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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 Guinea-Bissau

Using developers in Guinea-Bissau? You are on the local edition — key facts for Guinea-Bissau (capital Bissau, dial code +245) are below. esimgomobile plans for Guinea-Bissau are live now — monthly plans from $8/mo and one-time travel packs from $3.65, with live checkout.

CapitalBissau
Dial code+245
CurrencyWest African CFA franc (XOF)
Time zoneUTC+0
Main languagesPortuguese

Plans are live — see plans and pricing.

The experience

esimgomobile in action.

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

Atlas Unlimited
Unlimited · 30 days
Guinea-Bissau
Atlas Unlimited — Unlimited · 30 days, prepaid and ready on Developers · Guinea-Bissau.
  1. 1Signal widget: network generation and destination, always visible.
  2. 2Five bars, zero ambiguity about what you're connected to.
Support
How does Developers · Guinea-Bissau work?
Enter your trip details and get an instant answer — no account needed.
Support snippet — Developers · Guinea-Bissau: 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.
Launch facts
195destinations live
31free tools
$8entry monthly plan
Launch facts behind Developers · Guinea-Bissau — 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.
Install
1 Scan2 Add3 Go
The Developers · Guinea-Bissau 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.
esimgomobile.com
Checkout
Atlas 5GB — Guinea-Bissautotal
Taxescalculated
Pay securely
256-bit encrypted · Amazon Pay
Secure checkout on Developers · Guinea-Bissau: Atlas 5GB, full price up front, no fine print.
  1. 1The dashboard keeps every eSIM, every trip, in one place.
  2. 2Rows show data left, days left and current city at a glance.
esimgomobile.com
Plans for Guinea-Bissau
Atlas 5GB5 GB · 30 days
Atlas 20GB20 GB · 30 days
Atlas 50GB50 GB · 60 days
Compare plans
Plan picker on Developers · Guinea-Bissau: 5GB, 20GB, 50GB and Unlimited — pick by trip, not fine print.
  1. 1The dashboard keeps every eSIM, every trip, in one place.
  2. 2Rows show data left, days left and current city at a glance.
Speed test
370Mbps
5G · Guinea-Bissau · 44 ms
Illustrative speed readout on Developers · Guinea-Bissau: 370 Mbps, 44 ms — example figures, not live measurements.
  1. 1The plan card shows exactly what you're buying — data, days, destination.
  2. 2One tap starts the two-minute QR install.
esimgomobile.com
Dashboard
Active eSIMs2
Data left20 GB
Current cityGuinea-Bissau
Web dashboard on Developers · Guinea-Bissau: every eSIM, every trip, 20 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.
My eSIM
66%20 GB left
Days left11
Top up+10 GB
Data dashboard on Developers · Guinea-Bissau: 66% 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.
79%
data left
Usage ring on Developers · Guinea-Bissau — 79% 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.
eSIM installedYour Guinea-Bissau plan is ready.
Push · just now
Push notification on Developers · Guinea-Bissau: 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.
Guinea-Bissau · coverage
5 carriers · automatic selection
Coverage map on Developers · Guinea-Bissau: 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?
Language
PortuguêsDeutschFrançais
Language picker on Developers · Guinea-Bissau — Português, Deutsch, Français: the app speaks six languages.
  1. 1Usage ring compresses the whole plan into one glanceable number.
  2. 2Percent remaining is the only metric most travelers check.
silhouette of two friends enjoying a beach sunset
Your Guinea-Bissau number is waiting.
Get your eSIM
“Your Guinea-Bissau number is waiting.” — the banner on Developers · Guinea-Bissau: two minutes from curious to connected.
  1. 1A real support transcript: the question, then the specific answer.
  2. 2This is what 'AI support' actually looks like in practice.
woman working with documents in office
Ready for Guinea-Bissau?
Get your eSIM
Live now · no waitlist
“Ready for Guinea-Bissau?” — the CTA card on Developers · Guinea-Bissau: plans live now, no waitlist.
  1. 1Coverage status at a glance: data live, number available, 5G ready.
  2. 2Green means go — no guessing about what's supported.
eSIM plan
Atlas 20GB20 GB · 30 days
Guinea-Bissau
Install eSIM
Atlas 20GB on Developers · Guinea-Bissau — 20 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.
Recent speeds
Bali622 Mbps
Rio de Janeiro226 Mbps
Lisbon233 Mbps
Recent speeds for Developers · Guinea-Bissau — Bali, Rio de Janeiro, Lisbon: 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.
Coverage
195
destinations live
Guinea-Bissau5G ready
Check coverage
Coverage at a glance for Developers · Guinea-Bissau: 195 destinations live, fastest local partner selected on its own.
  1. 1The Tele Agent answers in plain language — no telecom jargon.
  2. 2Every answer is specific to your trip, not a generic FAQ.
vs roaming
esimgomobile eSIMone price
Carrier roamingper-day fees
10 GB · 14 days · Guinea-Bissau
