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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 South Sudan

Using developers in South Sudan? You are on the local edition — key facts for South Sudan (capital Juba, dial code +211) are below. esimgomobile plans for South Sudan are live now — monthly plans from $8/mo and one-time travel packs from $3.65, with live checkout.

CapitalJuba
Dial code+211
CurrencySouth Sudanese pound (SSP)
Time zoneUTC+2
Main languagesEnglish

Plans are live — see plans and pricing.

Up close

Twenty screens, twenty photos.

Every screen below is the real flow: plans, coverage, speed and support, rendered for this page.

Install
1 Scan2 Add3 Go
The Developers · South Sudan 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.
esimgomobile.com
Plans for South Sudan
Atlas 5GB5 GB · 30 days
Atlas 20GB20 GB · 30 days
Atlas 50GB50 GB · 60 days
Compare plans
Plan picker on Developers · South Sudan: 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.
a group of people with a laptop
Ready for South Sudan?
Get your eSIM
Live now · no waitlist
“Ready for South Sudan?” — the CTA card on Developers · South Sudan: 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.
195
destinations live
launch fact
Launch fact behind Developers · South Sudan: 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.
Atlas 5GB
5 GB · 30 days
South Sudan
Atlas 5GB — 5 GB · 30 days, prepaid and ready on Developers · South Sudan.
  1. 1Usage ring compresses the whole plan into one glanceable number.
  2. 2Percent remaining is the only metric most travelers check.
unrecognizable ethnic man having video conference with upset girlfriend
South Sudan is calling.
Get your eSIM
“South Sudan is calling.” — the banner on Developers · South Sudan: 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?
esimgomobile.com
Dashboard
Active eSIMs1
Data left50 GB
Current citySouth Sudan
Web dashboard on Developers · South Sudan: every eSIM, every trip, 50 GB left — one screen.
  1. 1The dashboard keeps every eSIM, every trip, in one place.
  2. 2Rows show data left, days left and current city at a glance.
My eSIM
48%5 GB left
Days left22
Top up+10 GB
Data dashboard on Developers · South Sudan: 48% 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.
esimgomobile.com
Checkout
Atlas 50GB — South Sudantotal
Taxescalculated
Pay securely
256-bit encrypted · Amazon Pay
Secure checkout on Developers · South Sudan: Atlas 50GB, full price up front, no fine print.
  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 South Sudan line…”
AI voice agent on Developers · South Sudan — 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.
Support
How does Developers · South Sudan work?
Enter your trip details and get an instant answer — no account needed.
Support snippet — Developers · South Sudan: 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.
Virtual number
+1 205 851 6049
Routes toSouth Sudan
SMS + voiceEnabled
Your second line on Developers · South Sudan: +1 205 851 6049 — 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.
Coverage
195
destinations live
South Sudan5G ready
Check coverage
Coverage at a glance for Developers · South Sudan: 195 destinations live, fastest local partner selected on its own.
  1. 1The plan card shows exactly what you're buying — data, days, destination.
  2. 2One tap starts the two-minute QR install.
58%
data left
Usage ring on Developers · South Sudan — 58% 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.
South Sudan · 5G
Signal widget on Developers · South Sudan: network generation and place, always visible.
  1. 1Usage ring compresses the whole plan into one glanceable number.
  2. 2Percent remaining is the only metric most travelers check.
eSIM installedYour South Sudan plan is ready.
Push · just now
Push notification on Developers · South Sudan: eSIM installed, plan ready to activate.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
people under cloudy sky
“The South Sudan number saved me at the rental counter — they called, I answered.”
Tara B.Verified traveler · South Sudan
Traveler review for Developers · South Sudan: “The South Sudan number saved me at the rental counter — they called, I answered.” — Tara B..
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
neon lights by the street at night
Get connected
1 Pick a plan2 Scan QR3 Land online
Three steps on Developers · South Sudan: 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.
vs roaming
esimgomobile eSIMone price
Carrier roamingper-day fees
10 GB · 14 days · South Sudan
The honest comparison on Developers · South Sudan: one prepaid eSIM price versus carrier roaming.
  1. 1The roaming math, made visible: one price versus per-day carrier fees.
  2. 2This is the comparison most travelers never see until the bill.
Language
DeutschFrançais日本語
Language picker on Developers · South Sudan — Deutsch, Français, 日本語: the app speaks six languages.
  1. 1The plan chip: name, allowance and destination in one line.
  2. 2Everything you need to confirm you're on the right plan.
empire state building nyc — Developers · South Sudan: Museum afternoons with audio guides streaming, not buffering.
Developers · South Sudan: Museum afternoons with audio guides streaming, not buffering.
photo of a person holding a smartphone — Developers · South Sudan: Street-food stalls and mobile pay: dinner ordered without a word of the language.
Developers · South Sudan: Street-food stalls and mobile pay: dinner ordered without a word of the language.
eifel tower from the port liena — Developers · South Sudan: One curl call provisions a South Sudan eSIM — 200 OK in milliseconds.
Developers · South Sudan: One curl call provisions a South Sudan eSIM — 200 OK in milliseconds.
clouds around eiffel tower — Developers · South Sudan: Old town, new tricks: translation apps working in real time.
Developers · South Sudan: Old town, new tricks: translation apps working in real time.
aerial viewof sand — Developers · South Sudan: Build on the same rails the South Sudan checkout uses.
Developers · South Sudan: Build on the same rails the South Sudan checkout uses.
Sharad Bhat — Developers · South Sudan: The night bus: entertainment downloaded, messages queued, rest easy.
Developers · South Sudan: The night bus: entertainment downloaded, messages queued, rest easy.
space gray iphone 8 — Developers · South Sudan: Sunrise hikes start with a weather check — data on, boots on.
Developers · South Sudan: Sunrise hikes start with a weather check — data on, boots on.
a woman using a laptop while sitting on a chair — Developers · South Sudan: From departure lounge to arrival hall, the data never drops.
Developers · South Sudan: From departure lounge to arrival hall, the data never drops.
women and man sitting by table with laptop — Developers · South Sudan: SDKs, a CLI, and an MCP server — the developer surface, complete.
Developers · South Sudan: SDKs, a CLI, and an MCP server — the developer surface, complete.
A couple enjoying a sunny day with smartphones and wine glasses on a rooftop in Portugal. — Developers · South Sudan: Coworking abroad: laptop tethered, calls crisp, deadlines met.
Developers · South Sudan: Coworking abroad: laptop tethered, calls crisp, deadlines met.
using a laptop and drinking coffee — Developers · South Sudan: Night markets and late trains — connected the whole way through.
Developers · South Sudan: Night markets and late trains — connected the whole way through.
man and woman video call on laptop — Developers · South Sudan: Market mornings: look up the dish, translate the menu, pay by phone.
Developers · South Sudan: Market mornings: look up the dish, translate the menu, pay by phone.
Senior tourists photographing scenic landscape in Cappadocia, Türkiye under a sun umbrella on a sunny day. — Developers · South Sudan: Rainy-day backup plan: indoor attractions researched from the hostel bunk.
Developers · South Sudan: Rainy-day backup plan: indoor attractions researched from the hostel bunk.
Hipster with a beard and sunglasses in a city square holding a smartphone. — Developers · South Sudan: The last night: photo album backed up, memories safe before wheels-up.
Developers · South Sudan: The last night: photo album backed up, memories safe before wheels-up.
airplane wing and thick clouds — Developers · South Sudan: The food tour: every recommendation looked up on the spot.
Developers · South Sudan: The food tour: every recommendation looked up on the spot.
back view of couple embracing at airport — Developers · South Sudan: Coast roads and country lanes — the map keeps up wherever you roam.
Developers · South Sudan: Coast roads and country lanes — the map keeps up wherever you roam.
interior of an airport terminal — Developers · South Sudan: Lost in the medina, found by GPS: the blue dot never lies.
Developers · South Sudan: Lost in the medina, found by GPS: the blue dot never lies.
serene beachfront scene in chonburi thailand — Developers · South Sudan: Hiking the ridge: trail map offline, emergency numbers saved.
Developers · South Sudan: Hiking the ridge: trail map offline, emergency numbers saved.
person holding smartphone with stylish case — Developers · South Sudan: Border crossings without the paperwork shuffle: ID photos stored on the phone.
Developers · South Sudan: Border crossings without the paperwork shuffle: ID photos stored on the phone.
Shreyaan Vashishtha — Developers · South Sudan: Currency exchange, skipped: the phone pays at the real rate.
Developers · South Sudan: Currency exchange, skipped: the phone pays at the real rate.

