Transaction Timeline
Retrieve the full event history for a transaction, ordered from earliest to latest.
Transaction Timeline
GET /v1/transactions/:reference/timeline
Returns an ordered list of events recorded against a transaction — from the moment the session was opened through to payment completion, failure, or cancellation.
Request
npm install @e-pay/nodenpm install @e-pay/nestjspip install epaypip install epaypip install epaypip install epaycomposer require epay-et/php-sdkcomposer require epay-et/php-sdkimplementation("com.epayethiopia:epay-java:0.1.0")implementation("com.epayethiopia:epay-spring-boot-starter:0.1.0")go get github.com/epay-et/go-sdkNothing NestJS-specific here — this is the same Node.js client call.
Nothing Django-specific here — this is the same Python client call.
Nothing Flask-specific here — this is the same Python client call.
Nothing FastAPI-specific here — this is the same Python client call.
Nothing Laravel-specific here — this is the same PHP client call.
Nothing Spring Boot-specific here — this is the same Java client call.
curl https://api.epayethiopia.com/v1/transactions/PAB12CD3420260813/timeline \
-H "Authorization: Bearer sk_live_your_key_here"import { Epay } from '@e-pay/node';
const epay = new Epay({ apiKey: process.env.EPAY_SECRET_KEY });
const timeline = await epay.transactions.timeline(reference);
for (const event of timeline.events) {
console.log(event.eventType, event.occurredAt, event.errorCode);
}
const res = await fetch('https://api.epayethiopia.com/v1/transactions/PAB12CD3420260813/timeline', {
headers: { Authorization: `Bearer ${process.env.EPAY_SECRET_KEY}` },
});
if (!res.ok) throw new Error(`ePay ${res.status}: ${await res.text()}`);
const { reference, events } = await res.json();from epay import Epay
epay = Epay() # reads EPAY_SECRET_KEY
timeline = epay.transactions.timeline(reference)
for event in timeline["events"]:
print(event["eventType"], event["occurredAt"], event["errorCode"])
import os
import requests
res = requests.get(
"https://api.epayethiopia.com/v1/transactions/PAB12CD3420260813/timeline",
headers={"Authorization": f"Bearer {os.environ['EPAY_SECRET_KEY']}"},
timeout=30,
)
res.raise_for_status()
timeline = res.json()use Epay\Epay;
$epay = new Epay(); // reads EPAY_SECRET_KEY
$timeline = $epay->transactions->timeline($reference);
foreach ($timeline['events'] as $event) {
echo $event['eventType'], ' ', $event['occurredAt'], PHP_EOL;
}
$ch = curl_init('https://api.epayethiopia.com/v1/transactions/PAB12CD3420260813/timeline');
curl_setopt_array($ch, [
CURLOPT_RETURNTRANSFER => true,
CURLOPT_HTTPHEADER => ['Authorization: Bearer ' . getenv('EPAY_SECRET_KEY')],
]);
$body = curl_exec($ch);
$status = curl_getinfo($ch, CURLINFO_RESPONSE_CODE);
curl_close($ch);
if ($status >= 400) {
throw new RuntimeException("ePay {$status}: {$body}");
}
$timeline = json_decode($body, true);timeline, err := client.Transactions.Timeline(ctx, reference)
if err != nil {
return err
}
for \_, event := range timeline.Events {
log.Println(event.EventType, event.OccurredAt)
}
req, _ := http.NewRequestWithContext(ctx, http.MethodGet, "https://api.epayethiopia.com/v1/transactions/PAB12CD3420260813/timeline", nil)
req.Header.Set("Authorization", "Bearer "+os.Getenv("EPAY_SECRET_KEY"))
res, err := http.DefaultClient.Do(req)
if err != nil {
return err
}
defer res.Body.Close()
if res.StatusCode >= 400 {
return fmt.Errorf("ePay %d", res.StatusCode)
}
var timeline struct {
Reference string `json:"reference"`
Events []struct {
EventType string `json:"eventType"`
OccurredAt string `json:"occurredAt"`
ErrorCode *string `json:"errorCode"`
ErrorMessage *string `json:"errorMessage"`
} `json:"events"`
}
