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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 Tuvalu

Using developers in Tuvalu? You are on the local edition — key facts for Tuvalu (capital Funafuti, dial code +688) are below. esimgomobile plans for Tuvalu are live now — monthly plans from $8/mo and one-time travel packs from $3.65, with live checkout.

CapitalFunafuti
Dial code+688
CurrencyAustralian dollar (AUD)
Time zoneUTC+12
Main languagesEnglish

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.

esimgomobile.com
backpack on suitcase on airport
esimgomobile Developers
Travel guides · 8 min read
From the blog: “esimgomobile Developers” — travel guides in about eight minutes.
  1. 1Three plans side by side so the trade-off is obvious.
  2. 2Pick by trip length, not by decoding fine print.
Blue and White Sea Foam
“Switched plans mid-trip in Tuvalu. Took about a minute.”
Maya R.Verified traveler · Tuvalu
Traveler review for Developers · Tuvalu: “Switched plans mid-trip in Tuvalu. Took about a minute.” — Maya R..
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
Install
1 Scan2 Add3 Go
The Developers · Tuvalu 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.
Tele Agent
“Setting up your Tuvalu line…”
AI voice agent on Developers · Tuvalu — answers spoken aloud, never a support ticket.
  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.
man and woman wearing headphones while working in the office
Tuvalu
eSIM dataLive
Local numberAvailable
5GYes
Coverage card on Developers · Tuvalu: 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.
Recent speeds
Tokyo305 Mbps
Mexico City181 Mbps
Sydney462 Mbps
Recent speeds for Developers · Tuvalu — Tokyo, Mexico City, Sydney: illustrative 5G figures, not live measurements.
  1. 1Mockups illustrate the product flow — captions describe what's real.
  2. 2Figures labeled as examples show sample data, never live telemetry.
Support
How does Developers · Tuvalu work?
Enter your trip details and get an instant answer — no account needed.
Support snippet — Developers · Tuvalu: 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.
esimgomobile.com
Plans for Tuvalu
Atlas 5GB5 GB · 30 days
Atlas 20GB20 GB · 30 days
Atlas 50GB50 GB · 60 days
Compare plans
Plan picker on Developers · Tuvalu: 5GB, 20GB, 50GB and Unlimited — pick by trip, not fine print.
  1. 1Three plans side by side so the trade-off is obvious.
  2. 2Pick by trip length, not by decoding fine print.
Why travelers pick it
  • Hotspot included
  • Keep WhatsApp number
  • 5G where available
Why travelers pick Developers · Tuvalu: Hotspot included, 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.
Virtual number
+1 205 428 9232
Routes toTuvalu
SMS + voiceEnabled
Your second line on Developers · Tuvalu: +1 205 428 9232 — 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.
Launch facts
195destinations live
31free tools
$8entry monthly plan
Launch facts behind Developers · Tuvalu — 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
Can I keep my WhatsApp number?
Yes — your eSIM is data-first, so WhatsApp keeps working on your existing number in Tuvalu.
Tele Agent chat on Developers · Tuvalu — 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.
90%
data left
Usage ring on Developers · Tuvalu — 90% 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.
Speed test
328Mbps
5G · Tuvalu · 26 ms
Illustrative speed readout on Developers · Tuvalu: 328 Mbps, 26 ms — example figures, not live measurements.
  1. 1Illustrative speed readout: sample carrier, city and latency figures.
  2. 2The meter demonstrates the readout — figures are examples, not live measurements.
Marcus L.
Get connected
1 Pick a plan2 Scan QR3 Land online
Three steps on Developers · Tuvalu: 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.
esimgomobile.com
Dashboard
Active eSIMs2
Data left10 GB
Current cityTuvalu
Web dashboard on Developers · Tuvalu: every eSIM, every trip, 10 GB left — one screen.
  1. 1Three plans side by side so the trade-off is obvious.
  2. 2Pick by trip length, not by decoding fine print.
Saila Holidays Zanzibar
Pack light. Stay connected in Tuvalu.
Get your eSIM
Live now · no waitlist
“Pack light. Stay connected in Tuvalu.” — the CTA card on Developers · Tuvalu: plans live now, no waitlist.
  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.
iconic eiffel tower in summer foliage
Your Tuvalu number is waiting.
Get your eSIM
“Your Tuvalu number is waiting.” — the banner on Developers · Tuvalu: 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?
