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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 Nauru

Using developers in Nauru? You are on the local edition — key facts for Nauru (capital Yaren, dial code +674) are below. esimgomobile plans for Nauru are live now — monthly plans from $8/mo and one-time travel packs from $3.65, with live checkout.

CapitalYaren
Dial code+674
CurrencyAustralian dollar (AUD)
Time zoneUTC+12
Main languagesEnglish, Nauruan

Plans are live — see plans and pricing.

See it live

The product, up close.

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

Why travelers pick it
  • Instant QR install
  • 24/7 support
  • Hotspot included
Why travelers pick Developers · Nauru: Instant QR install, 24/7 support, Hotspot included.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
Virtual number
+1 205 725 1688
Routes toNauru
SMS + voiceEnabled
Your second line on Developers · Nauru: +1 205 725 1688 — 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.
esimgomobile.com
Plans for Nauru
Atlas 5GB5 GB · 30 days
Atlas 20GB20 GB · 30 days
Atlas 50GB50 GB · 60 days
Compare plans
Plan picker on Developers · Nauru: 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.
Atlas Unlimited
Unlimited · 30 days
Nauru
Atlas Unlimited — Unlimited · 30 days, prepaid and ready on Developers · Nauru.
  1. 1Signal widget: network generation and destination, always visible.
  2. 2Five bars, zero ambiguity about what you're connected to.
Nauru · coverage
5 carriers · automatic selection
Coverage map on Developers · Nauru: 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?
74%
data left
Usage ring on Developers · Nauru — 74% of data left: the number travelers check most.
  1. 1Usage ring compresses the whole plan into one glanceable number.
  2. 2Percent remaining is the only metric most travelers check.
Tele Agent transcript
Do I need a local number in Nauru?
A local Nauru number is available on this plan — I can attach it before you land.
Tele Agent transcript on Developers · Nauru: 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.
195
destinations live
launch fact
Launch fact behind Developers · Nauru: 195 destinations live — 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.
Install
1 Scan2 Add3 Go
The Developers · Nauru install: QR in three steps — scan, add, go, about two minutes.
  1. 1Illustrative speed readout: sample carrier, city and latency figures.
  2. 2The meter demonstrates the readout — figures are examples, not live measurements.
Recent speeds
Barcelona139 Mbps
Lisbon917 Mbps
Seoul153 Mbps
Recent speeds for Developers · Nauru — Barcelona, Lisbon, Seoul: 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?
person using gray laptop
Get connected
1 Pick a plan2 Scan QR3 Land online
Three steps on Developers · Nauru: pick a plan, scan the QR, land online.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
male hiker standing on the rock overlooking the green mountains
Nauru is calling.
Get your eSIM
Live now · no waitlist
“Nauru is calling.” — the CTA card on Developers · Nauru: plans live now, no waitlist.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
Launch facts
195destinations live
31free tools
$8entry monthly plan
Launch facts behind Developers · Nauru — 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.
Jess Loiterton
Your Nauru number is waiting.
Get your eSIM
“Your Nauru number is waiting.” — the banner on Developers · Nauru: 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?
Nauru · 5G
Signal widget on Developers · Nauru: network generation and place, always visible.
  1. 1The plan chip: name, allowance and destination in one line.
  2. 2Everything you need to confirm you're on the right plan.
Network
5G
Nauru connected
Network widget for Developers · Nauru: 5G, full bars — zero ambiguity about the connection.
  1. 1The plan card shows exactly what you're buying — data, days, destination.
  2. 2One tap starts the two-minute QR install.
eSIM installedYour Nauru plan is ready.
Push · just now
Push notification on Developers · Nauru: eSIM installed, plan ready to activate.
  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
man with a backpack standing on a mountain slope
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.
eSIM plan
Atlas 5GB5 GB · 30 days
Nauru
Install eSIM
Atlas 5GB on Developers · Nauru — 5 GB · 30 days, prepaid with the full price shown before you pay.
  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.
mobile office in cafe
Nauru
eSIM dataLive
Local numberAvailable
5GYes
