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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 Tanzania

Using developers in Tanzania? You are on the local edition — key facts for Tanzania (capital Dodoma, dial code +255) are below. esimgomobile plans for Tanzania are live now — monthly plans from $8/mo and one-time travel packs from $3.65, with live checkout.

CapitalDodoma
Dial code+255
CurrencyTanzanian shilling (TZS)
Time zoneUTC+3
Main languagesSwahili, English

Plans are live — see plans and pricing.

The experience

Twenty screens, twenty photos.

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

vs roaming
esimgomobile eSIMone price
Carrier roamingper-day fees
10 GB · 14 days · Tanzania
The honest comparison on Developers · Tanzania: 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.
Network
5G
Tanzania connected
Network widget for Developers · Tanzania: 5G, full bars — zero ambiguity about the connection.
  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.
My eSIM
38%50 GB left
Days left21
Top up+10 GB
Data dashboard on Developers · Tanzania: 38% remaining, days left, top-up one tap away.
  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.
Tele Agent
Can I keep my WhatsApp number?
Yes — your eSIM is data-first, so WhatsApp keeps working on your existing number in Tanzania.
Tele Agent chat on Developers · Tanzania — 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.
esimgomobile.com
Dashboard
Active eSIMs3
Data left50 GB
Current cityTanzania
Web dashboard on Developers · Tanzania: every eSIM, every trip, 50 GB left — one screen.
  1. 1Checkout shows the full price before you pay. Nothing hidden.
  2. 2Amazon Pay handles payment securely; taxes are calculated for you.
Tanzania · 5G
Signal widget on Developers · Tanzania: 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.
Support
How does Developers · Tanzania work?
Enter your trip details and get an instant answer — no account needed.
Support snippet — Developers · Tanzania: 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.
esimgomobile.com
Checkout
Atlas Unlimited — Tanzaniatotal
Taxescalculated
Pay securely
256-bit encrypted · Amazon Pay
Secure checkout on Developers · Tanzania: Atlas Unlimited, full price up front, no fine print.
  1. 1Three plans side by side so the trade-off is obvious.
  2. 2Pick by trip length, not by decoding fine print.
esimgomobile.com
API quickstart
curl https://api.esimgomobile.com/v1/esims \
  -H "Authorization: Bearer $KEY" \
  -d '{"country":"TA"}'
200 OK · 94 ms
REST API behind Developers · Tanzania: issue eSIMs programmatically — 200 OK in milliseconds.
  1. 1Three plans side by side so the trade-off is obvious.
  2. 2Pick by trip length, not by decoding fine print.
Taryn Elliott
Get connected
1 Pick a plan2 Scan QR3 Land online
Three steps on Developers · Tanzania: pick a plan, scan the QR, land online.
  1. 1Coverage status at a glance: data live, number available, 5G ready.
  2. 2Green means go — no guessing about what's supported.
eSIM installedYour Tanzania plan is ready.
Push · just now
Push notification on Developers · Tanzania: 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.
Language
日本語EnglishEspañol
Language picker on Developers · Tanzania — 日本語, English, Español: 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.
Tele Agent
“Setting up your Tanzania line…”
AI voice agent on Developers · Tanzania — answers spoken aloud, never a support ticket.
  1. 1The Tele Agent answers in plain language — no telecom jargon.
  2. 2Every answer is specific to your trip, not a generic FAQ.
vibrant nightlife on ginza streets in tokyo
Your Tanzania number is waiting.
Get your eSIM
“Your Tanzania number is waiting.” — the banner on Developers · Tanzania: 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?
Launch facts
195destinations live
31free tools
$8entry monthly plan
Launch facts behind Developers · Tanzania — 195 destinations live, 31 free tools, $8 entry monthly plan: numbers we publish and stand behind.
  1. 1Mockups illustrate the product flow — captions describe what's real.
  2. 2Figures labeled as examples show sample data, never live telemetry.
eSIM plan
Atlas UnlimitedUnlimited · 30 days
Tanzania
Install eSIM
Atlas Unlimited on Developers · Tanzania — Unlimited · 30 days, prepaid with the full price shown before you pay.
  1. 1The Tele Agent answers in plain language — no telecom jargon.
  2. 2Every answer is specific to your trip, not a generic FAQ.
Tanzania · coverage
5 carriers · automatic selection
Coverage map on Developers · Tanzania: partner networks pinned, selection automatic.
  1. 1A real support transcript: the question, then the specific answer.
  2. 2This is what 'AI support' actually looks like in practice.
esimgomobile.com
Plans for Tanzania
Atlas 5GB5 GB · 30 days
Atlas 20GB20 GB · 30 days
Atlas 50GB50 GB · 60 days
Compare plans
Plan picker on Developers · Tanzania: 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 headset on a laptop