Tuvalu · coverage
5 carriers · automatic selection
Coverage map on Developers · Tuvalu: 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?
eSIM plan
Atlas 5GB5 GB · 30 days
Tuvalu
Install eSIM
Atlas 5GB on Developers · Tuvalu — 5 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.
Shreyaan Vashishtha — Developers · Tuvalu: Rain or shine, the connection holds — weather doesn't throttle data.
Developers · Tuvalu: Rain or shine, the connection holds — weather doesn't throttle data.
Jess Loiterton — Developers · Tuvalu: The night bus: entertainment downloaded, messages queued, rest easy.
Developers · Tuvalu: The night bus: entertainment downloaded, messages queued, rest easy.
woman in brown t shirt pushing her pink luggage and man in black long sleeves pushing trolley — Developers · Tuvalu: The API issues eSIMs the way your app issues everything else — over HTTPS.
Developers · Tuvalu: The API issues eSIMs the way your app issues everything else — over HTTPS.
cute little girl with suitcase and passport — Developers · Tuvalu: The commute, handled: podcasts downloaded, messages sent, no dead zones.
Developers · Tuvalu: The commute, handled: podcasts downloaded, messages sent, no dead zones.
four people wearing headphones — Developers · Tuvalu: The welcome home: eSIM deleted in one tap, no contract to cancel.
Developers · Tuvalu: The welcome home: eSIM deleted in one tap, no contract to cancel.
silhouette of 2 men and woman standing on beach during sunset — Developers · Tuvalu: Coast roads and country lanes — the map keeps up wherever you roam.
Developers · Tuvalu: Coast roads and country lanes — the map keeps up wherever you roam.
smiling women on beach in fog — Developers · Tuvalu: Lost in the medina, found by GPS: the blue dot never lies.
Developers · Tuvalu: Lost in the medina, found by GPS: the blue dot never lies.
person standing on the mountain — Developers · Tuvalu: Old town, new tricks: translation apps working in real time.
Developers · Tuvalu: Old town, new tricks: translation apps working in real time.
a group of people wearing headsets — Developers · Tuvalu: The rental desk handshake: confirmation email open, license photo ready.
Developers · Tuvalu: The rental desk handshake: confirmation email open, license photo ready.
woman admiring snow capped mountain view — Developers · Tuvalu: Rooftop check-in: boarding passes and hotel keys, all on the phone.
Developers · Tuvalu: Rooftop check-in: boarding passes and hotel keys, all on the phone.
a group of men on the beach playing soccer — Developers · Tuvalu: Build on the same rails the Tuvalu checkout uses.
Developers · Tuvalu: Build on the same rails the Tuvalu checkout uses.
Ariel Raz — Developers · Tuvalu: Every endpoint returns the same shape — learn one, know them all.
Developers · Tuvalu: Every endpoint returns the same shape — learn one, know them all.
a man in white crew neck shirt wearing black headphones — Developers · Tuvalu: Sunrise hikes start with a weather check — data on, boots on.
Developers · Tuvalu: Sunrise hikes start with a weather check — data on, boots on.
Roy Serafin — Developers · Tuvalu: The red-eye recovery: hotel early-check-in arranged mid-flight.
Developers · Tuvalu: The red-eye recovery: hotel early-check-in arranged mid-flight.
Stan Versluis — Developers · Tuvalu: Trailheads and lookouts: offline maps downloaded, just in case.
Developers · Tuvalu: Trailheads and lookouts: offline maps downloaded, just in case.
woman doing paperwork — Developers · Tuvalu: Sandbox first: test provisioning without spending a cent.
Developers · Tuvalu: Sandbox first: test provisioning without spending a cent.
AMITR MEENA (AMMY) — Developers · Tuvalu: Café office: hotspot running, video call stable, no hotel Wi-Fi roulette.
Developers · Tuvalu: Café office: hotspot running, video call stable, no hotel Wi-Fi roulette.
employees busy working inside an office — Developers · Tuvalu: Plazas and promenades: video calls home with the view behind you.
Developers · Tuvalu: Plazas and promenades: video calls home with the view behind you.
hiking adventure in rudra nath india — Developers · Tuvalu: The last night: photo album backed up, memories safe before wheels-up.
Developers · Tuvalu: The last night: photo album backed up, memories safe before wheels-up.
back camera of a smartphone in close up photography — Developers · Tuvalu: The group chat stays live across every border you cross.
Developers · Tuvalu: The group chat stays live across every border you cross.

