77b0a55c41
Second audit under the Jakarta public transport umbrella: comuline.com replicates KAI Commuter's official partner API (api-partner.krl.co.id); its data has been frozen since ~2025-03-30. Adds the umbrella hub, the comuline topic (sources/analysis/recipes/next-steps), and links the existing transjakarta-live-data topic under the umbrella.
48 lines
2.9 KiB
Markdown
48 lines
2.9 KiB
Markdown
---
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title: "TransJakarta live data — verified stack: MQTT stream, app REST API, GTFS"
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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."
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status: concluded
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category: technical
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tags: [transjakarta, mqtt, realtime, gtfs, reverse-engineering, transit-data, jakarta-public-transport-data]
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draft: true
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created: 2026-10-12
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updated: 2026-10-12
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---
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# TransJakarta live data — verified stack
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**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.
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**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]].
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## TL;DR — the three services
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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.
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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.
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3. **Static schedule:** `https://gtfs.transjakarta.co.id/files/file_gtfs.zip` (~2.4 MB, open download; version observed 27 Jul 2026).
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## Key verified numbers (Oct 12, 2026)
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- Live fleet: ~3,300–3,720 buses (BRT, Mikrotrans, Angkutan Umum Integrasi, Transjabodetabek, Royaltrans, Rusun).
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- 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.
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- Broker: ~2,000+ retained messages delivered instantly on subscribe; per-bus refresh ~8–75 s in samples.
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- Third-party tracker's own browser stream: full snapshot (3,722 buses) + deltas every 3.00 s.
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## Using it
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- Copy-paste recipes (curl / node): [[transjakarta-live-data/recipes|Recipes]]
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- Ready tool: [[transjakarta-live-data/scripts/tj-snapshot.mjs|scripts/tj-snapshot.mjs]] — capture a live snapshot to JSON.
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- Evidence archive: `workspace/transjakarta-live-captures/` (raw captures, scripts, bundles).
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## Files
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- [[transjakarta-live-data/sources|Sources]] — endpoints, repos, references
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- [[transjakarta-live-data/analysis|Analysis]] — architecture + verification evidence
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- [[transjakarta-live-data/methodology|Methodology]] — how it was verified (repeatable)
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- [[transjakarta-live-data/recipes|Recipes]] — connection examples
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- [[transjakarta-live-data/next-steps|Next steps]] — risks + future ideas
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## Related Research
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- [[jakarta-public-transport-data/index|Jakarta Public Transport Data]] — umbrella topic
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- [[comuline-krl-data/index|Comuline / KRL Schedule Data]] — sibling audit (rail schedules)
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