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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 India

Using developers in India? You are on the local edition — key facts for India (capital New Delhi, dial code +91) are below. esimgomobile plans for India are live now — monthly plans from $8/mo and one-time travel packs from $3.65, with live checkout.

CapitalNew Delhi
Dial code+91
CurrencyIndian rupee (INR)
Time zoneUTC+5:30
Main languagesHindi, English

Plans are live — see plans and pricing.

See it live

Twenty screens, twenty photos.

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

eSIM installedYour India plan is ready.
Push · just now
Push notification on Developers · India: eSIM installed, plan ready to activate.
  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.
Language
FrançaisDeutschEspañol
Language picker on Developers · India — Français, Deutsch, Español: the app speaks six languages.
  1. 1Signal widget: network generation and destination, always visible.
  2. 2Five bars, zero ambiguity about what you're connected to.
esimgomobile.com
Dashboard
Active eSIMs1
Data left10 GB
Current cityIndia
Web dashboard on Developers · India: every eSIM, every trip, 10 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.
Tobias Bjørkli
Get connected
1 Pick a plan2 Scan QR3 Land online
Three steps on Developers · India: pick a plan, scan the QR, land online.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
esimgomobile.com
Checkout
Atlas 50GB — Indiatotal
Taxescalculated
Pay securely
256-bit encrypted · Amazon Pay
Secure checkout on Developers · India: Atlas 50GB, full price up front, no fine print.
  1. 1Checkout shows the full price before you pay. Nothing hidden.
  2. 2Amazon Pay handles payment securely; taxes are calculated for you.
Tele Agent transcript
Do I need a local number in India?
A local India number is available on this plan — I can attach it before you land.
Tele Agent transcript on Developers · India: real question, specific answer.
  1. 1A real support transcript: the question, then the specific answer.
  2. 2This is what 'AI support' actually looks like in practice.
Tele Agent
“Setting up your India line…”
AI voice agent on Developers · India — answers spoken aloud, never a support ticket.
  1. 1The Tele Agent answers in plain language — no telecom jargon.
  2. 2Every answer is specific to your trip, not a generic FAQ.
Coverage
195
destinations live
India5G ready
Check coverage
Coverage at a glance for Developers · India: 195 destinations live, fastest local partner selected on its own.
  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.
Support
How does Developers · India work?
Enter your trip details and get an instant answer — no account needed.
Support snippet — Developers · India: what it does, in one honest answer.
  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 · India 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.
male hiker standing on the rock overlooking the green mountains
India is calling.
Get your eSIM
“India is calling.” — the banner on Developers · India: two minutes from curious to connected.
  1. 1Coverage pins show where partner networks are live.
  2. 2The map answers the only question that matters: will it work there?
tokyo night aerial view of illuminated streets
Your India number is waiting.
Get your eSIM
Live now · no waitlist
“Your India number is waiting.” — the CTA card on Developers · India: plans live now, no waitlist.
  1. 1Coverage status at a glance: data live, number available, 5G ready.
  2. 2Green means go — no guessing about what's supported.
cute little girl with suitcase and passport
India
eSIM dataLive
Local numberAvailable
5GYes
Coverage card on Developers · India: data live, local number available, 5G where it exists.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
Virtual number
+1 205 426 2159
Routes toIndia
SMS + voiceEnabled
Your second line on Developers · India: +1 205 426 2159 — real number, SMS and voice enabled.
  1. 1Coverage status at a glance: data live, number available, 5G ready.
  2. 2Green means go — no guessing about what's supported.
businesspeople brainstorming in a meeting
“Switched plans mid-trip in India. Took about a minute.”
Aiko T.Verified traveler · India
Traveler review for Developers · India: “Switched plans mid-trip in India. Took about a minute.” — Aiko T..
  1. 1Coverage status at a glance: data live, number available, 5G ready.
  2. 2Green means go — no guessing about what's supported.
India · 5G
Signal widget on Developers · India: network generation and place, always visible.
  1. 1Usage ring compresses the whole plan into one glanceable number.
  2. 2Percent remaining is the only metric most travelers check.
esimgomobile.com
Plans for India
Atlas 5GB5 GB · 30 days
Atlas 20GB20 GB · 30 days
Atlas 50GB50 GB · 60 days
Compare plans
Plan picker on Developers · India: 5GB, 20GB, 50GB and Unlimited — pick by trip, not fine print.
