curl --request GET \
  --url https://spi.sandbox.lerian.net/api/v1/spi/operations/{operationId}/timeline \
  --header 'Authorization: Bearer <token>'

package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://spi.sandbox.lerian.net/api/v1/spi/operations/{operationId}/timeline"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("Authorization", "Bearer <token>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};

fetch('https://spi.sandbox.lerian.net/api/v1/spi/operations/{operationId}/timeline', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://spi.sandbox.lerian.net/api/v1/spi/operations/{operationId}/timeline"

headers = {"Authorization": "Bearer <token>"}

response = requests.get(url, headers=headers)

print(response.text)

{
  "items": [
    {
      "category": "<string>",
      "id": "<string>",
      "occurredAt": "2026-06-14T12:00:00Z",
      "operationId": "<string>",
      "actorId": "<string>",
      "actorType": "<string>",
      "createdAt": "2026-06-14T12:00:00Z",
      "evidenceMetadata": {},
      "failureCategory": "<string>",
      "messageId": "550e8400-e29b-41d4-a716-446655440000",
      "newState": "<string>",
      "railReference": "E1234567820260614ABCDEFGHIJKLMNO",
      "reason": "<string>",
      "reasonCode": "<string>",
      "source": "<string>",
      "summary": "<string>"
    }
  ],
  "limit": 123,
  "nextCursor": "<string>"
}

{
  "correlationId": "req-7a3f9c2e",
  "code": "<string>",
  "detail": "Property foo is required but is missing.",
  "errors": [
    {
      "location": "<string>",
      "message": "<string>",
      "value": "<unknown>"
    }
  ],
  "instance": "https://example.com/error-log/abc123",
  "status": 400,
  "title": "Bad Request",
  "type": "https://example.com/errors/example",
  "upstream": {
    "code": "E4001",
    "message": "account not found at provider"
  }
}

{
  "correlationId": "req-7a3f9c2e",
  "code": "<string>",
  "detail": "Property foo is required but is missing.",
  "errors": [
    {
      "location": "<string>",
      "message": "<string>",
      "value": "<unknown>"
    }
  ],
  "instance": "https://example.com/error-log/abc123",
  "status": 400,
  "title": "Bad Request",
  "type": "https://example.com/errors/example",
  "upstream": {
    "code": "E4001",
    "message": "account not found at provider"
  }
}

{
  "correlationId": "req-7a3f9c2e",
  "code": "<string>",
  "detail": "Property foo is required but is missing.",
  "errors": [
    {
      "location": "<string>",
      "message": "<string>",
      "value": "<unknown>"
    }
  ],
  "instance": "https://example.com/error-log/abc123",
  "status": 400,
  "title": "Bad Request",
  "type": "https://example.com/errors/example",
  "upstream": {
    "code": "E4001",
    "message": "account not found at provider"
  }
}

{
  "correlationId": "req-7a3f9c2e",
  "code": "<string>",
  "detail": "Property foo is required but is missing.",
  "errors": [
    {
      "location": "<string>",
      "message": "<string>",
      "value": "<unknown>"
    }
  ],
  "instance": "https://example.com/error-log/abc123",
  "status": 400,
  "title": "Bad Request",
  "type": "https://example.com/errors/example",
  "upstream": {
    "code": "E4001",
    "message": "account not found at provider"
  }
}

{
  "correlationId": "req-7a3f9c2e",
  "code": "<string>",
  "detail": "Property foo is required but is missing.",
  "errors": [
    {
      "location": "<string>",
      "message": "<string>",
      "value": "<unknown>"
    }
  ],
  "instance": "https://example.com/error-log/abc123",
  "status": 400,
  "title": "Bad Request",
  "type": "https://example.com/errors/example",
  "upstream": {
    "code": "E4001",
    "message": "account not found at provider"
  }
}