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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 Guatemala

Using developers in Guatemala? You are on the local edition — key facts for Guatemala (capital Guatemala City, dial code +502) are below. esimgomobile plans for Guatemala are live now — monthly plans from $8/mo and one-time travel packs from $3.65, with live checkout.

CapitalGuatemala City
Dial code+502
CurrencyGuatemalan quetzal (GTQ)
Time zoneUTC-6
Main languagesSpanish

Plans are live — see plans and pricing.

See it live

esimgomobile in action.

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

male hiker standing on the rock overlooking the green mountains
“Switched plans mid-trip in Guatemala. Took about a minute.”
Omar H.Verified traveler · Guatemala
Traveler review for Developers · Guatemala: “Switched plans mid-trip in Guatemala. Took about a minute.” — Omar H..
  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
What happens when my data runs out in Guatemala?
You get a heads-up at 80%, then one-tap top-up. No roaming-bill surprises in Guatemala.
Tele Agent chat on Developers · Guatemala — 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.
eSIM plan
Atlas 50GB50 GB · 60 days
Guatemala
Install eSIM
Atlas 50GB on Developers · Guatemala — 50 GB · 60 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.
esimgomobile.com
Plans for Guatemala
Atlas 5GB5 GB · 30 days
Atlas 20GB20 GB · 30 days
Atlas 50GB50 GB · 60 days
Compare plans
Plan picker on Developers · Guatemala: 5GB, 20GB, 50GB and Unlimited — pick by trip, not fine print.
  1. 1Checkout shows the full price before you pay. Nothing hidden.
  2. 2Amazon Pay handles payment securely; taxes are calculated for you.
eSIM installedYour Guatemala plan is ready.
Push · just now
Push notification on Developers · Guatemala: 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
Checkout
Atlas 20GB — Guatemalatotal
Taxescalculated
Pay securely
256-bit encrypted · Amazon Pay
Secure checkout on Developers · Guatemala: Atlas 20GB, 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.
esimgomobile.com
Dashboard
Active eSIMs3
Data left10 GB
Current cityGuatemala
Web dashboard on Developers · Guatemala: every eSIM, every trip, 10 GB left — one screen.
  1. 1Checkout shows the full price before you pay. Nothing hidden.
  2. 2Amazon Pay handles payment securely; taxes are calculated for you.
people in airport terminal
Guatemala is calling.
Get your eSIM
Live now · no waitlist
“Guatemala is calling.” — the CTA card on Developers · Guatemala: plans live now, no waitlist.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
Speed test
737Mbps
5G · Guatemala · 23 ms
Illustrative speed readout on Developers · Guatemala: 737 Mbps, 23 ms — example figures, not live measurements.
  1. 1The Tele Agent answers in plain language — no telecom jargon.
  2. 2Every answer is specific to your trip, not a generic FAQ.
Recent speeds
Cairo359 Mbps
Mexico City656 Mbps
Marrakech462 Mbps
Recent speeds for Developers · Guatemala — Cairo, Mexico City, Marrakech: 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?
My eSIM
40%10 GB left
Days left19
Top up+10 GB
Data dashboard on Developers · Guatemala: 40% 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.
Why travelers pick it
  • One-tap top-up
  • 5G where available
  • Keep WhatsApp number
Why travelers pick Developers · Guatemala: One-tap top-up, 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.
Network
5G
Guatemala connected
Network widget for Developers · Guatemala: 5G, full bars — zero ambiguity about the connection.
  1. 1Illustrative speed readout: sample carrier, city and latency figures.
  2. 2The meter demonstrates the readout — figures are examples, not live measurements.
esimgomobile.com
API quickstart
curl https://api.esimgomobile.com/v1/esims \
  -H "Authorization: Bearer $KEY" \
  -d '{"country":"GU"}'
200 OK · 146 ms
REST API behind Developers · Guatemala: issue eSIMs programmatically — 200 OK in milliseconds.
  1. 1Checkout shows the full price before you pay. Nothing hidden.
  2. 2Amazon Pay handles payment securely; taxes are calculated for you.
Coverage
195
destinations live
Guatemala5G ready
Check coverage
Coverage at a glance for Developers · Guatemala: 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.
Language
DeutschFrançaisEspañol
Language picker on Developers · Guatemala — Deutsch, Français, Español: the app speaks six languages.
  1. 1Usage ring compresses the whole plan into one glanceable number.
  2. 2Percent remaining is the only metric most travelers check.
Install
1 Scan2 Add3 Go
The Developers · Guatemala 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.
esimgomobile.com
eiffel tower
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.
Tele Agent transcript
Will my phone work in Guatemala?