  1. 1Three plans side by side so the trade-off is obvious.
  2. 2Pick by trip length, not by decoding fine print.
Atlas 20GB
20 GB · 30 days
India
Atlas 20GB — 20 GB · 30 days, prepaid and ready on Developers · India.
  1. 1Usage ring compresses the whole plan into one glanceable number.
  2. 2Percent remaining is the only metric most travelers check.
80%
data left
Usage ring on Developers · India — 80% of data left: the number travelers check most.
  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
candid moment at mumbai airport viewing area
esimgomobile Developers
Travel guides · 8 min read
From the blog: “esimgomobile Developers” — travel guides in about eight minutes.
  1. 1Checkout shows the full price before you pay. Nothing hidden.
  2. 2Amazon Pay handles payment securely; taxes are calculated for you.
coffee shop workspace with laptop and iced coffee — Developers · India: Street-food stalls and mobile pay: dinner ordered without a word of the language.
Developers · India: Street-food stalls and mobile pay: dinner ordered without a word of the language.
people in airport terminal — Developers · India: The status page is public — uptime you can verify, not claim.
Developers · India: The status page is public — uptime you can verify, not claim.
Nothing Ahead — Developers · India: Night markets and late trains — connected the whole way through.
Developers · India: Night markets and late trains — connected the whole way through.
man carrying orange backpack — Developers · India: Build on the same rails the India checkout uses.
Developers · India: Build on the same rails the India checkout uses.
church on santorini — Developers · India: Café office: hotspot running, video call stable, no hotel Wi-Fi roulette.
Developers · India: Café office: hotspot running, video call stable, no hotel Wi-Fi roulette.
airplane wing and thick clouds — Developers · India: Rooftop check-in: boarding passes and hotel keys, all on the phone.
Developers · India: Rooftop check-in: boarding passes and hotel keys, all on the phone.
dome of church on sea coast in greece — Developers · India: Real journeys, real connectivity — this is what the product is for.
Developers · India: Real journeys, real connectivity — this is what the product is for.
woman at table with documents during meeting with colleagues — Developers · India: Museum afternoons with audio guides streaming, not buffering.
Developers · India: Museum afternoons with audio guides streaming, not buffering.
JACK REDGATE — Developers · India: The rental desk handshake: confirmation email open, license photo ready.
Developers · India: The rental desk handshake: confirmation email open, license photo ready.
eifel tower from the port liena — Developers · India: The API issues eSIMs the way your app issues everything else — over HTTPS.
Developers · India: The API issues eSIMs the way your app issues everything else — over HTTPS.
modern workspace with smartphone and greenery — Developers · India: Currency exchange, skipped: the phone pays at the real rate.
Developers · India: Currency exchange, skipped: the phone pays at the real rate.
hand holding phone — Developers · India: Street level: navigation, rideshares and reviews, all instant.
Developers · India: Street level: navigation, rideshares and reviews, all instant.
eiffel tower against grey sky — Developers · India: The night bus: entertainment downloaded, messages queued, rest easy.
Developers · India: The night bus: entertainment downloaded, messages queued, rest easy.
aircraft wings through window — Developers · India: The docs ship with runnable examples, not pseudocode.
Developers · India: The docs ship with runnable examples, not pseudocode.
vibrant nightlife in shinjuku tokyo — Developers · India: Rain or shine, the connection holds — weather doesn't throttle data.
Developers · India: Rain or shine, the connection holds — weather doesn't throttle data.
architects looking at plans in office — Developers · India: From departure lounge to arrival hall, the data never drops.
Developers · India: From departure lounge to arrival hall, the data never drops.
eiffel tower in paris framed by lush greenery — Developers · India: Rate limits are generous and documented — no surprise 429s.
Developers · India: Rate limits are generous and documented — no surprise 429s.
majestic view of the iconic eiffel tower in paris — Developers · India: The long layover: streaming, working and messaging, all covered.
Developers · India: The long layover: streaming, working and messaging, all covered.
a meeting in an office — Developers · India: Souvenir hunting with live currency conversion in your pocket.
Developers · India: Souvenir hunting with live currency conversion in your pocket.
Bernd Feurich — Developers · India: The departure board flips: gate found, lounge located, all on the eSIM.
Developers · India: The departure board flips: gate found, lounge located, all on the eSIM.

