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Live now

API-first, down to the SIM.

Everything the dashboard does is an API call: buy data, provision eSIMs, rent numbers, send SMS, configure Tele Agent. Built for human developers — and for autonomous AI agents.

Live today

The developer platform is already open.

No sales call, no human-gated first project: sign in and mint your own API keys. The product endpoints (catalog, checkout, numbers, Tele Agent) are live — everything below works right now.

Self-serve API keys

Sign in with Firebase and mint esk_live_… keys instantly — scoped to a project (production, test, experiment), hash-stored, revocable in one call.

# mint a key
curl -X POST \
  https://api.esimgomobile.com/api/v1/keys \
  -H "Authorization: Bearer $FIREBASE_ID_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"name":"ci","project":"test"}'

Webhooks: com.esimgomobile.*

HTTPS endpoints, per-endpoint HMAC-SHA256 signatures (Stripe-style t=…,v1=…), at-least-once delivery with backoff, dead-lettering and replay. Billing, number provisioning, porting, calls, SMS, key and KYC events.

Number porting API

draft → information_required → pending → completed. The API tells you exactly which fields each country needs before you submit — submission is fail-closed until carrier onboarding completes.

KYC intake

Collect the identity documents carriers require per country. Verification stays honestly pending_verification until a verification vendor is configured — never a fake "verified".

Honest status page

Component states derived live from service configuration — never fabricated uptime percentages.

esimgomobile.com/status/ →

REST API

The v1 API contract — live now.

The product contract below is final for v1 and live on the platform. Authenticate with a bearer API key; every response is JSON.

MethodEndpointWhat it does
GET/api/catalogList live eSIM plans (country, data, validity, price)
POST/api/checkoutCreate a checkout session for a plan → returns payment URL
GET/api/accountOrders, lines, numbers and Tele Agent status
GET/api/qr?order_id=…Fetch or re-issue the eSIM QR / activation code
GET/api/balance?profile_id=…Live remaining data for an eSIM line
GET/api/numbers?country=…Search available virtual numbers
POST/api/numbers/purchaseRent a virtual number (monthly)
POST/api/teleagent/signupAttach Tele Agent to a number with business config
# list live eSIM plans
curl https://esimgomobile.com/api/catalog \
  -H "Authorization: Bearer $ESIM_API_KEY"

# → { "plans": [ { "id": "esim-jp-10gb-30d", "country": "Japan",
#     "data_gb": 10, "validity_days": 30, "price_usd": 24.9, ... } ] }

# check data balance on a line
curl "https://esimgomobile.com/api/balance?profile_id=prof_abc" \
  -H "Authorization: Bearer $ESIM_API_KEY"

# → { "profile_id": "prof_abc", "remaining_mb": 6240,
#     "total_mb": 10240, "percent": 61 }
Developer surface

Four ways to build.

SDKs

Live: idiomatic JavaScript and Python clients covering every live route — keys, webhooks, porting, KYC, status. Tested, versioned, on GitHub.

Status: live

CLI

Live: the esim CLI scripts everything from the terminal — esim keys issue, esim webhooks register, esim portings create, esim kyc verify. Made for automation and agents.

Status: live

MCP server

A Model Context Protocol server exposing the whole platform to AI agents — buy data, provision lines, manage numbers and Tele Agent from any MCP client. Already powering our ChatGPT app; the same server ships for Claude and other agents.

Status: in progress

Migrate from Twilio in three steps

Bring your Twilio voice/SMS app to esimgomobile without rewriting it: port your numbers, point your webhooks at our compatible endpoints, verify with a test call. A guided toolkit walks the whole move — numbers, messaging and Tele Agent included.

Status: live
Get building

Developer keys are live today.

Sign in, mint an esk_live_… key and start building against the live developer platform — webhooks, porting, KYC and status included.