Coverage card on Developers · Nauru: data live, local number available, 5G where it exists.
  1. 1Coverage status at a glance: data live, number available, 5G ready.
  2. 2Green means go — no guessing about what's supported.
stone bridge over river in megalopolis — Developers · Nauru: The food tour: every recommendation looked up on the spot.
Developers · Nauru: The food tour: every recommendation looked up on the spot.
candid moment at mumbai airport viewing area — Developers · Nauru: The welcome home: eSIM deleted in one tap, no contract to cancel.
Developers · Nauru: The welcome home: eSIM deleted in one tap, no contract to cancel.
laptop standing on a table outside of a cafe with view of an alley — Developers · Nauru: The group chat stays live across every border you cross.
Developers · Nauru: The group chat stays live across every border you cross.
aerial photography of buildings during nighttime — Developers · Nauru: Coworking abroad: laptop tethered, calls crisp, deadlines met.
Developers · Nauru: Coworking abroad: laptop tethered, calls crisp, deadlines met.
white concrete buildings near the sea — Developers · Nauru: The viewpoint at golden hour: livestream the sunset to everyone back home.
Developers · Nauru: The viewpoint at golden hour: livestream the sunset to everyone back home.
teddy bear sitting atop luggage left in airport — Developers · Nauru: Night markets and late trains — connected the whole way through.
Developers · Nauru: Night markets and late trains — connected the whole way through.
low angle shot of the eiffel tower against blue sky — Developers · Nauru: Webhooks tell you when data runs low, plans expire, top-ups land.
Developers · Nauru: Webhooks tell you when data runs low, plans expire, top-ups land.
turned on macbook — Developers · Nauru: Platform to platform: tickets, timetables and taxis in one hand.
Developers · Nauru: Platform to platform: tickets, timetables and taxis in one hand.
people standing inside airport — Developers · Nauru: Trailheads and lookouts: offline maps downloaded, just in case.
Developers · Nauru: Trailheads and lookouts: offline maps downloaded, just in case.
Bernd Feurich — Developers · Nauru: City lights after dark — the eSIM doesn't care what time it is.
Developers · Nauru: City lights after dark — the eSIM doesn't care what time it is.
A couple enjoying a sunny day with smartphones and wine glasses on a rooftop in Portugal. — Developers · Nauru: The status page is public — uptime you can verify, not claim.
Developers · Nauru: The status page is public — uptime you can verify, not claim.
cityscape with multistory house exteriors under cloudy sky — Developers · Nauru: The departure board flips: gate found, lounge located, all on the eSIM.
Developers · Nauru: The departure board flips: gate found, lounge located, all on the eSIM.
captivating view from airplane window at sunset — Developers · Nauru: Build on the same rails the Nauru checkout uses.
Developers · Nauru: Build on the same rails the Nauru checkout uses.
dark alley — Developers · Nauru: Street-food stalls and mobile pay: dinner ordered without a word of the language.
Developers · Nauru: Street-food stalls and mobile pay: dinner ordered without a word of the language.
men in suits — Developers · Nauru: Island time, online time: ferries, beaches and full signal.
Developers · Nauru: Island time, online time: ferries, beaches and full signal.
vibrant tokyo street at night with neon lights — Developers · Nauru: Real journeys, real connectivity — this is what the product is for.
Developers · Nauru: Real journeys, real connectivity — this is what the product is for.
the view of a white building on a hillside — Developers · Nauru: The business trip: client deck synced, video call joined from the taxi.
Developers · Nauru: The business trip: client deck synced, video call joined from the taxi.
vibrant night scene of tokyo s neon lit streets — Developers · Nauru: SDKs, a CLI, and an MCP server — the developer surface, complete.
Developers · Nauru: SDKs, a CLI, and an MCP server — the developer surface, complete.
vibrant nightlife in shinjuku tokyo — Developers · Nauru: Migrate from Twilio in three steps — the toolkit does the heavy lifting.
Developers · Nauru: Migrate from Twilio in three steps — the toolkit does the heavy lifting.
women wearing bikinis sitting on sand on the beach — Developers · Nauru: The sunrise ferry: tickets in the wallet app, timetable cached offline.
Developers · Nauru: The sunrise ferry: tickets in the wallet app, timetable cached offline.