Explainer

esimgomobile Developers: the full picture

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.

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.

Explainer

How it works, step by step

  1. Choose data that fits the trip
    • Short city break? 5 GB. Two weeks with maps and video calls? 20 GB. Working remotely or hotspotting? 50 GB or Unlimited.
    • Every plan shows exactly what you get — no asterisks.
  2. Install in two minutes
    • Buy, scan the QR code, done. The whole thing happens on your phone, wherever you are.
    • Install days before you fly or minutes before boarding — your call.
  3. Switch on and go
    • Enable the eSIM line in settings when you arrive. It connects to the fastest local partner network on its own.
    • Your home number keeps working for calls and texts on your physical SIM if you keep it active.

Explainer

Good to know

  • If a page won't load, toggle airplane mode for ten seconds — it forces a fresh network attach.
  • Screenshot your hotel address and booking confirmations — you'll want them with no signal.
  • WhatsApp, iMessage and FaceTime keep your existing number on a data eSIM — no need to tell anyone a new number.
  • Hotspot sparingly: one laptop tethered all day can burn through a week of phone data.
  • Set a data alert at 80% so a top-up never surprises you mid-trip.
  • Charge your phone before long travel days; weak signal areas drain batteries faster.

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

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.

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

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

See the math

The numbers behind India.

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.
How esimgomobile Developers worksFour steps from question to answerHow this tool worksBuilt to answer one question well.1Enter your detailsTrip, data needs, destination. The tool does the math.2Get the answerClear result with next steps — save it or act on it.3Apply itJump straight to the plan, setting or page it points to.4Open the toolNo account needed — it loads instantly in your browser.
Tool walkthrough. Developers · India, demystified: open, enter, answer, act.
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.1Pick your planChoose data for your trip — checkout takes about two minutes.2Scan the QR codeThe eSIM installs straight onto your phone. No store, no plastic SIM.3Land connectedSwitch the line on when you arrive — online before baggage claim.
Three-step setup. Install days before departure or minutes before boarding — your call.
Network at a glanceCoverage facts for IndiaNetwork at a glanceThe numbers that matter before you buy.195destinations liveesimgomobile network data5Gwhere available in Indiaesimgomobile 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. India connects to the fastest available local partner network automatically.
Plan comparison matrixEvery plan for India — data, validity, best fitPlans at a glanceFour prepaid plans cover every kind of trip to India.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 · India: four plans, four trip shapes — the matrix carries no fine print.
Every plan includesNo tiers of basic dignity — these ship with all plansEvery plan includesThe baseline is generous on purpose.24/7 supportReal humans plus the Tele Agent, around the clock.5G where availableFastest local partner network, selected automatically.Keep your WhatsAppYour existing number keeps working on the data line.6 languagesThe app speaks your language, wherever you're from.One-tap top-upMore data in seconds — no new QR code.Hotspot includedShare with your laptop or tablet at no extra cost.
Included with every plan. Six things ship with every plan — the Developers · India baseline, generous on purpose.
esimgomobile Developers: capability profileWhat the tool is good at — illustrative profileCapability profileFive strengths, ranked by what users feel first.Mobile friendlyworks on the phone in your handAlways currentreflects live plans and coveragePrivate by designyour inputs stay in your browserInstant resultsno waiting, no signupShares wellsend the answer to travel companionsIllustrative profile based on tool design — not measured telemetry.
Capability profile. Ranked by what travelers notice first, not by marketing priority.
Pro tipsFour habits of the always-connectedPro tipsSmall habits, big difference.1Check unlock statusCarrier-locked phones can't add an eSIM — verify first.2Set an 80% alertA top-up should never surprise you mid-trip.3Download offline mapsThey save data and work in dead zones.4Keep home SIM for 2FABank codes still arrive while data runs on the eSIM.
Pro tips. Veterans do all four without thinking.
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. Gigabytes translated into hours — the Developers · India usage guide.
Questions, answeredThe six things everyone asks firstQuestions, answeredShort answers, no sales pitch.Which phones work?
Any carrier-unlocked, eSIM-capable iPhone or Android.
What if data runs out?
80% alert, then one-tap top-up. No bill shock.
Is it a contract?
No — prepaid. Service simply stops instead of charging extra.
How fast is setup?
About two minutes: plan, QR scan, done.
Does hotspot work?
Yes — share your connection with laptop or tablet.
Do I keep my number?
Yes — WhatsApp & iMessage keep working on your existing number.
FAQ at a glance. Six questions every traveler asks — the Developers · India answers, one screen.
Who it's forFour travelers, one toolWho it's forBuilt for real trip shapes, not personas.1The family organizer
One tool, every traveler's needs covered.
esimgomobile network data2The last-minute flyer
Answer in minutes, eSIM installed before boarding.
esimgomobile network data3The planner
Compare before you commit — know the right plan weeks ahead.
esimgomobile network data4The remote worker
Size data for video calls and hotspotting with confidence.
esimgomobile network data
Use cases. Six traveler shapes, one tool — Developers · India's use cases.

Ready when India is

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

See plans and pricing Talk to the Tele Agent