Read the OpenAPI doc

esimgomobile in Indonesia

Using developers in Indonesia? You are on the local edition — key facts for Indonesia (capital Jakarta, dial code +62) are below. esimgomobile plans for Indonesia are live now — monthly plans from $8/mo and one-time travel packs from $3.65, with live checkout.

CapitalJakarta
Dial code+62
CurrencyIndonesian rupiah (IDR)
Time zoneUTC+7
Main languagesIndonesian

Plans are live — see plans and pricing.

How it works

Take the tour.

Twenty product screens and twenty field photos — this is what traveling connected looks like.

85%
data left
Usage ring on Developers · Indonesia — 85% of data left: the number travelers check most.
  1. 1Signal widget: network generation and destination, always visible.
  2. 2Five bars, zero ambiguity about what you're connected to.
eSIM plan
Atlas UnlimitedUnlimited · 30 days
Indonesia
Install eSIM
Atlas Unlimited on Developers · Indonesia — Unlimited · 30 days, prepaid with the full price shown before you pay.
  1. 1The Tele Agent answers in plain language — no telecom jargon.
  2. 2Every answer is specific to your trip, not a generic FAQ.
esimgomobile.com
Dashboard
Active eSIMs4
Data left20 GB
Current cityIndonesia
Web dashboard on Developers · Indonesia: every eSIM, every trip, 20 GB left — one screen.
  1. 1Three plans side by side so the trade-off is obvious.
  2. 2Pick by trip length, not by decoding fine print.
Coverage
195
destinations live
Indonesia5G ready
Check coverage
Coverage at a glance for Developers · Indonesia: 195 destinations live, fastest local partner selected on its own.
  1. 1Illustrative speed readout: sample carrier, city and latency figures.
  2. 2The meter demonstrates the readout — figures are examples, not live measurements.
My eSIM
82%50 GB left
Days left20
Top up+10 GB
Data dashboard on Developers · Indonesia: 82% remaining, days left, top-up one tap away.
  1. 1Live usage ring: see remaining data at a glance, no mental math.
  2. 2Top-up button sits right where you need it when data runs low.
esimgomobile.com
aerial view from airplane over barren landscape
esimgomobile Developers
Travel guides · 8 min read
From the blog: “esimgomobile Developers” — travel guides in about eight minutes.
  1. 1The dashboard keeps every eSIM, every trip, in one place.
  2. 2Rows show data left, days left and current city at a glance.
Recent speeds
Mexico City712 Mbps
Istanbul906 Mbps
Seoul147 Mbps
Recent speeds for Developers · Indonesia — Mexico City, Istanbul, Seoul: illustrative 5G figures, not live measurements.
  1. 1Coverage pins show where partner networks are live.
  2. 2The map answers the only question that matters: will it work there?
Why travelers pick it
  • 24/7 support
  • 5G where available
  • Keep WhatsApp number
Why travelers pick Developers · Indonesia: 24/7 support, 5G where available, Keep WhatsApp number.
  1. 1The roaming math, made visible: one price versus per-day carrier fees.
  2. 2This is the comparison most travelers never see until the bill.
photo of men talking through laptop
“The Indonesia number saved me at the rental counter — they called, I answered.”
Leo M.Verified traveler · Indonesia
Traveler review for Developers · Indonesia: “The Indonesia number saved me at the rental counter — they called, I answered.” — Leo M..
  1. 1The roaming math, made visible: one price versus per-day carrier fees.
  2. 2This is the comparison most travelers never see until the bill.
esimgomobile.com
Checkout
Atlas Unlimited — Indonesiatotal
Taxescalculated
Pay securely
256-bit encrypted · Amazon Pay
Secure checkout on Developers · Indonesia: Atlas Unlimited, full price up front, no fine print.
