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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 Grenada

Using developers in Grenada? You are on the local edition — key facts for Grenada (capital St. George's, dial code +1-473) are below. esimgomobile plans for Grenada are live now — monthly plans from $8/mo and one-time travel packs from $3.65, with live checkout.

CapitalSt. George's
Dial code+1-473
CurrencyEastern Caribbean dollar (XCD)
Time zoneUTC-4
Main languagesEnglish

Plans are live — see plans and pricing.

Product tour

The product, up close.

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

Virtual number
+1 205 128 2766
Routes toGrenada
SMS + voiceEnabled
Your second line on Developers · Grenada: +1 205 128 2766 — real number, SMS and voice enabled.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
vs roaming
esimgomobile eSIMone price
Carrier roamingper-day fees
10 GB · 14 days · Grenada
The honest comparison on Developers · Grenada: one prepaid eSIM price versus carrier roaming.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
esimgomobile.com
church tower against a clear sky
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
“Setting up your Grenada line…”
AI voice agent on Developers · Grenada — 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.
eSIM plan
Atlas 20GB20 GB · 30 days
Grenada
Install eSIM
Atlas 20GB on Developers · Grenada — 20 GB · 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.
esimgomobile.com
Plans for Grenada
Atlas 5GB5 GB · 30 days
Atlas 20GB20 GB · 30 days
Atlas 50GB50 GB · 60 days
Compare plans
Plan picker on Developers · Grenada: 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.
$8
entry monthly plan
launch fact
Launch fact behind Developers · Grenada: $8 entry monthly plan — 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.
Atlas 50GB
50 GB · 60 days
Grenada
Atlas 50GB — 50 GB · 60 days, prepaid and ready on Developers · Grenada.
  1. 1The plan chip: name, allowance and destination in one line.
  2. 2Everything you need to confirm you're on the right plan.
Why travelers pick it
  • Hotspot included
  • One-tap top-up
  • 24/7 support
Why travelers pick Developers · Grenada: Hotspot included, One-tap top-up, 24/7 support.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
Recent speeds
Bali542 Mbps
Mexico City604 Mbps
Mexico City278 Mbps
Recent speeds for Developers · Grenada — Bali, Mexico City, Mexico City: 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?
Rene Terp
Your Grenada number is waiting.
Get your eSIM
Live now · no waitlist
“Your Grenada number is waiting.” — the CTA card on Developers · Grenada: plans live now, no waitlist.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
snowy mountains view from airplane window
Get connected
1 Pick a plan2 Scan QR3 Land online
Three steps on Developers · Grenada: 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.
Install
1 Scan2 Add3 Go
The Developers · Grenada install: QR in three steps — scan, add, go, about two minutes.
  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.
Speed test
229Mbps
5G · Grenada · 82 ms
Illustrative speed readout on Developers · Grenada: 229 Mbps, 82 ms — example figures, not live measurements.
  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.
Grenada · coverage
5 carriers · automatic selection
Coverage map on Developers · Grenada: partner networks pinned, selection automatic.
  1. 1Coverage pins show where partner networks are live.
  2. 2The map answers the only question that matters: will it work there?
My eSIM
82%50 GB left
Days left12
Top up+10 GB
Data dashboard on Developers · Grenada: 82% remaining, days left, top-up one tap away.
  1. 1The Tele Agent answers in plain language — no telecom jargon.
  2. 2Every answer is specific to your trip, not a generic FAQ.
white airplane wing
Grenada is calling.
Get your eSIM
“Grenada is calling.” — the banner on Developers · Grenada: 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?
Language
FrançaisEspañolDeutsch
Language picker on Developers · Grenada — Français, Español, Deutsch: 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.
Support
How does Developers · Grenada work?
Enter your trip details and get an instant answer — no account needed.
Support snippet — Developers · Grenada: 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.
68%
data left
Usage ring on Developers · Grenada — 68% of data left: the number travelers check most.
  1. 1Signal widget: network generation and destination, always visible.
  2. 2Five bars, zero ambiguity about what you're connected to.
man using macbook on wooden table — Developers · Grenada: Café office: hotspot running, video call stable, no hotel Wi-Fi roulette.
Developers · Grenada: Café office: hotspot running, video call stable, no hotel Wi-Fi roulette.
bustling night market street in tokyo — Developers · Grenada: Sandbox first: test provisioning without spending a cent.
Developers · Grenada: Sandbox first: test provisioning without spending a cent.
Kyle Karbowski — Developers · Grenada: Coast roads and country lanes — the map keeps up wherever you roam.
Developers · Grenada: Coast roads and country lanes — the map keeps up wherever you roam.
behind of woman gesturing — Developers · Grenada: Hiking the ridge: trail map offline, emergency numbers saved.
Developers · Grenada: Hiking the ridge: trail map offline, emergency numbers saved.
A woman sitting comfortably on a ferry, enjoying a peaceful journey. — Developers · Grenada: Island time, online time: ferries, beaches and full signal.
Developers · Grenada: Island time, online time: ferries, beaches and full signal.
photo of man using laptop — Developers · Grenada: The business trip: client deck synced, video call joined from the taxi.
Developers · Grenada: The business trip: client deck synced, video call joined from the taxi.
smiling women on beach in fog — Developers · Grenada: Souvenir hunting with live currency conversion in your pocket.
Developers · Grenada: Souvenir hunting with live currency conversion in your pocket.
person using smartphone with green screen at desk — Developers · Grenada: Duty-free browsing: price-checked against home before buying.
Developers · Grenada: Duty-free browsing: price-checked against home before buying.
adventurous hiker exploring misty mountain trail — Developers · Grenada: Border crossings without the paperwork shuffle: ID photos stored on the phone.
Developers · Grenada: Border crossings without the paperwork shuffle: ID photos stored on the phone.
outdoor workspace with coffee and laptop — Developers · Grenada: Webhooks tell you when data runs low, plans expire, top-ups land.
Developers · Grenada: Webhooks tell you when data runs low, plans expire, top-ups land.
Pok Rie — Developers · Grenada: Platform to platform: tickets, timetables and taxis in one hand.
Developers · Grenada: Platform to platform: tickets, timetables and taxis in one hand.
man using laptop computer — Developers · Grenada: City lights after dark — the eSIM doesn't care what time it is.
Developers · Grenada: City lights after dark — the eSIM doesn't care what time it is.
Dajana Reçi — Developers · Grenada: The museum queue skips itself: tickets bought online, straight to the door.
Developers · Grenada: The museum queue skips itself: tickets bought online, straight to the door.
woman doing paperwork — Developers · Grenada: The window seat office: emails sent somewhere over the ocean.
Developers · Grenada: The window seat office: emails sent somewhere over the ocean.
wing of a flying passenger airplane — Developers · Grenada: Every endpoint returns the same shape — learn one, know them all.
Developers · Grenada: Every endpoint returns the same shape — learn one, know them all.
mother and daughter watching planes at an airport — Developers · Grenada: Golden hour, fully online — photo backups upload before dinner.
Developers · Grenada: Golden hour, fully online — photo backups upload before dinner.
scenic view of santorini s iconic blue domes — Developers · Grenada: Rate limits are generous and documented — no surprise 429s.
Developers · Grenada: Rate limits are generous and documented — no surprise 429s.
Oleksiy Yeshtokyn,🌻🇺🇦🌻 — Developers · Grenada: Rain or shine, the connection holds — weather doesn't throttle data.
Developers · Grenada: Rain or shine, the connection holds — weather doesn't throttle data.
A couple enjoying a sunny day with smartphones and wine glasses on a rooftop in Portugal. — Developers · Grenada: From departure lounge to arrival hall, the data never drops.
Developers · Grenada: From departure lounge to arrival hall, the data never drops.
a man in sunglasses and a shirt is standing on the beach with another man — Developers · Grenada: Coworking abroad: laptop tethered, calls crisp, deadlines met.
Developers · Grenada: Coworking abroad: laptop tethered, calls crisp, deadlines met.

