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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 Slovenia

Using developers in Slovenia? You are on the local edition — key facts for Slovenia (capital Ljubljana, dial code +386) are below. esimgomobile plans for Slovenia are live now — monthly plans from $8/mo and one-time travel packs from $3.65, with live checkout.

CapitalLjubljana
Dial code+386
CurrencyEuro (EUR)
Time zoneUTC+1
Main languagesSlovenian

Plans are live — see plans and pricing.

How it works

The product, up close.

A visual walkthrough built for this page — mockups of the exact experience plus photography from the field.

esimgomobile.com
API quickstart
curl https://api.esimgomobile.com/v1/esims \
  -H "Authorization: Bearer $KEY" \
  -d '{"country":"SL"}'
200 OK · 83 ms
REST API behind Developers · Slovenia: 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.
close up photo of person using smartphone
Pack light. Stay connected in Slovenia.
Get your eSIM
Live now · no waitlist
“Pack light. Stay connected in Slovenia.” — the CTA card on Developers · Slovenia: plans live now, no waitlist.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
Why travelers pick it
  • One-tap top-up
  • Keep WhatsApp number
  • 5G where available
Why travelers pick Developers · Slovenia: One-tap top-up, Keep WhatsApp number, 5G where available.
  1. 1Coverage status at a glance: data live, number available, 5G ready.
  2. 2Green means go — no guessing about what's supported.
31
free tools
launch fact
Launch fact behind Developers · Slovenia: 31 free tools — a fixed figure, not live telemetry.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
Stephen Leonardi
Slovenia
eSIM dataLive
Local numberAvailable
5GYes
Coverage card on Developers · Slovenia: data live, local number available, 5G where it exists.
  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.
Tele Agent
Do I need a local number in Slovenia?
A local Slovenia number is available on this plan — I can attach it before you land.
Tele Agent chat on Developers · Slovenia — real questions, specific answers, zero telecom jargon.
  1. 1Illustrative speed readout: sample carrier, city and latency figures.
  2. 2The meter demonstrates the readout — figures are examples, not live measurements.
My eSIM
50%50 GB left
Days left17
Top up+10 GB
Data dashboard on Developers · Slovenia: 50% remaining, days left, top-up one tap away.
  1. 1Illustrative speed readout: sample carrier, city and latency figures.
  2. 2The meter demonstrates the readout — figures are examples, not live measurements.
eSIM installedYour Slovenia plan is ready.
Push · just now
Push notification on Developers · Slovenia: eSIM installed, plan ready to activate.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
Tele Agent
“Setting up your Slovenia line…”
AI voice agent on Developers · Slovenia — answers spoken aloud, never a support ticket.
  1. 1The plan card shows exactly what you're buying — data, days, destination.
  2. 2One tap starts the two-minute QR install.
Virtual number
+1 205 763 2193
Routes toSlovenia
SMS + voiceEnabled
Your second line on Developers · Slovenia: +1 205 763 2193 — 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.
Support
How does Developers · Slovenia work?
Enter your trip details and get an instant answer — no account needed.
Support snippet — Developers · Slovenia: what it does, in one honest answer.
  1. 1Coverage status at a glance: data live, number available, 5G ready.
  2. 2Green means go — no guessing about what's supported.
Tele Agent transcript
Can I keep my WhatsApp number?
Yes — your eSIM is data-first, so WhatsApp keeps working on your existing number in Slovenia.
Tele Agent transcript on Developers · Slovenia: 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?
Install
1 Scan2 Add3 Go
The Developers · Slovenia install: QR in three steps — scan, add, go, about two minutes.
  1. 1The plan card shows exactly what you're buying — data, days, destination.
  2. 2One tap starts the two-minute QR install.
vs roaming
esimgomobile eSIMone price
Carrier roamingper-day fees
10 GB · 14 days · Slovenia
The honest comparison on Developers · Slovenia: one prepaid eSIM price versus carrier roaming.
  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 50GB — Sloveniatotal
Taxescalculated
Pay securely
256-bit encrypted · Amazon Pay
Secure checkout on Developers · Slovenia: Atlas 50GB, 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.
Recent speeds
Rome285 Mbps
Paris294 Mbps
Bali936 Mbps
Recent speeds for Developers · Slovenia — Rome, Paris, Bali: 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?
close up view of the eiffel tower in paris
“Customs line in Slovenia was the perfect time to install — done by baggage claim.”
Aiko T.Verified traveler · Slovenia
Traveler review for Developers · Slovenia: “Customs line in Slovenia was the perfect time to install — done by baggage claim.” — Aiko T..
  1. 1Coverage status at a glance: data live, number available, 5G ready.
  2. 2Green means go — no guessing about what's supported.