“My hotspot ran the whole Airbnb in Tanzania for two weeks.”
Omar H.Verified traveler · Tanzania
Traveler review for Developers · Tanzania: “My hotspot ran the whole Airbnb in Tanzania for two weeks.” — Omar H..
  1. 1Coverage status at a glance: data live, number available, 5G ready.
  2. 2Green means go — no guessing about what's supported.
31
free tools
launch fact
Launch fact behind Developers · Tanzania: 31 free tools — 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.
Stephen Leonardi — Developers · Tanzania: The sunrise ferry: tickets in the wallet app, timetable cached offline.
Developers · Tanzania: The sunrise ferry: tickets in the wallet app, timetable cached offline.
Asso Myron — Developers · Tanzania: The long layover: streaming, working and messaging, all covered.
Developers · Tanzania: The long layover: streaming, working and messaging, all covered.
man standing with mountains behind — Developers · Tanzania: The docs ship with runnable examples, not pseudocode.
Developers · Tanzania: The docs ship with runnable examples, not pseudocode.
graffiti laden rooftop overlooking new york skyline — Developers · Tanzania: The API issues eSIMs the way your app issues everything else — over HTTPS.
Developers · Tanzania: The API issues eSIMs the way your app issues everything else — over HTTPS.
new york cityscape behind sea at night — Developers · Tanzania: Sandbox first: test provisioning without spending a cent.
Developers · Tanzania: Sandbox first: test provisioning without spending a cent.
close up shot of a person holding a tea cup — Developers · Tanzania: Golden hour, fully online — photo backups upload before dinner.
Developers · Tanzania: Golden hour, fully online — photo backups upload before dinner.
laughing man and woman working in a call center — Developers · Tanzania: The group chat stays live across every border you cross.
Developers · Tanzania: The group chat stays live across every border you cross.
a man standing on a rock looking at the mountains — Developers · Tanzania: Border crossings without the paperwork shuffle: ID photos stored on the phone.
Developers · Tanzania: Border crossings without the paperwork shuffle: ID photos stored on the phone.
airplane wing seen through window — Developers · Tanzania: Downtown, connected: the eSIM finds the fastest local network on its own.
Developers · Tanzania: Downtown, connected: the eSIM finds the fastest local network on its own.
a man standing on a mountain — Developers · Tanzania: Souvenir hunting with live currency conversion in your pocket.
Developers · Tanzania: Souvenir hunting with live currency conversion in your pocket.
天玑 不器 — Developers · Tanzania: Café office: hotspot running, video call stable, no hotel Wi-Fi roulette.
Developers · Tanzania: Café office: hotspot running, video call stable, no hotel Wi-Fi roulette.
Palm Trees Near Beach — Developers · Tanzania: Market mornings: look up the dish, translate the menu, pay by phone.
Developers · Tanzania: Market mornings: look up the dish, translate the menu, pay by phone.
aerial view of airplane wing through window — Developers · Tanzania: The viewpoint at golden hour: livestream the sunset to everyone back home.
Developers · Tanzania: The viewpoint at golden hour: livestream the sunset to everyone back home.
A woman sitting comfortably on a ferry, enjoying a peaceful journey. — Developers · Tanzania: The commute, handled: podcasts downloaded, messages sent, no dead zones.
Developers · Tanzania: The commute, handled: podcasts downloaded, messages sent, no dead zones.
A person capturing the stunning view of snowy mountains with a smartphone. — Developers · Tanzania: Coast roads and country lanes — the map keeps up wherever you roam.
Developers · Tanzania: Coast roads and country lanes — the map keeps up wherever you roam.
Daniel Narinian — Developers · Tanzania: Trailheads and lookouts: offline maps downloaded, just in case.
Developers · Tanzania: Trailheads and lookouts: offline maps downloaded, just in case.
three people walking on the beach with the ocean in the background — Developers · Tanzania: The museum queue skips itself: tickets bought online, straight to the door.
Developers · Tanzania: The museum queue skips itself: tickets bought online, straight to the door.
a turkish airplane flying above the white clouds — Developers · Tanzania: The conference badge: QR ticket scanned, session schedule synced.
Developers · Tanzania: The conference badge: QR ticket scanned, session schedule synced.
people sitting at an airport — Developers · Tanzania: Hiking the ridge: trail map offline, emergency numbers saved.
Developers · Tanzania: Hiking the ridge: trail map offline, emergency numbers saved.
photo of santorini greece — Developers · Tanzania: Coworking abroad: laptop tethered, calls crisp, deadlines met.
Developers · Tanzania: Coworking abroad: laptop tethered, calls crisp, deadlines met.