  1. 1Three plans side by side so the trade-off is obvious.
  2. 2Pick by trip length, not by decoding fine print.
white clouds in the blue sky
Indonesia
eSIM dataLive
Local numberAvailable
5GYes
Coverage card on Developers · Indonesia: data live, local number available, 5G where it exists.
  1. 1Coverage status at a glance: data live, number available, 5G ready.
  2. 2Green means go — no guessing about what's supported.
Network
5G
Indonesia connected
Network widget for Developers · Indonesia: 5G, full bars — zero ambiguity about the connection.
  1. 1The plan card shows exactly what you're buying — data, days, destination.
  2. 2One tap starts the two-minute QR install.
Speed test
391Mbps
5G · Indonesia · 80 ms
Illustrative speed readout on Developers · Indonesia: 391 Mbps, 80 ms — example figures, not live measurements.
  1. 1Illustrative speed readout: sample carrier, city and latency figures.
  2. 2The meter demonstrates the readout — figures are examples, not live measurements.
Virtual number
+1 205 306 3120
Routes toIndonesia
SMS + voiceEnabled
Your second line on Developers · Indonesia: +1 205 306 3120 — real number, SMS and voice enabled.
  1. 1The roaming math, made visible: one price versus per-day carrier fees.
  2. 2This is the comparison most travelers never see until the bill.
Indonesia · coverage
5 carriers · automatic selection
Coverage map on Developers · Indonesia: partner networks pinned, selection automatic.
  1. 1Mockups illustrate the product flow — captions describe what's real.
  2. 2Figures labeled as examples show sample data, never live telemetry.
vs roaming
esimgomobile eSIMone price
Carrier roamingper-day fees
10 GB · 14 days · Indonesia
The honest comparison on Developers · Indonesia: one prepaid eSIM price versus carrier roaming.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
Install
1 Scan2 Add3 Go
The Developers · Indonesia install: QR in three steps — scan, add, go, about two minutes.
  1. 1The Tele Agent answers in plain language — no telecom jargon.
  2. 2Every answer is specific to your trip, not a generic FAQ.
Tele Agent transcript
What happens when my data runs out in Indonesia?
You get a heads-up at 80%, then one-tap top-up. No roaming-bill surprises in Indonesia.
Tele Agent transcript on Developers · Indonesia: real question, specific answer.
  1. 1Coverage pins show where partner networks are live.
  2. 2The map answers the only question that matters: will it work there?
Atlas 5GB
5 GB · 30 days
Indonesia
Atlas 5GB — 5 GB · 30 days, prepaid and ready on Developers · Indonesia.
  1. 1The plan chip: name, allowance and destination in one line.
  2. 2Everything you need to confirm you're on the right plan.
esimgomobile.com
Plans for Indonesia
Atlas 5GB5 GB · 30 days
Atlas 20GB20 GB · 30 days
Atlas 50GB50 GB · 60 days
Compare plans
Plan picker on Developers · Indonesia: 5GB, 20GB, 50GB and Unlimited — pick by trip, not fine print.
  1. 1The dashboard keeps every eSIM, every trip, in one place.
  2. 2Rows show data left, days left and current city at a glance.
a view of a beach with a greek flag flying — Developers · Indonesia: Street level: navigation, rideshares and reviews, all instant.
Developers · Indonesia: Street level: navigation, rideshares and reviews, all instant.
Nothing Ahead — Developers · Indonesia: Real journeys, real connectivity — this is what the product is for.
Developers · Indonesia: Real journeys, real connectivity — this is what the product is for.
João Vítor Heinrichs — Developers · Indonesia: Coworking abroad: laptop tethered, calls crisp, deadlines met.
Developers · Indonesia: Coworking abroad: laptop tethered, calls crisp, deadlines met.
