Coach position

Get coach composition from the engine.

GET /v1/trains/{train_number}/coach-position

Scope schedule:read · Credits 2 · Plans All plans

Returns ordered coach slots with class and physical position.

Authentication

Send your key in the X-RailCore-Key header. This operation requires the schedule:read scope. See the authentication guide.

Request parameters

Name	In	Type	Required	Description
`train_number`	path	`string`	Required	Train number, 4 to 6 uppercase letters or digits.

Code examples

Base URL https://ir.railcore.tech/v1. Keep the key in an environment variable and call from a trusted server-side environment.

cURL

curl -sS -X GET \
  -H "X-RailCore-Key: $RAILCORE_KEY" \
  "https://ir.railcore.tech/v1/trains/12656/coach-position"

JavaScript

const response = await fetch("https://ir.railcore.tech/v1/trains/12656/coach-position", {
  method: "GET",
  headers: {
    "X-RailCore-Key": process.env.RAILCORE_KEY,
  },
});

const body = await response.json();
console.log(response.status, body);

Python

import os
import requests

response = requests.request(
    "GET",
    "https://ir.railcore.tech/v1/trains/12656/coach-position",
    headers={"X-RailCore-Key": os.environ["RAILCORE_KEY"]},
    timeout=20,
)
print(response.status_code, response.json())

Rate limits and credits

This call costs 2 credits and is available on All plans. Per-minute and daily budgets, and the headers reporting remaining quota, are documented in rate limits and credits and billing.

Response fields

Field	Type	Description
`train_number`	`string`	Train number.
`coach_position[].sequence`	`integer`	Composition order.
`coach_position[].coach_name`	`string`	Coach label such as B1.
`coach_position[].class_code`	`ClassCode`	Travel class.
`coach_position[].position_from_engine`	`integer`	Physical slot from the engine.

Example response

{
  "success": true,
  "data": {
    "train_number": "12656",
    "coach_position": [
      {
        "sequence": 1,
        "coach_name": "EOG",
        "class_code": "SLR",
        "position_from_engine": 1
      },
      {
        "sequence": 2,
        "coach_name": "B1",
        "class_code": "3A",
        "position_from_engine": 2
      }
    ]
  },
  "meta": {
    "api_version": "v1",
    "request_id": "req_01J5Z7Y8N2K4M6P8R0T2V4X6Z8",
    "trace_id": "trc_01J5Z7Y8N2K4M6P8R0T2V4X6Z9",
    "timestamp": "2026-08-20T17:12:23.305Z",
    "freshness": {
      "mode": "live",
      "retrieved_at": "2026-08-20T17:12:23.305Z",
      "sources": [
        {
          "confidence": "high"
        }
      ]
    }
  }
}

Errors

Status	Code	Description	Retry
400	`VALIDATION_ERROR`	A required field is missing or invalid.	Not retryable
401	`MISSING_API_KEY / INVALID_API_KEY`	The credential is absent, unknown, disabled, or expired.	Not retryable
403	`SCOPE_MISSING / PLAN_ENDPOINT_DISABLED`	The key lacks the required scope or plan entitlement.	Not retryable
402	`CREDITS_EXHAUSTED`	The account balance cannot cover this operation.	Not retryable
429	`RATE_LIMITED`	Minute or daily request budget is exhausted. Honor Retry-After.	Retryable
410	`API_VERSION_SUNSET`	This API version has reached its announced sunset date. Migrate to a supported major version.	Not retryable
502	`UPSTREAM_UNAVAILABLE`	Live data could not be retrieved. Retry with backoff.	Retryable
504	`UPSTREAM_TIMEOUT`	The live-data request exceeded its deadline. Retry with backoff.	Retryable
503	`METERING_UNAVAILABLE`	Credit settlement is temporarily unavailable and no data was returned.	Retryable

Related Trains endpoints

All RailCore Indian Railways API endpoints · Quickstart · Rate limits