Launch facts
195destinations live
31free tools
$8entry monthly plan
Launch facts behind Developers · Slovenia — 195 destinations live, 31 free tools, $8 entry monthly plan: numbers we publish and stand behind.
  1. 1Mockups illustrate the product flow — captions describe what's real.
  2. 2Figures labeled as examples show sample data, never live telemetry.
Network
5G
Slovenia connected
Network widget for Developers · Slovenia: 5G, full bars — zero ambiguity about the connection.
  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.
Coverage
195
destinations live
Slovenia5G ready
Check coverage
Coverage at a glance for Developers · Slovenia: 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.
Sjuan Dogjani — Developers · Slovenia: Café office: hotspot running, video call stable, no hotel Wi-Fi roulette.
Developers · Slovenia: Café office: hotspot running, video call stable, no hotel Wi-Fi roulette.
nighttime urban scene of japanese street and karaoke — Developers · Slovenia: Travelers stay online from the moment they land — no SIM queues, no roaming shock.
Developers · Slovenia: Travelers stay online from the moment they land — no SIM queues, no roaming shock.
Dr.Ramsinh Jadav — Developers · Slovenia: Coworking abroad: laptop tethered, calls crisp, deadlines met.
Developers · Slovenia: Coworking abroad: laptop tethered, calls crisp, deadlines met.
Antoine Pittet — Developers · Slovenia: Duty-free browsing: price-checked against home before buying.
Developers · Slovenia: Duty-free browsing: price-checked against home before buying.
Altaf Shah — Developers · Slovenia: The sunrise ferry: tickets in the wallet app, timetable cached offline.
Developers · Slovenia: The sunrise ferry: tickets in the wallet app, timetable cached offline.
close up photo of a woman holding the microphone of her black headset — Developers · Slovenia: Rate limits are generous and documented — no surprise 429s.
Developers · Slovenia: Rate limits are generous and documented — no surprise 429s.
affectionate mother and daughter — Developers · Slovenia: Every endpoint returns the same shape — learn one, know them all.
Developers · Slovenia: Every endpoint returns the same shape — learn one, know them all.
a person riding a bike on a grassy hill — Developers · Slovenia: Street level: navigation, rideshares and reviews, all instant.
Developers · Slovenia: Street level: navigation, rideshares and reviews, all instant.
airplane wing and thick clouds — Developers · Slovenia: Harbor views with full bars: coverage where travelers actually go.
Developers · Slovenia: Harbor views with full bars: coverage where travelers actually go.
anonymous ethnic worker writing near laptop on cafe terrace — Developers · Slovenia: Plazas and promenades: video calls home with the view behind you.
Developers · Slovenia: Plazas and promenades: video calls home with the view behind you.
aerial view from airplane over barren landscape — Developers · Slovenia: Rainy-day backup plan: indoor attractions researched from the hostel bunk.
Developers · Slovenia: Rainy-day backup plan: indoor attractions researched from the hostel bunk.
Hipster with a beard and sunglasses in a city square holding a smartphone. — Developers · Slovenia: The conference badge: QR ticket scanned, session schedule synced.
Developers · Slovenia: The conference badge: QR ticket scanned, session schedule synced.
close up of electronic circuit design on device — Developers · Slovenia: Sandbox first: test provisioning without spending a cent.
Developers · Slovenia: Sandbox first: test provisioning without spending a cent.
eiffel tower under blue sky — Developers · Slovenia: From departure lounge to arrival hall, the data never drops.
Developers · Slovenia: From departure lounge to arrival hall, the data never drops.
clouds seen from an airplane — Developers · Slovenia: The departure board flips: gate found, lounge located, all on the eSIM.
Developers · Slovenia: The departure board flips: gate found, lounge located, all on the eSIM.
pensive man looking at laptop — Developers · Slovenia: Night markets and late trains — connected the whole way through.
Developers · Slovenia: Night markets and late trains — connected the whole way through.
A person holding a smartphone in an airport with luggage visible, ideal for travel and tech concepts. — Developers · Slovenia: Family group chat: location shared, dinner plans settled in minutes.
Developers · Slovenia: Family group chat: location shared, dinner plans settled in minutes.
João Vítor Heinrichs — Developers · Slovenia: Sunrise hikes start with a weather check — data on, boots on.
Developers · Slovenia: Sunrise hikes start with a weather check — data on, boots on.
Jess Loiterton — Developers · Slovenia: The red-eye recovery: hotel early-check-in arranged mid-flight.
Developers · Slovenia: The red-eye recovery: hotel early-check-in arranged mid-flight.
Tobias Bjørkli — Developers · Slovenia: The business trip: client deck synced, video call joined from the taxi.
Developers · Slovenia: The business trip: client deck synced, video call joined from the taxi.