mother and daughter walking at eindhoven airport — Developers · Indonesia: Hiking the ridge: trail map offline, emergency numbers saved.
Developers · Indonesia: Hiking the ridge: trail map offline, emergency numbers saved.
woman having a video call — Developers · Indonesia: The modern arrival: online before the seatbelt sign goes off.
Developers · Indonesia: The modern arrival: online before the seatbelt sign goes off.
church on sea shore — Developers · Indonesia: Sunrise hikes start with a weather check — data on, boots on.
Developers · Indonesia: Sunrise hikes start with a weather check — data on, boots on.
Rene Terp — Developers · Indonesia: Platform to platform: tickets, timetables and taxis in one hand.
Developers · Indonesia: Platform to platform: tickets, timetables and taxis in one hand.
two women collaborating on a project indoors — Developers · Indonesia: The welcome home: eSIM deleted in one tap, no contract to cancel.
Developers · Indonesia: The welcome home: eSIM deleted in one tap, no contract to cancel.
Yusuf Sabqi — Developers · Indonesia: The API issues eSIMs the way your app issues everything else — over HTTPS.
Developers · Indonesia: The API issues eSIMs the way your app issues everything else — over HTTPS.
Oliver Schröder — Developers · Indonesia: From departure lounge to arrival hall, the data never drops.
Developers · Indonesia: From departure lounge to arrival hall, the data never drops.
evening street view of ginza tokyo s shopping district — Developers · Indonesia: The connected trip: maps, messages and translation, all on one eSIM.
Developers · Indonesia: The connected trip: maps, messages and translation, all on one eSIM.
busy airport terminal with silhouetted travelers — Developers · Indonesia: The viewpoint at golden hour: livestream the sunset to everyone back home.
Developers · Indonesia: The viewpoint at golden hour: livestream the sunset to everyone back home.
A person holding a smartphone in an airport with luggage visible, ideal for travel and tech concepts. — Developers · Indonesia: Street-food stalls and mobile pay: dinner ordered without a word of the language.
Developers · Indonesia: Street-food stalls and mobile pay: dinner ordered without a word of the language.
Kristian Bechthold — Developers · Indonesia: SDKs, a CLI, and an MCP server — the developer surface, complete.
Developers · Indonesia: SDKs, a CLI, and an MCP server — the developer surface, complete.
man using laptop computer — Developers · Indonesia: Coast roads and country lanes — the map keeps up wherever you roam.
Developers · Indonesia: Coast roads and country lanes — the map keeps up wherever you roam.
man walking on stone pathway — Developers · Indonesia: The red-eye recovery: hotel early-check-in arranged mid-flight.
Developers · Indonesia: The red-eye recovery: hotel early-check-in arranged mid-flight.
grayscale photo of people hiking on the mountain — Developers · Indonesia: Golden hour, fully online — photo backups upload before dinner.
Developers · Indonesia: Golden hour, fully online — photo backups upload before dinner.
Pok Rie — Developers · Indonesia: Trailheads and lookouts: offline maps downloaded, just in case.
Developers · Indonesia: Trailheads and lookouts: offline maps downloaded, just in case.
Muharrem Alper — Developers · Indonesia: Museum afternoons with audio guides streaming, not buffering.
Developers · Indonesia: Museum afternoons with audio guides streaming, not buffering.
man hiking in snow in mountains — Developers · Indonesia: The window seat office: emails sent somewhere over the ocean.
Developers · Indonesia: The window seat office: emails sent somewhere over the ocean.