If it's carrier-unlocked and eSIM-capable, yes. I checked Guatemala bands — you're covered.
Tele Agent transcript on Developers · Guatemala: 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.
Marcus L.
Get connected
1 Pick a plan2 Scan QR3 Land online
Three steps on Developers · Guatemala: pick a plan, scan the QR, land online.
  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.
laughing man and woman working in a call center — Developers · Guatemala: Every endpoint returns the same shape — learn one, know them all.
Developers · Guatemala: Every endpoint returns the same shape — learn one, know them all.
Mikhail Nilov — Developers · Guatemala: Lost in the medina, found by GPS: the blue dot never lies.
Developers · Guatemala: Lost in the medina, found by GPS: the blue dot never lies.
person taking photo at book — Developers · Guatemala: City lights after dark — the eSIM doesn't care what time it is.
Developers · Guatemala: City lights after dark — the eSIM doesn't care what time it is.
Jason Pittman — Developers · Guatemala: Golden hour, fully online — photo backups upload before dinner.
Developers · Guatemala: Golden hour, fully online — photo backups upload before dinner.
father and child holding hands at airport window — Developers · Guatemala: The red-eye recovery: hotel early-check-in arranged mid-flight.
Developers · Guatemala: The red-eye recovery: hotel early-check-in arranged mid-flight.
vibrant neon cityscape of tokyo at night — Developers · Guatemala: Migrate from Twilio in three steps — the toolkit does the heavy lifting.
Developers · Guatemala: Migrate from Twilio in three steps — the toolkit does the heavy lifting.
grayscale photograph of high rise buildings in new york — Developers · Guatemala: The last night: photo album backed up, memories safe before wheels-up.
Developers · Guatemala: The last night: photo album backed up, memories safe before wheels-up.
man in black jacket sitting on brown wooden folding chair using macbook — Developers · Guatemala: Travelers stay online from the moment they land — no SIM queues, no roaming shock.
Developers · Guatemala: Travelers stay online from the moment they land — no SIM queues, no roaming shock.
Person photographing a beautiful mountain lake view with a smartphone, enjoying outdoor adventure. — Developers · Guatemala: SDKs, a CLI, and an MCP server — the developer surface, complete.
Developers · Guatemala: SDKs, a CLI, and an MCP server — the developer surface, complete.
wing of a flying passenger airplane — Developers · Guatemala: API keys rotate in one click — the dashboard makes it boring.
Developers · Guatemala: API keys rotate in one click — the dashboard makes it boring.
one wtc in nyc — Developers · Guatemala: The API issues eSIMs the way your app issues everything else — over HTTPS.
Developers · Guatemala: The API issues eSIMs the way your app issues everything else — over HTTPS.
Ignacio Estevo — Developers · Guatemala: The commute, handled: podcasts downloaded, messages sent, no dead zones.
Developers · Guatemala: The commute, handled: podcasts downloaded, messages sent, no dead zones.
crop woman making video call on laptop — Developers · Guatemala: From departure lounge to arrival hall, the data never drops.
Developers · Guatemala: From departure lounge to arrival hall, the data never drops.
view from an airplane window — Developers · Guatemala: The departure board flips: gate found, lounge located, all on the eSIM.
Developers · Guatemala: The departure board flips: gate found, lounge located, all on the eSIM.
Atlantic Ambience — Developers · Guatemala: Currency exchange, skipped: the phone pays at the real rate.
Developers · Guatemala: Currency exchange, skipped: the phone pays at the real rate.
person holding smartphone with stylish case — Developers · Guatemala: Café office: hotspot running, video call stable, no hotel Wi-Fi roulette.
Developers · Guatemala: Café office: hotspot running, video call stable, no hotel Wi-Fi roulette.
Rene Terp — Developers · Guatemala: Night markets and late trains — connected the whole way through.
Developers · Guatemala: Night markets and late trains — connected the whole way through.
mother and son waiting at the airport — Developers · Guatemala: The food tour: every recommendation looked up on the spot.
Developers · Guatemala: The food tour: every recommendation looked up on the spot.
eiffel tower with parisian architecture — Developers · Guatemala: The long layover: streaming, working and messaging, all covered.
Developers · Guatemala: The long layover: streaming, working and messaging, all covered.
silhouette of city buildings during sunset — Developers · Guatemala: The business trip: client deck synced, video call joined from the taxi.
Developers · Guatemala: 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 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.

