---
title: "TransJakarta live data — verified stack: MQTT stream, app REST API, GTFS"
description: "How TransJakarta realtime bus data works and how to use it — anonymous MQTT broker, guest REST API, official GTFS. Verified by cross-capture, Oct 2026."
status: concluded
category: technical
tags: [transjakarta, mqtt, realtime, gtfs, reverse-engineering, transit-data]
draft: true
created: 2026-10-12
updated: 2026-10-12
---

# TransJakarta live data — verified stack

**What this is:** a verified map of TransJakarta's public realtime data services — the MQTT live-bus stream, the official app REST API, and the GTFS static feed — plus ready-to-use connection recipes.

**Origin:** reverse-engineering `transit.oyenza.com` (a third-party tracker) to determine what it uses. The trail led to TransJakarta's own services, which are reachable directly. Cross-capture verification proved the third-party tracker serves the same data as the official feed — see [[transjakarta-live-data/analysis|Analysis]].

## TL;DR — the three services

1. **Live positions (MQTT):** `wss://mqtt.tj.co.id:8084/mqtt` — anonymous, no key needed. Topics `/mobile_armada/<cell>/<route>/<trip>/<fleet-no>`; one JSON payload per bus.
2. **App REST API:** `https://tijeapi.transjakarta.co.id` — guest JWT via `POST /v1/auth/login/guest` (no account). `POST /v1/bus` returns nearby buses **and** the MQTT topics to subscribe.
3. **Static schedule:** `https://gtfs.transjakarta.co.id/files/file_gtfs.zip` (~2.4 MB, open download; version observed 27 Jul 2026).

## Key verified numbers (Oct 12, 2026)

- Live fleet: ~3,300–3,720 buses (BRT, Mikrotrans, Angkutan Umum Integrasi, Transjabodetabek, Royaltrans, Rusun).
- oyenza cross-capture: 1,794 common buses, 100% trip/route ID agreement, median position delta 8.9 m, 97.8% fleet overlap over 75 s.
- Broker: ~2,000+ retained messages delivered instantly on subscribe; per-bus refresh ~8–75 s in samples.
- Third-party tracker's own browser stream: full snapshot (3,722 buses) + deltas every 3.00 s.

## Using it

- Copy-paste recipes (curl / node): [[transjakarta-live-data/recipes|Recipes]]
- Ready tool: [[transjakarta-live-data/scripts/tj-snapshot.mjs|scripts/tj-snapshot.mjs]] — capture a live snapshot to JSON.
- Evidence archive: `workspace/transjakarta-live-captures/` (raw captures, scripts, bundles).

## Files

- [[transjakarta-live-data/sources|Sources]] — endpoints, repos, references
- [[transjakarta-live-data/analysis|Analysis]] — architecture + verification evidence
- [[transjakarta-live-data/methodology|Methodology]] — how it was verified (repeatable)
- [[transjakarta-live-data/recipes|Recipes]] — connection examples
- [[transjakarta-live-data/next-steps|Next steps]] — risks + future ideas