The honest comparison on Developers · Guinea-Bissau: one prepaid eSIM price versus carrier roaming.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
Tele Agent
“Setting up your Guinea-Bissau line…”
AI voice agent on Developers · Guinea-Bissau — answers spoken aloud, never a support ticket.
  1. 1Illustrative speed readout: sample carrier, city and latency figures.
  2. 2The meter demonstrates the readout — figures are examples, not live measurements.
Alexander Grey — Developers · Guinea-Bissau: The rental desk handshake: confirmation email open, license photo ready.
Developers · Guinea-Bissau: The rental desk handshake: confirmation email open, license photo ready.
business planning in office — Developers · Guinea-Bissau: The last night: photo album backed up, memories safe before wheels-up.
Developers · Guinea-Bissau: The last night: photo album backed up, memories safe before wheels-up.
aerial photography of concrete buildings near sea under grey clouds and blue sky — Developers · Guinea-Bissau: Webhooks tell you when data runs low, plans expire, top-ups land.
Developers · Guinea-Bissau: Webhooks tell you when data runs low, plans expire, top-ups land.
vibrant nightlife in tokyo s busy streets — Developers · Guinea-Bissau: Golden hour, fully online — photo backups upload before dinner.
Developers · Guinea-Bissau: Golden hour, fully online — photo backups upload before dinner.
woman using a laptop in a restaurant — Developers · Guinea-Bissau: Harbor views with full bars: coverage where travelers actually go.
Developers · Guinea-Bissau: Harbor views with full bars: coverage where travelers actually go.
aerial view of new york city s skyline — Developers · Guinea-Bissau: The docs ship with runnable examples, not pseudocode.
Developers · Guinea-Bissau: The docs ship with runnable examples, not pseudocode.
black and white new york city skyline — Developers · Guinea-Bissau: Rainy-day backup plan: indoor attractions researched from the hostel bunk.
Developers · Guinea-Bissau: Rainy-day backup plan: indoor attractions researched from the hostel bunk.
traffic on a street in paris — Developers · Guinea-Bissau: Platform to platform: tickets, timetables and taxis in one hand.
Developers · Guinea-Bissau: Platform to platform: tickets, timetables and taxis in one hand.
man and woman wearing a headset with a microphone in an office — Developers · Guinea-Bissau: The viewpoint at golden hour: livestream the sunset to everyone back home.
Developers · Guinea-Bissau: The viewpoint at golden hour: livestream the sunset to everyone back home.
miniature eiffel tower reflected on wet surface — Developers · Guinea-Bissau: Lost in the medina, found by GPS: the blue dot never lies.
Developers · Guinea-Bissau: Lost in the medina, found by GPS: the blue dot never lies.
man and woman wearing black headset smiling at each other — Developers · Guinea-Bissau: Duty-free browsing: price-checked against home before buying.
Developers · Guinea-Bissau: Duty-free browsing: price-checked against home before buying.
people standing inside airport — Developers · Guinea-Bissau: Trailheads and lookouts: offline maps downloaded, just in case.
Developers · Guinea-Bissau: Trailheads and lookouts: offline maps downloaded, just in case.
people working in a call center — Developers · Guinea-Bissau: Old town, new tricks: translation apps working in real time.
Developers · Guinea-Bissau: Old town, new tricks: translation apps working in real time.
Shreyaan Vashishtha — Developers · Guinea-Bissau: The welcome home: eSIM deleted in one tap, no contract to cancel.
Developers · Guinea-Bissau: The welcome home: eSIM deleted in one tap, no contract to cancel.
low angle shot of eiffel tower — Developers · Guinea-Bissau: The modern arrival: online before the seatbelt sign goes off.
Developers · Guinea-Bissau: The modern arrival: online before the seatbelt sign goes off.
a women having a picnic together — Developers · Guinea-Bissau: Build on the same rails the Guinea-Bissau checkout uses.
Developers · Guinea-Bissau: Build on the same rails the Guinea-Bissau checkout uses.
photo of the city against a cloudy sky — Developers · Guinea-Bissau: The connected trip: maps, messages and translation, all on one eSIM.
Developers · Guinea-Bissau: The connected trip: maps, messages and translation, all on one eSIM.
caleb charles — Developers · Guinea-Bissau: City lights after dark — the eSIM doesn't care what time it is.
Developers · Guinea-Bissau: City lights after dark — the eSIM doesn't care what time it is.
Maarten van den Heuvel — Developers · Guinea-Bissau: The museum queue skips itself: tickets bought online, straight to the door.
Developers · Guinea-Bissau: The museum queue skips itself: tickets bought online, straight to the door.
rising sun behind nyc downtown — Developers · Guinea-Bissau: Travelers stay online from the moment they land — no SIM queues, no roaming shock.
Developers · Guinea-Bissau: Travelers stay online from the moment they land — no SIM queues, no roaming shock.