Explainer

esimgomobile Developers…rst, down to the SIM: 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

  • If a page won't load, toggle airplane mode for ten seconds — it forces a fresh network attach.
  • Screenshot your hotel address and booking confirmations — you'll want them with no signal.
  • Charge your phone before long travel days; weak signal areas drain batteries faster.
  • Set a data alert at 80% so a top-up never surprises you mid-trip.
  • WhatsApp, iMessage and FaceTime keep your existing number on a data eSIM — no need to tell anyone a new number.
  • 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

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.

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

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

See the math

South Sudan, visualized.

esimgomobile Developers…rst, down to the SIM — 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…rst, down to the SIM — data dashboard. Plan allowances, validity windows and a typical usage curve for esimgomobile Developers…rst, down to the SIM — 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.
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.
Is it a contract?
No — prepaid. Service simply stops instead of charging extra.
Which phones work?
Any carrier-unlocked, eSIM-capable iPhone or Android.
FAQ at a glance. Still curious? The Tele Agent answers anything else instantly.
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. If you recognize yourself here, the tool will pay for its click.
Network at a glanceCoverage facts for South SudanNetwork at a glanceThe numbers that matter before you buy.195destinations liveesimgomobile network data5Gwhere available in South Sudanesimgomobile 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. South Sudan connects to the fastest available local partner network automatically.
Plan comparison matrixEvery plan for South Sudan — data, validity, best fitPlans at a glanceFour prepaid plans cover every kind of trip to South Sudan.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 · South Sudan: four plans, four trip shapes — the matrix carries no fine print.
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.Keep your WhatsAppYour existing number keeps working on the data line.5G where availableFastest local partner network, selected automatically.Hotspot includedShare with your laptop or tablet at no extra cost.One-tap top-upMore data in seconds — no new QR code.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.
How esimgomobile Developers…rst, down to the SIM 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. Every tool on esimgomobile follows the same honest pattern: input, math, 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. Three steps, about two minutes — the Developers · South Sudan ritual, no store visit.
esimgomobile Developers…rst, down to the SIM: 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 browserInstant resultsno waiting, no signupShares wellsend the answer to travel companionsIllustrative profile based on tool design — not measured telemetry.
Capability profile. Capabilities measured by traveler value, not feature count.
Pro tipsFour habits of the always-connectedPro tipsSmall habits, big difference.1Screenshot bookingsHotel address & confirmations, available with no signal.2Check unlock statusCarrier-locked phones can't add an eSIM — verify first.3Install before you flyAirport Wi-Fi is the worst place to set up connectivity.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. Gigabytes translated into hours — the Developers · South Sudan usage guide.

Take South Sudan with you, connected

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

See plans and pricing Talk to the Tele Agent