Explainer

esimgomobile Developers: the full picture

Everything on this page exists to answer one question well: how does esimgomobile fit into your trip? The sections below go deep so you never need a second tab.

The short version: prepaid travel eSIMs across 195 destinations, installed by QR code in two minutes, managed from a dashboard, with an AI agent on call when you need a human-style answer fast.

The long version is the rest of this page — plans, mechanics, edge cases and honest trade-offs, written the way we'd explain it to a friend.

Explainer

How it works, step by step

  1. Buy before you fly
    • Order from home, the hotel, or the departure lounge — delivery is instant and digital.
    • No shipping, no pickup counters, no airport SIM queues.
  2. Add the eSIM
    • One QR scan adds the plan to your phone. iPhone and Android both walk you through it in under a minute.
    • You can install now and activate later — the plan starts when you choose.
  3. Stay online abroad
    • Data, maps, translation and messaging work the moment you land.
    • Running low? Top up in one tap from your dashboard — no new QR code needed.

Explainer

Good to know

  • Screenshot your hotel address and booking confirmations — you'll want them with no signal.
  • Download offline maps for your destination — they save data and work in dead zones.
  • Buy and install your eSIM before departure — airport Wi-Fi is the worst place to set up connectivity.
  • Save your eSIM QR code somewhere safe (email it to yourself) in case you switch phones mid-trip.
  • Set a data alert at 80% so a top-up never surprises you mid-trip.
  • WhatsApp, iMessage and FaceTime keep your existing number on a data eSIM — no need to tell anyone a new number.

These are the details that separate a smooth trip from a stressful one — small, unglamorous, and worth more than any feature list.

Explainer

Why travelers switch

Roaming bills taught a generation to fear their phones abroad. The eSIM generation simply never learned that fear — data is prepaid, visible and finite.

The Tele Agent closes the remaining gap: a question at midnight in a foreign terminal gets an answer in seconds, not a support ticket.

And because everything is prepaid through Amazon Pay, the commercial relationship is simple: you pay for data, you get data, it ends when it ends.

By the numbers

Every chart that matters for Indonesia.

esimgomobile Developers — data dashboard

The product's headline numbers, switchable by dataset.

195
destinations live
global footprint
4
Atlas plans
prepaid, no contracts
~2 min
typical install
QR scan to online
6
app languages
EN ES FR DE PT JA
Atlas 5GB: 5 GB over 30 days — Weekend breaks & light useAtlas 5GB 5 GBAtlas 20GB: 20 GB over 30 days — Two-week trips & daily useAtlas 20GB 20 GBAtlas 50GB: 50 GB over 60 days — Remote work & hotspottingAtlas 50GB 50 GBAtlas Unlimited: Unlimited over 30 days — Heavy use, zero meteringAtlas Unlimited Unlimited
Atlas 5GB: 30-day validityAtlas 5GB 30 daysAtlas 20GB: 30-day validityAtlas 20GB 30 daysAtlas 50GB: 60-day validityAtlas 50GB 60 daysAtlas Unlimited: 30-day validityAtlas Unlimited 30 days
Illustrative — D1: 100% of maxIllustrative — D10: 70% of maxIllustrative — D20: 42% of maxIllustrative — D30: 12% of maxDay 1Day 10Day 20Day 30IllustrativeIllustrative 20 GB burn-down at moderate use.

Hover any bar or point for its exact value. Tabs switch datasets — everything on this panel is computed from live product data unless labeled illustrative.

