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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 Canada

Using developers in Canada? You are on the local edition — key facts for Canada (capital Ottawa, dial code +1) are below. esimgomobile plans for Canada are live now — monthly plans from $8/mo and one-time travel packs from $3.65, with live checkout.

CapitalOttawa
Dial code+1
CurrencyCanadian dollar (CAD)
Time zoneUTC-5
Main languagesEnglish, French

Plans are live — see plans and pricing.

Up close

The product, up close.

Every screen below is the real flow: plans, coverage, speed and support, rendered for this page.

esimgomobile.com
Bernd Feurich
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.
eSIM installedYour Canada plan is ready.
Push · just now
Push notification on Developers · Canada: eSIM installed, plan ready to activate.
  1. 1Coverage status at a glance: data live, number available, 5G ready.
  2. 2Green means go — no guessing about what's supported.
esimgomobile.com
Dashboard
Active eSIMs4
Data left20 GB
Current cityCanada
Web dashboard on Developers · Canada: 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.
man and woman in white clothes wearing headset
Ready for Canada?
Get your eSIM
“Ready for Canada?” — the banner on Developers · Canada: two minutes from curious to connected.
  1. 1A real support transcript: the question, then the specific answer.
  2. 2This is what 'AI support' actually looks like in practice.
Recent speeds
Lisbon611 Mbps
Mexico City386 Mbps
Bangkok210 Mbps
Recent speeds for Developers · Canada — Lisbon, Mexico City, Bangkok: 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?
Support
How does Developers · Canada work?
Enter your trip details and get an instant answer — no account needed.
Support snippet — Developers · Canada: what it does, in one honest answer.
  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.
sunset over brooklyn bridge and nyc skyline
“The Canada number saved me at the rental counter — they called, I answered.”
Aiko T.Verified traveler · Canada
Traveler review for Developers · Canada: “The Canada number saved me at the rental counter — they called, I answered.” — Aiko T..
  1. 1Coverage status at a glance: data live, number available, 5G ready.
  2. 2Green means go — no guessing about what's supported.
Atlas 5GB
5 GB · 30 days
Canada
Atlas 5GB — 5 GB · 30 days, prepaid and ready on Developers · Canada.
  1. 1Usage ring compresses the whole plan into one glanceable number.
  2. 2Percent remaining is the only metric most travelers check.
Why travelers pick it
  • Hotspot included
  • Instant QR install
  • 5G where available
Why travelers pick Developers · Canada: Hotspot included, Instant QR install, 5G where available.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
eSIM plan
Atlas UnlimitedUnlimited · 30 days
Canada
Install eSIM
Atlas Unlimited on Developers · Canada — Unlimited · 30 days, prepaid with the full price shown before you pay.
  1. 1Illustrative speed readout: sample carrier, city and latency figures.
  2. 2The meter demonstrates the readout — figures are examples, not live measurements.
Tele Agent
“Setting up your Canada line…”
AI voice agent on Developers · Canada — answers spoken aloud, never a support ticket.
  1. 1Illustrative speed readout: sample carrier, city and latency figures.
  2. 2The meter demonstrates the readout — figures are examples, not live measurements.
Launch facts
195destinations live
31free tools
$8entry monthly plan
Launch facts behind Developers · Canada — 195 destinations live, 31 free tools, $8 entry monthly plan: numbers we publish and stand behind.
  1. 1A real support transcript: the question, then the specific answer.
  2. 2This is what 'AI support' actually looks like in practice.
Tele Agent
Will my phone work in Canada?
If it's carrier-unlocked and eSIM-capable, yes. I checked Canada bands — you're covered.
Tele Agent chat on Developers · Canada — real questions, specific answers, zero telecom jargon.
  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.
Tele Agent transcript
What happens when my data runs out in Canada?
You get a heads-up at 80%, then one-tap top-up. No roaming-bill surprises in Canada.
Tele Agent transcript on Developers · Canada: 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?
esimgomobile.com
Checkout
Atlas 50GB — Canadatotal
Taxescalculated
Pay securely
256-bit encrypted · Amazon Pay
Secure checkout on Developers · Canada: Atlas 50GB, full price up front, no 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.
Canada · 5G
Signal widget on Developers · Canada: network generation and place, always visible.
  1. 1Signal widget: network generation and destination, always visible.
  2. 2Five bars, zero ambiguity about what you're connected to.
86%
data left
Usage ring on Developers · Canada — 86% 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
API quickstart
curl https://api.esimgomobile.com/v1/esims \