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.

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.

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

  • Hotspot sparingly: one laptop tethered all day can burn through a week of phone data.
  • If a page won't load, toggle airplane mode for ten seconds — it forces a fresh network attach.
  • 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.
  • Check that your phone is carrier-unlocked before you buy any eSIM — locked phones can't add one.
  • Save your eSIM QR code somewhere safe (email it to yourself) in case you switch phones mid-trip.

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

Every chart that matters for Grenada.

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.
Questions, answeredThe six things everyone asks firstQuestions, answeredShort answers, no sales pitch.Does hotspot work?
Yes — share your connection with laptop or tablet.
Is it a contract?
No — prepaid. Service simply stops instead of charging extra.
Which phones work?
Any carrier-unlocked, eSIM-capable iPhone or Android.
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.
How fast is setup?
About two minutes: plan, QR scan, done.
FAQ at a glance. Short answers, no sales pitch — the questions first, always.
Every plan includesNo tiers of basic dignity — these ship with all plansEvery plan includesThe baseline is generous on purpose.6 languagesThe app speaks your language, wherever you're from.5G where availableFastest local partner network, selected automatically.Keep your WhatsAppYour existing number keeps working on the data line.One-tap top-upMore data in seconds — no new QR code.Hotspot includedShare with your laptop or tablet at no extra cost.24/7 supportReal humans plus the Tele Agent, around the clock.
Included with every plan. From 5 GB to Unlimited, the inclusions don't shrink.
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.
Plan comparison matrixEvery plan for Grenada — data, validity, best fitPlans at a glanceFour prepaid plans cover every kind of trip to Grenada.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.
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.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.4Enter your detailsTrip, data needs, destination. The tool does the math.
Tool walkthrough. Four steps from landing on Developers · Grenada to having your answer.
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.Mobile friendlyworks on the phone in your handShares wellsend the answer to travel companionsInstant resultsno waiting, no signupAlways currentreflects live plans and coveragePrivate by designyour inputs stay in your browserIllustrative profile based on tool design — not measured telemetry.
Capability profile. What Developers · Grenada does best — the capability profile, honestly ranked.
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 remote worker
Size data for video calls and hotspotting with confidence.
esimgomobile network data4The planner
Compare before you commit — know the right plan weeks ahead.
esimgomobile network data
Use cases. Six traveler shapes, one tool — Developers · Grenada'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.2Land connectedSwitch the line on when you arrive — online before baggage claim.3Scan the QR codeThe eSIM installs straight onto your phone. No store, no plastic SIM.
Three-step setup. Install days before departure or minutes before boarding — your call.
Network at a glanceCoverage facts for GrenadaNetwork at a glanceThe numbers that matter before you buy.195destinations liveesimgomobile network data5Gwhere available in Grenadaesimgomobile 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 · Grenada: 195 destinations, 5G where available, six languages.

Take Grenada with you, connected

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

See plans and pricing Talk to the Tele Agent