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. 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

  • Screenshot your hotel address and booking confirmations — you'll want them with no signal.
  • WhatsApp, iMessage and FaceTime keep your existing number on a data eSIM — no need to tell anyone a new number.
  • Buy and install your eSIM before departure — airport Wi-Fi is the worst place to set up connectivity.
  • Charge your phone before long travel days; weak signal areas drain batteries faster.
  • Save your eSIM QR code somewhere safe (email it to yourself) in case you switch phones mid-trip.
  • 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

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

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

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.

Charts & explainers

The numbers behind Tuvalu.

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.2Install before you flyAirport Wi-Fi is the worst place to set up connectivity.3Screenshot bookingsHotel address & confirmations, available with no signal.4Download offline mapsThey save data and work in dead zones.
Pro tips. The small things that separate smooth trips from stressful ones.
Plan comparison matrixEvery plan for Tuvalu — data, validity, best fitPlans at a glanceFour prepaid plans cover every kind of trip to Tuvalu.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 · Tuvalu: 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. A 20 GB plan covers roughly two weeks of normal travel use.
esimgomobile Developers: capability profileWhat the tool is good at — illustrative profileCapability profileFive strengths, ranked by what users feel first.Mobile friendlyworks on the phone in your handAlways currentreflects live plans and coveragePrivate by designyour inputs stay in your browserShares wellsend the answer to travel companionsInstant resultsno waiting, no signupIllustrative profile based on tool design — not measured telemetry.
Capability profile. Capabilities measured by traveler value, not feature count.
Every plan includesNo tiers of basic dignity — these ship with all plansEvery plan includesThe baseline is generous on purpose.5G where availableFastest local partner network, selected automatically.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.6 languagesThe app speaks your language, wherever you're from.One-tap top-upMore data in seconds — no new QR code.
Included with every plan. Six things ship with every plan — the Developers · Tuvalu baseline, generous on purpose.
How esimgomobile Developers worksFour steps from question to answerHow this tool worksBuilt to answer one question well.1Get the answerClear result with next steps — save it or act on it.2Enter your detailsTrip, data needs, destination. The tool does the math.3Open the toolNo account needed — it loads instantly in your browser.4Apply itJump straight to the plan, setting or page it points to.
Tool walkthrough. Four steps from landing on Developers · Tuvalu to having your answer.
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. Buy, scan, land: the whole sequence fits in a coffee queue.
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 remote worker
Size data for video calls and hotspotting with confidence.
esimgomobile network data3The last-minute flyer
Answer in minutes, eSIM installed before boarding.
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 · Tuvalu's use cases.
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.
Does hotspot work?
Yes — share your connection with laptop or tablet.
Do I keep my number?
Yes — WhatsApp & iMessage keep working on your existing number.
Is it a contract?
No — prepaid. Service simply stops instead of charging extra.
How fast is setup?
About two minutes: plan, QR scan, done.
FAQ at a glance. Still curious? The Tele Agent answers anything else instantly.
Network at a glanceCoverage facts for TuvaluNetwork at a glanceThe numbers that matter before you buy.195destinations liveesimgomobile network data5Gwhere available in Tuvaluesimgomobile 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. Tuvalu connects to the fastest available local partner network automatically.

Start your Tuvalu trip online

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