  -H "Authorization: Bearer $KEY" \
  -d '{"country":"CA"}'
200 OK · 102 ms
REST API behind Developers · Canada: issue eSIMs programmatically — 200 OK in milliseconds.
  1. 1The dashboard keeps every eSIM, every trip, in one place.
  2. 2Rows show data left, days left and current city at a glance.
Speed test
412Mbps
5G · Canada · 42 ms
Illustrative speed readout on Developers · Canada: 412 Mbps, 42 ms — example figures, not live measurements.
  1. 1The plan card shows exactly what you're buying — data, days, destination.
  2. 2One tap starts the two-minute QR install.
Virtual number
+1 205 989 1330
Routes toCanada
SMS + voiceEnabled
Your second line on Developers · Canada: +1 205 989 1330 — 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.
man wearing yellow jacket in a mountain valley — Developers · Canada: Build on the same rails the Canada checkout uses.
Developers · Canada: Build on the same rails the Canada checkout uses.
Natã Romualdo — Developers · Canada: City lights after dark — the eSIM doesn't care what time it is.
Developers · Canada: City lights after dark — the eSIM doesn't care what time it is.
Mikhail Nilov — Developers · Canada: Sandbox first: test provisioning without spending a cent.
Developers · Canada: Sandbox first: test provisioning without spending a cent.
stein egil liland — Developers · Canada: Plazas and promenades: video calls home with the view behind you.
Developers · Canada: Plazas and promenades: video calls home with the view behind you.
friends relaxing on malay beach in the philippines — Developers · Canada: Platform to platform: tickets, timetables and taxis in one hand.
Developers · Canada: Platform to platform: tickets, timetables and taxis in one hand.
this was a fun hike we found fresh bear tracks and lots of snow even though it was mid october — Developers · Canada: Downtown, connected: the eSIM finds the fastest local network on its own.
Developers · Canada: Downtown, connected: the eSIM finds the fastest local network on its own.
an airplane wing seen from the airplane window — Developers · Canada: The rental desk handshake: confirmation email open, license photo ready.
Developers · Canada: The rental desk handshake: confirmation email open, license photo ready.
aerial viewof sand — Developers · Canada: One curl call provisions a Canada eSIM — 200 OK in milliseconds.
Developers · Canada: One curl call provisions a Canada eSIM — 200 OK in milliseconds.
modern smartphone displaying software update screen — Developers · Canada: Real journeys, real connectivity — this is what the product is for.
Developers · Canada: Real journeys, real connectivity — this is what the product is for.
downtown manhattan skyline new york city new york usa — Developers · Canada: The status page is public — uptime you can verify, not claim.
Developers · Canada: The status page is public — uptime you can verify, not claim.
a woman inside a restaurant using a laptop — Developers · Canada: Trailheads and lookouts: offline maps downloaded, just in case.
Developers · Canada: Trailheads and lookouts: offline maps downloaded, just in case.
adventurer hiking in foggy mountain landscape — Developers · Canada: Currency exchange, skipped: the phone pays at the real rate.
Developers · Canada: Currency exchange, skipped: the phone pays at the real rate.
Tomáš Malík — Developers · Canada: The last night: photo album backed up, memories safe before wheels-up.
Developers · Canada: The last night: photo album backed up, memories safe before wheels-up.
church on santorini — Developers · Canada: Check-in lines move faster when your documents are on your phone.
Developers · Canada: Check-in lines move faster when your documents are on your phone.
NenQ — Developers · Canada: The red-eye recovery: hotel early-check-in arranged mid-flight.
Developers · Canada: The red-eye recovery: hotel early-check-in arranged mid-flight.
woman doing paperwork — Developers · Canada: Sunrise hikes start with a weather check — data on, boots on.
Developers · Canada: Sunrise hikes start with a weather check — data on, boots on.
Asad Photo Maldives — Developers · Canada: Street-food stalls and mobile pay: dinner ordered without a word of the language.
Developers · Canada: Street-food stalls and mobile pay: dinner ordered without a word of the language.
Casually dressed man using smartphone in Berlin city street with historic architecture. — Developers · Canada: The sunrise ferry: tickets in the wallet app, timetable cached offline.
Developers · Canada: The sunrise ferry: tickets in the wallet app, timetable cached offline.
clouds over palace — Developers · Canada: Market mornings: look up the dish, translate the menu, pay by phone.
Developers · Canada: Market mornings: look up the dish, translate the menu, pay by phone.
Cuneyt Palta — Developers · Canada: The conference badge: QR ticket scanned, session schedule synced.
Developers · Canada: The conference badge: QR ticket scanned, session schedule synced.

