# get-train-route-stations

查询特定列车车次在指定区间内的途径车站、到站时间、出发时间及停留时间等详细经停信息。当用户询问某趟具体列车的经停站时使用此接口。

Agent View of the PolicyLayer registry record for `get-train-route-stations`. HTML page: https://policylayer.com/tools/deniselewis200081-rail/get-train-route-stations

## Facts

- Tool: `get-train-route-stations`
- Server: 12306 Ticket Search Server (`DeniseLewis200081/rail`) — https://policylayer.com/tools/deniselewis200081-rail.md
- Homepage: https://github.com/DeniseLewis200081/rail
- Risk category: Read (Low risk)
- Registry record: grade A, identity unverified
- Server rate-limited: no
- Parameters: 4
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `trainNo` | string | no | 要查询的实际车次编号 `train_no`，例如 "240000G10336"，而非"G1033"。此编号通常可以从 `get-tickets` 的查询结果中获取，或者由用户直接提供。 |
| `departDate` | string | no | 列车从 `fromStationTelecode` 指定的车站出发的日期 (格式: yyyy-MM-dd)。如果用户提供的是相对日期，请务必先调用 `get-current-date` 解析。 |
| `toStationTelecode` | string | no | 该列车行程的**到达站**的 `station_telecode` (3位字母编码)。通常来自 `get-tickets` 结果中的 `telecode` 字段，或者通过 `get-station-code-by-names` 得到。 |
| `fromStationTelecode` | string | no | 该列车行程的**出发站**的 `station_telecode` (3位字母编码`)。通常来自 `get-tickets` 结果中的 `telecode` 字段，或者通过 `get-station-code-by-names` 得到。 |

Parameters from the server's own tool schema.

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get-train-route-stations",
    "arguments": {}
  }
}
```

## Why get-train-route-stations is rated Low

This tool retrieves and displays train schedule information (station names, times, durations) without any side effects. It is a read-only query operation that provides users with train route details. No data is modified, deleted, or executed; it simply fetches existing static schedule information from the 12306 system.

From the tool's own definition: "Tool description states it queries ('查询') specific train route stations, arrival times, departure times, and stopover details."

## Use case

AI agents call get-train-route-stations to retrieve information from 12306 Ticket Search Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches 12306 Ticket Search Server:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "get-train-route-stations": {}
  }
}
```

## Other tools on 12306 Ticket Search Server (7)

- `get-current-date` — Read — https://policylayer.com/tools/deniselewis200081-rail/get-current-date.md
- `get-interline-tickets` — Read — https://policylayer.com/tools/deniselewis200081-rail/get-interline-tickets.md
- `get-station-by-telecode` — Read — https://policylayer.com/tools/deniselewis200081-rail/get-station-by-telecode.md
- `get-station-code-by-names` — Read — https://policylayer.com/tools/deniselewis200081-rail/get-station-code-by-names.md
- `get-station-code-of-citys` — Read — https://policylayer.com/tools/deniselewis200081-rail/get-station-code-of-citys.md
- `get-stations-code-in-city` — Read — https://policylayer.com/tools/deniselewis200081-rail/get-stations-code-in-city.md
- `get-tickets` — Read — https://policylayer.com/tools/deniselewis200081-rail/get-tickets.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=deniselewis200081-rail · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/deniselewis200081-rail