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. 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

  • 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.
  • Buy and install your eSIM before departure — airport Wi-Fi is the worst place to set up connectivity.
  • If a page won't load, toggle airplane mode for ten seconds — it forces a fresh network attach.
  • WhatsApp, iMessage and FaceTime keep your existing number on a data eSIM — no need to tell anyone a new number.
  • Charge your phone before long travel days; weak signal areas drain batteries faster.

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

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.

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

Charts & explainers

The numbers behind Nauru.

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.Always currentreflects live plans and coverageMobile friendlyworks on the phone in your handInstant resultsno waiting, no signupShares wellsend the answer to travel companionsPrivate by designyour inputs stay in your browserIllustrative profile based on tool design — not measured telemetry.
Capability profile. What Developers · Nauru does best — the capability profile, honestly ranked.
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.One-tap top-upMore data in seconds — no new QR code.Keep your WhatsAppYour existing number keeps working on the data line.6 languagesThe app speaks your language, wherever you're from.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. 5G, hotspot, WhatsApp continuity, top-up, support, six languages — all tiers.
Pro tipsFour habits of the always-connectedPro tipsSmall habits, big difference.1Set an 80% alertA top-up should never surprise you mid-trip.2Install before you flyAirport Wi-Fi is the worst place to set up connectivity.3Check unlock statusCarrier-locked phones can't add an eSIM — verify first.4Keep home SIM for 2FABank codes still arrive while data runs on the eSIM.
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.
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.1Scan the QR codeThe eSIM installs straight onto your phone. No store, no plastic SIM.2Land connectedSwitch the line on when you arrive — online before baggage claim.3Pick your planChoose data for your trip — checkout takes about two minutes.
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 last-minute flyer
Answer in minutes, eSIM installed before boarding.
esimgomobile network data2The remote worker
Size data for video calls and hotspotting with confidence.
esimgomobile network data3The family organizer
One tool, every traveler's needs covered.
esimgomobile network data4The planner
Compare before you commit — know the right plan weeks ahead.
esimgomobile network data
Use cases. Planners, sprinters, remote workers, families — who's it for.
Plan comparison matrixEvery plan for Nauru — data, validity, best fitPlans at a glanceFour prepaid plans cover every kind of trip to Nauru.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.1Apply itJump straight to the plan, setting or page it points to.2Open the toolNo account needed — it loads instantly in your browser.3Get the answerClear result with next steps — save it or act on it.4Enter your detailsTrip, data needs, destination. The tool does the math.
Tool walkthrough. Every tool on esimgomobile follows the same honest pattern: input, math, answer.
Network at a glanceCoverage facts for NauruNetwork at a glanceThe numbers that matter before you buy.195destinations liveesimgomobile network data5Gwhere available in Nauruesimgomobile 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. Nauru connects to the fastest available local partner network automatically.
Questions, answeredThe six things everyone asks firstQuestions, answeredShort answers, no sales pitch.Which phones work?
Any carrier-unlocked, eSIM-capable iPhone or Android.
Is it a contract?
No — prepaid. Service simply stops instead of charging extra.
What if data runs out?
80% alert, then one-tap top-up. No bill shock.
How fast is setup?
About two minutes: plan, QR scan, done.
Do I keep my number?
Yes — WhatsApp & iMessage keep working on your existing number.
Does hotspot work?
Yes — share your connection with laptop or tablet.
FAQ at a glance. Short answers, no sales pitch — the questions first, always.

Take Nauru 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