Explainer

esimgomobile Developer…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. 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

  • Buy and install your eSIM before departure — airport Wi-Fi is the worst place to set up connectivity.
  • 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.
  • Keep your home SIM active for two-factor codes from your bank; run data on the eSIM line.
  • Hotspot sparingly: one laptop tethered all day can burn through a week of phone data.
  • 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.

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.

By the numbers

Guinea-Bissau, visualized.

esimgomobile Developer…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 Developer…rst, down to the SIM — data dashboard. Plan allowances, validity windows and a typical usage curve for esimgomobile Developer…rst, down to the SIM — hover for exact values.
Plan comparison matrixEvery plan for Guinea-Bissau — data, validity, best fitPlans at a glanceFour prepaid plans cover every kind of trip to Guinea-Bissau.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 · Guinea-Bissau: four plans, four trip shapes — the matrix carries no fine print.
Network at a glanceCoverage facts for Guinea-BissauNetwork at a glanceThe numbers that matter before you buy.195destinations liveesimgomobile network data5Gwhere available in Guinea-Bissauesimgomobile network data6app languagesesimgomobile network data2 mintypical install timeesimgomobile network dataPlus: local numbers where available, hotspot included, 24/7 support.Prepaid only — when the plan ends, it simply stops. No contracts.
Coverage facts. The network resume for Developers · Guinea-Bissau: 195 destinations, 5G where available, six languages.
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 planner
Compare before you commit — know the right plan weeks ahead.
esimgomobile network data3The last-minute flyer
Answer in minutes, eSIM installed before boarding.
esimgomobile network data4The remote worker
Size data for video calls and hotspotting with confidence.
esimgomobile network data
Use cases. Six traveler shapes, one tool — Developers · Guinea-Bissau's use cases.
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 · Guinea-Bissau usage guide.
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.2Pick your planChoose data for your trip — checkout takes about two minutes.3Land connectedSwitch the line on when you arrive — online before baggage claim.
Three-step setup. Install days before departure or minutes before boarding — your call.
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.Hotspot includedShare with your laptop or tablet at no extra cost.6 languagesThe app speaks your language, wherever you're from.24/7 supportReal humans plus the Tele Agent, around the clock.Keep your WhatsAppYour existing number keeps working on the data line.
Included with every plan. Six things ship with every plan — the Developers · Guinea-Bissau baseline, generous on purpose.
esimgomobile Developer…rst, down to the SIM: capability profileWhat the tool is good at — illustrative profileCapability profileFive strengths, ranked by what users feel first.Instant resultsno waiting, no signupShares wellsend the answer to travel companionsPrivate by designyour inputs stay in your browserAlways currentreflects live plans and coverageMobile friendlyworks on the phone in your handIllustrative 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.1Download offline mapsThey save data and work in dead zones.2Check unlock statusCarrier-locked phones can't add an eSIM — verify first.3Screenshot bookingsHotel address & confirmations, available with no signal.4Set an 80% alertA top-up should never surprise you mid-trip.
Pro tips. The small things that separate smooth trips from stressful ones.
How esimgomobile Developer…rst, down to the SIM worksFour steps from question to answerHow this tool worksBuilt to answer one question well.1Enter your detailsTrip, data needs, destination. The tool does the math.2Apply itJump straight to the plan, setting or page it points to.3Get the answerClear result with next steps — save it or act on it.4Open the toolNo account needed — it loads instantly in your browser.
Tool walkthrough. Every tool on esimgomobile follows the same honest pattern: input, math, answer.
Questions, answeredThe six things everyone asks firstQuestions, answeredShort answers, no sales pitch.Is it a contract?
No — prepaid. Service simply stops instead of charging extra.
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.
Which phones work?
Any carrier-unlocked, eSIM-capable iPhone or Android.
Does hotspot work?
Yes — share your connection with laptop or tablet.
FAQ at a glance. Still curious? The Tele Agent answers anything else instantly.

Your Guinea-Bissau plan is two minutes away

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

See plans and pricing Talk to the Tele Agent