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.

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

  • 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.
  • Keep your home SIM active for two-factor codes from your bank; run data on the eSIM line.
  • If a page won't load, toggle airplane mode for ten seconds — it forces a fresh network attach.
  • Hotspot sparingly: one laptop tethered all day can burn through a week of phone data.
  • Buy and install your eSIM before departure — airport Wi-Fi is the worst place to set up connectivity.

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.

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.

Visual guides

Guatemala, 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.
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 planner
Compare before you commit — know the right plan weeks ahead.
esimgomobile network data3The family organizer
One tool, every traveler's needs covered.
esimgomobile network data4The last-minute flyer
Answer in minutes, eSIM installed before boarding.
esimgomobile network data
Use cases. Planners, sprinters, remote workers, families — who's it for.
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.
What if data runs out?
80% alert, then one-tap top-up. No bill shock.
Does hotspot work?
Yes — share your connection with laptop or tablet.
How fast is setup?
About two minutes: plan, QR scan, done.
Which phones work?
Any carrier-unlocked, eSIM-capable iPhone or Android.
Is it a contract?
No — prepaid. Service simply stops instead of charging extra.
FAQ at a glance. Six questions every traveler asks — the Developers · Guatemala answers, one screen.
Network at a glanceCoverage facts for GuatemalaNetwork at a glanceThe numbers that matter before you buy.195destinations liveesimgomobile network data5Gwhere available in Guatemalaesimgomobile 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 · Guatemala: 195 destinations, 5G where available, six languages.
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.
Plan comparison matrixEvery plan for Guatemala — data, validity, best fitPlans at a glanceFour prepaid plans cover every kind of trip to Guatemala.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. All four Atlas plans work in Guatemala; pick by trip length and appetite for data.
Every plan includesNo tiers of basic dignity — these ship with all plansEvery plan includesThe baseline is generous on purpose.Hotspot includedShare with your laptop or tablet at no extra cost.6 languagesThe app speaks your language, wherever you're from.Keep your WhatsAppYour existing number keeps working on the data line.5G where availableFastest local partner network, selected automatically.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. Six things ship with every plan — the Developers · Guatemala baseline, generous on purpose.
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 · Guatemala usage guide.
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.2Keep home SIM for 2FABank codes still arrive while data runs on the eSIM.3Check unlock statusCarrier-locked phones can't add an eSIM — verify first.4Screenshot bookingsHotel address & confirmations, available with no signal.
Pro tips. Veterans do all four without thinking.
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 handInstant resultsno waiting, no signupShares wellsend the answer to travel companionsAlways currentreflects live plans and coveragePrivate by designyour inputs stay in your browserIllustrative profile based on tool design — not measured telemetry.
Capability profile. What Developers · Guatemala does best — the capability profile, honestly ranked.
How esimgomobile Developers worksFour steps from question to answerHow this tool worksBuilt to answer one question well.1Open the toolNo account needed — it loads instantly in your browser.2Enter your detailsTrip, data needs, destination. The tool does the math.3Apply itJump straight to the plan, setting or page it points to.4Get the answerClear result with next steps — save it or act on it.
Tool walkthrough. Four steps from landing on Developers · Guatemala to having your answer.

Ready when Guatemala is

Pick a plan, check out securely, scan the QR code — you're online before you land.

See plans and pricing Talk to the Tele Agent