Private-network connections are an enterprise-tier feature.
- Claude: Local desktop extensions are available to free Claude Desktop users. Remote custom connectors require Pro, Max, Team, or Enterprise.
- Gemini Spark: Requires Gemini Spark access, age 18 or over, a personal Google Account, Keep Activity enabled, and current eligibility in the United States.

## Blueprints
- [Secure Mail MCP](/silkroad-mcp/en/blueprints/secure-mail-mcp/): A provider-neutral blueprint for building safety-first mail MCP servers.
- [Device Bridge](/silkroad-mcp/en/blueprints/device-bridge/): A blueprint for permission-aware MCP bridges to local device data.

## Important resources
- [Machine-readable catalog](/silkroad-mcp/catalog.json)
- [Machine-readable client compatibility](/silkroad-mcp/clients.json)
- [Security documentation](/silkroad-mcp/docs/security.md)
- [Architecture documentation](/silkroad-mcp/docs/architecture.md)