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.
  • WhatsApp, iMessage and FaceTime keep your existing number on a data eSIM — no need to tell anyone a new number.
  • Save your eSIM QR code somewhere safe (email it to yourself) in case you switch phones mid-trip.
  • Keep your home SIM active for two-factor codes from your bank; run data on the eSIM line.
  • Set a data alert at 80% so a top-up never surprises you mid-trip.
  • Screenshot your hotel address and booking confirmations — you'll want them with no signal.

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

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.

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

Charts & explainers

Canada, visualized.

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.
Pro tipsFour habits of the always-connectedPro tipsSmall habits, big difference.1Check unlock statusCarrier-locked phones can't add an eSIM — verify first.2Download offline mapsThey save data and work in dead zones.3Screenshot bookingsHotel address & confirmations, available with no signal.4Set an 80% alertA top-up should never surprise you mid-trip.
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.Shares wellsend the answer to travel companionsInstant resultsno waiting, no signupPrivate by designyour inputs stay in your browserAlways currentreflects live plans and coverageMobile friendlyworks on the phone in your handIllustrative profile based on tool design — not measured telemetry.
Capability profile. What Developers · Canada does best — the capability profile, honestly ranked.
Questions, answeredThe six things everyone asks firstQuestions, answeredShort answers, no sales pitch.Do I keep my number?
Yes — WhatsApp & iMessage keep working on your existing number.
Which phones work?
Any carrier-unlocked, eSIM-capable iPhone or Android.
How fast is setup?
About two minutes: plan, QR scan, done.
Does hotspot work?
Yes — share your connection with laptop or tablet.
Is it a contract?
No — prepaid. Service simply stops instead of charging extra.
What if data runs out?
80% alert, then one-tap top-up. No bill shock.
FAQ at a glance. Six questions every traveler asks — the Developers · Canada answers, one screen.
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. Developers · Canada, demystified: open, enter, answer, act.
Network at a glanceCoverage facts for CanadaNetwork at a glanceThe numbers that matter before you buy.195destinations liveesimgomobile network data5Gwhere available in Canadaesimgomobile 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. Destinations, 5G, languages, install speed — the numbers that matter before you buy.
Plan comparison matrixEvery plan for Canada — data, validity, best fitPlans at a glanceFour prepaid plans cover every kind of trip to Canada.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 · Canada: four plans, four trip shapes — the matrix carries no fine print.
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 · Canada usage guide.
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. Buy, scan, land: the whole sequence fits in a coffee queue.
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.6 languagesThe app speaks your language, wherever you're from.One-tap top-upMore data in seconds — no new QR code.Keep your WhatsAppYour existing number keeps working on the data line.Hotspot includedShare with your laptop or tablet at no extra cost.
Included with every plan. Six things ship with every plan — the Developers · Canada baseline, generous on purpose.
Who it's forFour travelers, one toolWho it's forBuilt for real trip shapes, not personas.1The planner
Compare before you commit — know the right plan weeks ahead.
esimgomobile network data2The family organizer
One tool, every traveler's needs covered.
esimgomobile network data3The remote worker
Size data for video calls and hotspotting with confidence.
esimgomobile network data4The last-minute flyer
Answer in minutes, eSIM installed before boarding.
esimgomobile network data
Use cases. Six traveler shapes, one tool — Developers · Canada's use cases.

Your Canada plan is two minutes away

Prepaid, no contracts, no roaming surprises. The whole setup takes about two minutes.

See plans and pricing Talk to the Tele Agent