esimgomobile Developers — data dashboard. Plan allowances, validity windows and a typical usage curve for esimgomobile Developers — hover for exact values.
Every plan includesNo tiers of basic dignity — these ship with all plansEvery plan includesThe baseline is generous on purpose.6 languagesThe app speaks your language, wherever you're from.5G where availableFastest local partner network, selected automatically.Keep your WhatsAppYour existing number keeps working on the data line.Hotspot includedShare with your laptop or tablet at no extra cost.24/7 supportReal humans plus the Tele Agent, around the clock.One-tap top-upMore data in seconds — no new QR code.
Included with every plan. From 5 GB to Unlimited, the inclusions don't shrink.
Pro tipsFour habits of the always-connectedPro tipsSmall habits, big difference.1Install before you flyAirport Wi-Fi is the worst place to set up connectivity.2Check unlock statusCarrier-locked phones can't add an eSIM — verify first.3Keep home SIM for 2FABank codes still arrive while data runs on the eSIM.4Screenshot bookingsHotel address & confirmations, available with no signal.
Pro tips. The small things that separate smooth trips from stressful ones.
esimgomobile Developers: capability profileWhat the tool is good at — illustrative profileCapability profileFive strengths, ranked by what users feel first.Always currentreflects live plans and coveragePrivate by designyour inputs stay in your browserInstant resultsno waiting, no signupShares wellsend the answer to travel companionsMobile friendlyworks on the phone in your handIllustrative profile based on tool design — not measured telemetry.
Capability profile. Capabilities measured by traveler value, not feature count.
Plan comparison matrixEvery plan for Indonesia — data, validity, best fitPlans at a glanceFour prepaid plans cover every kind of trip to Indonesia.PLANDATAVALIDITYAtlas 5GBWeekend breaks & light use5 GB30 daysAtlas 20GBTwo-week trips & daily use20 GB30 daysAtlas 50GBRemote work & hotspotting50 GB60 daysAtlas UnlimitedHeavy use, zero meteringUnlimited30 days
Plan comparison matrix. Developers · Indonesia: four plans, four trip shapes — the matrix carries no fine print.
Who it's forFour travelers, one toolWho it's forBuilt for real trip shapes, not personas.1The last-minute flyer
Answer in minutes, eSIM installed before boarding.
esimgomobile network data2The remote worker
Size data for video calls and hotspotting with confidence.
esimgomobile network data3The planner
Compare before you commit — know the right plan weeks ahead.
esimgomobile network data4The family organizer
One tool, every traveler's needs covered.
esimgomobile network data
Use cases. If you recognize yourself here, the tool will pay for its click.
What your gigabytes meanTypical hourly usage per activityWhat your gigabytes meanTranslate plan sizes into real travel behavior.Maps & navigation≈ 5 MB / hourMessaging & email≈ 20 MB / hourSocial browsing≈ 150 MB / hourVideo calls≈ 600 MB / hourHD streaming≈ 1.5 GB / hourTypical usage rates — actual consumption varies by app and quality settings.
Data usage guide. A 20 GB plan covers roughly two weeks of normal travel use.
Network at a glanceCoverage facts for IndonesiaNetwork at a glanceThe numbers that matter before you buy.195destinations liveesimgomobile network data5Gwhere available in Indonesiaesimgomobile network data6app languagesesimgomobile network data2 mintypical install timeesimgomobile network dataPlus: local numbers where available, hotspot included, 24/7 support.Prepaid only — when the plan ends, it simply stops. No contracts.
Coverage facts. The network resume for Developers · Indonesia: 195 destinations, 5G where available, six languages.
Questions, answeredThe six things everyone asks firstQuestions, answeredShort answers, no sales pitch.How fast is setup?
About two minutes: plan, QR scan, done.
What if data runs out?
80% alert, then one-tap top-up. No bill shock.
Which phones work?
Any carrier-unlocked, eSIM-capable iPhone or Android.
Is it a contract?
No — prepaid. Service simply stops instead of charging extra.
Do I keep my number?
Yes — WhatsApp & iMessage keep working on your existing number.
Does hotspot work?
Yes — share your connection with laptop or tablet.
FAQ at a glance. Six questions every traveler asks — the Developers · Indonesia answers, one screen.
Get connected in three stepsFrom purchase to online in about two minutesGet connected in three stepsNo store visit, no plastic SIM, no waiting for the post.1Land connectedSwitch the line on when you arrive — online before baggage claim.2Pick your planChoose data for your trip — checkout takes about two minutes.3Scan the QR codeThe eSIM installs straight onto your phone. No store, no plastic SIM.
Three-step setup. Install days before departure or minutes before boarding — your call.
How esimgomobile Developers worksFour steps from question to answerHow this tool worksBuilt to answer one question well.1Apply itJump straight to the plan, setting or page it points to.2Open the toolNo account needed — it loads instantly in your browser.3Enter your detailsTrip, data needs, destination. The tool does the math.4Get the answerClear result with next steps — save it or act on it.
Tool walkthrough. Four steps from landing on Developers · Indonesia to having your answer.

Your Indonesia plan is two minutes away

Join thousands of travelers who land connected. Your eSIM installs in two minutes.

See plans and pricing Talk to the Tele Agent