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. Pick your plan
    • Choose data for your trip length — 5 GB covers a long weekend, 20 GB a fortnight, 50 GB or Unlimited a month of heavy use.
    • Checkout takes about two minutes through the secure Amazon Pay checkout.
  2. Scan the QR code
    • Your eSIM arrives instantly. Open your phone camera, scan, and the plan installs itself.
    • No store visit, no plastic SIM, no waiting for the post.
  3. Land connected
    • Turn on data roaming for the eSIM line when you land — you're online before baggage claim.
    • The eSIM finds the local partner network automatically.

Explainer

Good to know

  • Turn off auto-play on social apps before you fly; it quietly eats roaming data.
  • Set a data alert at 80% so a top-up never surprises you mid-trip.
  • 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.
  • Download offline maps for your destination — they save data and work in dead zones.
  • Check that your phone is carrier-unlocked before you buy any eSIM — locked phones can't add one.

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.

See the math

Slovenia, 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.
esimgomobile Developers: capability profileWhat the tool is good at — illustrative profileCapability profileFive strengths, ranked by what users feel first.Instant resultsno waiting, no signupShares wellsend the answer to travel companionsAlways currentreflects live plans and coveragePrivate by designyour inputs stay in your browserMobile friendlyworks on the phone in your handIllustrative profile based on tool design — not measured telemetry.
Capability profile. Ranked by what travelers notice first, not by marketing priority.
Plan comparison matrixEvery plan for Slovenia — data, validity, best fitPlans at a glanceFour prepaid plans cover every kind of trip to Slovenia.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. Weekend sips, fortnight data, work-month gulps, or unlimited — pick by trip shape.
Pro tipsFour habits of the always-connectedPro tipsSmall habits, big difference.1Set an 80% alertA top-up should never surprise you mid-trip.2Check unlock statusCarrier-locked phones can't add an eSIM — verify first.3Screenshot bookingsHotel address & confirmations, available with no signal.4Install before you flyAirport Wi-Fi is the worst place to set up connectivity.
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. A 20 GB plan covers roughly two weeks of normal travel use.
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. Every tool on esimgomobile follows the same honest pattern: input, math, answer.
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.
Do I keep my number?
Yes — WhatsApp & iMessage keep working on your existing number.
Is it a contract?
No — prepaid. Service simply stops instead of charging extra.
Does hotspot work?
Yes — share your connection with laptop or tablet.
How fast is setup?
About two minutes: plan, QR scan, done.
FAQ at a glance. Short answers, no sales pitch — the questions first, always.
Network at a glanceCoverage facts for SloveniaNetwork at a glanceThe numbers that matter before you buy.195destinations liveesimgomobile network data5Gwhere available in Sloveniaesimgomobile 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 · Slovenia: 195 destinations, 5G where available, six languages.
Who it's forFour travelers, one toolWho it's forBuilt for real trip shapes, not personas.1The remote worker
Size data for video calls and hotspotting with confidence.
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 family organizer
One tool, every traveler's needs covered.
esimgomobile network data
Use cases. Six traveler shapes, one tool — Developers · Slovenia's use cases.
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.
Every plan includesNo tiers of basic dignity — these ship with all plansEvery plan includesThe baseline is generous on purpose.One-tap top-upMore data in seconds — no new QR code.5G where availableFastest local partner network, selected automatically.6 languagesThe app speaks your language, wherever you're from.24/7 supportReal humans plus the Tele Agent, around the clock.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 · Slovenia baseline, generous on purpose.

Ready when Slovenia is

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

See plans and pricing Talk to the Tele Agent