Explainer

esimgomobile Developers: the full picture

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.

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 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

  • Keep your home SIM active for two-factor codes from your bank; run data on the eSIM line.
  • Set a data alert at 80% so a top-up never surprises you mid-trip.
  • Screenshot your hotel address and booking confirmations — you'll want them with no signal.
  • 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.
  • Turn off auto-play on social apps before you fly; it quietly eats roaming data.

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.

By the numbers

Every chart that matters for Tanzania.

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.
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 · Tanzania usage guide.
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.2Enter your detailsTrip, data needs, destination. The tool does the math.3Open the toolNo account needed — it loads instantly in your browser.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.
Who it's forFour travelers, one toolWho it's forBuilt for real trip shapes, not personas.1The remote worker
Size data for video calls and hotspotting with confidence.
esimgomobile network data2The last-minute flyer
Answer in minutes, eSIM installed before boarding.
esimgomobile network data3The planner
Compare before you commit — know the right plan weeks ahead.
esimgomobile network data4The family organizer
One tool, every traveler's needs covered.
esimgomobile network data
Use cases. Planners, sprinters, remote workers, families — who's it for.
esimgomobile Developers: capability profileWhat the tool is good at — illustrative profileCapability profileFive strengths, ranked by what users feel first.Private by designyour inputs stay in your browserMobile friendlyworks on the phone in your handShares wellsend the answer to travel companionsInstant resultsno waiting, no signupAlways currentreflects live plans and coverageIllustrative profile based on tool design — not measured telemetry.
Capability profile. Ranked by what travelers notice first, not by marketing priority.
Network at a glanceCoverage facts for TanzaniaNetwork at a glanceThe numbers that matter before you buy.195destinations liveesimgomobile network data5Gwhere available in Tanzaniaesimgomobile 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. Tanzania connects to the fastest available local partner network automatically.
Pro tipsFour habits of the always-connectedPro tipsSmall habits, big difference.1Keep home SIM for 2FABank codes still arrive while data runs on the eSIM.2Screenshot bookingsHotel address & confirmations, available with no signal.3Check unlock statusCarrier-locked phones can't add an eSIM — verify first.4Install before you flyAirport Wi-Fi is the worst place to set up connectivity.
Pro tips. Veterans do all four without thinking.
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.2Scan the QR codeThe eSIM installs straight onto your phone. No store, no plastic SIM.3Land connectedSwitch the line on when you arrive — online before baggage claim.
Three-step setup. Three steps, about two minutes — the Developers · Tanzania ritual, no store visit.
Plan comparison matrixEvery plan for Tanzania — data, validity, best fitPlans at a glanceFour prepaid plans cover every kind of trip to Tanzania.PLANDATAVALIDITYAtlas 5GBWeekend breaks & light use5 GB30 daysAtlas 20GBTwo-week trips & daily use20 GB30 daysAtlas 50GBRemote work & hotspotting50 GB60 daysAtlas UnlimitedHeavy use, zero meteringUnlimited30 days
Plan comparison matrix. All four Atlas plans work in Tanzania; pick by trip length and appetite for data.
Questions, answeredThe six things everyone asks firstQuestions, answeredShort answers, no sales pitch.What if data runs out?
80% alert, then one-tap top-up. No bill shock.
Do I keep my number?
Yes — WhatsApp & iMessage keep working on your existing number.
Which phones work?
Any carrier-unlocked, eSIM-capable iPhone or Android.
How fast is setup?
About two minutes: plan, QR scan, done.
Does hotspot work?
Yes — share your connection with laptop or tablet.
Is it a contract?
No — prepaid. Service simply stops instead of charging extra.
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.24/7 supportReal humans plus the Tele Agent, around the clock.Hotspot includedShare with your laptop or tablet at no extra cost.Keep your WhatsAppYour existing number keeps working on the data line.One-tap top-upMore data in seconds — no new QR code.5G where availableFastest local partner network, selected automatically.
Included with every plan. Six things ship with every plan — the Developers · Tanzania baseline, generous on purpose.

Start your Tanzania 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