if err := json.NewDecoder(res.Body).Decode(&timeline); err != nil {
return err
}Epay epay = Epay.fromEnvironment(); // reads EPAY_SECRET_KEY
Timeline timeline = epay.transactions().timeline(reference);
for (TimelineEvent event : timeline.events()) {
System.out.println(event.eventType() + " " + event.occurredAt() + " " + event.errorCode());
}
HttpClient http = HttpClient.newHttpClient();
HttpRequest request = HttpRequest.newBuilder(
URI.create("https://api.epayethiopia.com/v1/transactions/PAB12CD3420260813/timeline"))
.header("Authorization", "Bearer " + System.getenv("EPAY_SECRET_KEY"))
.GET()
.build();
HttpResponse<String> response = http.send(request, HttpResponse.BodyHandlers.ofString());
if (response.statusCode() >= 400) {
throw new IllegalStateException("ePay " + response.statusCode() + ": " + response.body());
}
// {"reference":"…","events":[{"eventType":"…","occurredAt":"…",…}]}
String timeline = response.body();import { Controller, Get, Param } from '@nestjs/common';
import { EpayService } from '@e-pay/nestjs';
@Controller('payments')
export class PaymentsController {
constructor(private readonly epay: EpayService) {}
@Get(':reference/timeline')
timeline(@Param('reference') reference: string) {
return this.epay.transactions.timeline(reference);
}
}
from django.http import JsonResponse
from django.views.decorators.http import require_GET
from .clients import epay # Epay(api_key=settings.EPAY_SECRET_KEY)
@require_GET
def payment_timeline(request, reference):
return JsonResponse(epay.transactions.timeline(reference))from flask import jsonify
from app import app, epay # epay = Epay(), one per process
@app.get("/payments/<reference>/timeline")
def payment_timeline(reference):
return jsonify(epay.transactions.timeline(reference))
from app.main import app, epay # epay = AsyncEpay(), closed in lifespan
@app.get("/payments/{reference}/timeline")
async def payment_timeline(reference: str):
return await epay.transactions.timeline(reference)use Epay\Epay;
use Illuminate\Http\JsonResponse;
final class PaymentController
{
public function \_\_construct(private readonly Epay $epay) {}
public function timeline(string $reference): JsonResponse
{
return response()->json($this->epay->transactions->timeline($reference));
}
}
// routes/web.php
// Route::get('/payments/{reference}/timeline', [PaymentController::class, 'timeline']);
@RestController
@RequestMapping("/payments")
class PaymentController {
private final Epay epay;
PaymentController(Epay epay) {
this.epay = epay;
}
@GetMapping("/{reference}/timeline")
Timeline timeline(@PathVariable String reference) {
return epay.transactions().timeline(reference);
}
}Completed payment
{
"reference": "PAB12CD3420260813",
"events": [
{
"eventType": "session_created",
"occurredAt": "2026-08-13T11:30:00.000Z",
"errorCode": null,
"errorMessage": null
},
{
"eventType": "payment_initiated",
"occurredAt": "2026-08-13T11:45:12.000Z",
"errorCode": null,
"errorMessage": null
},
{
"eventType": "payment_completed",
"occurredAt": "2026-08-13T11:47:00.000Z",
"errorCode": null,
"errorMessage": null
}
]
}Failed payment
{
"reference": "PFF98AB1220260812",
"events": [
{
"eventType": "session_created",
"occurredAt": "2026-08-12T09:15:00.000Z",
"errorCode": null,
"errorMessage": null
},
{
"eventType": "payment_failed",
"occurredAt": "2026-08-12T09:18:44.000Z",
"errorCode": "INSUFFICIENT_FUNDS",
"errorMessage": "The customer's account does not have sufficient balance."
}
]
}Path Parameters
Prop
Type
Response
Prop
Type
Event object
Prop
Type
Errors
| Status | Description |
|---|---|
401 | Missing or invalid API key. |
404 | No transaction found for the given reference under your account. |
Next: Webhooks — receive payment events in real time instead of polling.