>
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 Nicaragua

Using developers in Nicaragua? You are on the local edition — key facts for Nicaragua (capital Managua, dial code +505) are below. esimgomobile plans for Nicaragua are live now — monthly plans from $8/mo and one-time travel packs from $3.65, with live checkout.

CapitalManagua
Dial code+505
CurrencyNicaraguan córdoba (NIO)
Time zoneUTC-6
Main languagesSpanish

Plans are live — see plans and pricing.

The experience

Take the tour.

Twenty product screens and twenty field photos — this is what traveling connected looks like.

Nicaragua · 5G
Signal widget on Developers · Nicaragua: 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.
29%
data left
Usage ring on Developers · Nicaragua — 29% 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.
esimgomobile.com
API quickstart
curl https://api.esimgomobile.com/v1/esims \
  -H "Authorization: Bearer $KEY" \
  -d '{"country":"NI"}'
200 OK · 100 ms
REST API behind Developers · Nicaragua: issue eSIMs programmatically — 200 OK in milliseconds.
  1. 1The dashboard keeps every eSIM, every trip, in one place.
  2. 2Rows show data left, days left and current city at a glance.
Recent speeds
Barcelona331 Mbps
Bangkok225 Mbps
Seoul584 Mbps
Recent speeds for Developers · Nicaragua — Barcelona, Bangkok, Seoul: 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.
Speed test
658Mbps
5G · Nicaragua · 76 ms
Illustrative speed readout on Developers · Nicaragua: 658 Mbps, 76 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.
Atlas 5GB
5 GB · 30 days
Nicaragua
Atlas 5GB — 5 GB · 30 days, prepaid and ready on Developers · Nicaragua.
  1. 1Signal widget: network generation and destination, always visible.
  2. 2Five bars, zero ambiguity about what you're connected to.
Launch facts
195destinations live
31free tools
$8entry monthly plan
Launch facts behind Developers · Nicaragua — 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.
Network
5G
Nicaragua connected
Network widget for Developers · Nicaragua: 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.
Willian Justen de Vasconcellos
Your Nicaragua number is waiting.
Get your eSIM
“Your Nicaragua number is waiting.” — the banner on Developers · Nicaragua: 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?
Why travelers pick it
  • Instant QR install
  • 5G where available
  • 24/7 support
Why travelers pick Developers · Nicaragua: Instant QR install, 5G where available, 24/7 support.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
view of airplanes parked at manila airport
Nicaragua
eSIM dataLive
Local numberAvailable
5GYes
Coverage card on Developers · Nicaragua: data live, local number available, 5G where it exists.
  1. 1The roaming math, made visible: one price versus per-day carrier fees.
  2. 2This is the comparison most travelers never see until the bill.
Language
日本語FrançaisDeutsch
Language picker on Developers · Nicaragua — 日本語, Français, Deutsch: the app speaks six languages.
  1. 1Signal widget: network generation and destination, always visible.
  2. 2Five bars, zero ambiguity about what you're connected to.
Nicaragua · coverage
5 carriers · automatic selection
Coverage map on Developers · Nicaragua: 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.
Install
1 Scan2 Add3 Go
The Developers · Nicaragua 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.
Tele Agent transcript
How fast is the data in Nicaragua?
Nicaragua averages 5G in cities. Your plan connects to the fastest local network automatically.
Tele Agent transcript on Developers · Nicaragua: real question, specific answer.
  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 cityNicaragua
Web dashboard on Developers · Nicaragua: every eSIM, every trip, 50 GB left — one screen.
  1. 1Three plans side by side so the trade-off is obvious.
  2. 2Pick by trip length, not by decoding fine print.
vs roaming
esimgomobile eSIMone price
Carrier roamingper-day fees
10 GB · 14 days · Nicaragua
The honest comparison on Developers · Nicaragua: one prepaid eSIM price versus carrier roaming.
  1. 1Coverage status at a glance: data live, number available, 5G ready.
  2. 2Green means go — no guessing about what's supported.
Virtual number
+1 205 401 9523
Routes toNicaragua
SMS + voiceEnabled
Your second line on Developers · Nicaragua: +1 205 401 9523 — 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.
My eSIM
41%20 GB left
Days left13
Top up+10 GB
Data dashboard on Developers · Nicaragua: 41% remaining, days left, top-up one tap away.
  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 · Nicaragua work?
Enter your trip details and get an instant answer — no account needed.
Support snippet — Developers · Nicaragua: what it does, in one honest answer.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
photo of the city against a cloudy sky — Developers · Nicaragua: Rooftop check-in: boarding passes and hotel keys, all on the phone.
Developers · Nicaragua: Rooftop check-in: boarding passes and hotel keys, all on the phone.
Ignacio Estevo — Developers · Nicaragua: The viewpoint at golden hour: livestream the sunset to everyone back home.
Developers · Nicaragua: The viewpoint at golden hour: livestream the sunset to everyone back home.
man in gray plaid jacket holding headset — Developers · Nicaragua: Border crossings without the paperwork shuffle: ID photos stored on the phone.
Developers · Nicaragua: Border crossings without the paperwork shuffle: ID photos stored on the phone.
Lucy Du Preez — Developers · Nicaragua: The modern arrival: online before the seatbelt sign goes off.
Developers · Nicaragua: The modern arrival: online before the seatbelt sign goes off.
midsection of man using mobile phone while sitting on table — Developers · Nicaragua: Night markets and late trains — connected the whole way through.
Developers · Nicaragua: Night markets and late trains — connected the whole way through.
cozy coffee shop work session — Developers · Nicaragua: The museum queue skips itself: tickets bought online, straight to the door.
Developers · Nicaragua: The museum queue skips itself: tickets bought online, straight to the door.
green cactus plant near white concrete wall — Developers · Nicaragua: Museum afternoons with audio guides streaming, not buffering.
Developers · Nicaragua: Museum afternoons with audio guides streaming, not buffering.
quiet night street scene in tokyo japan — Developers · Nicaragua: The night bus: entertainment downloaded, messages queued, rest easy.
Developers · Nicaragua: The night bus: entertainment downloaded, messages queued, rest easy.
building in city in japan — Developers · Nicaragua: Migrate from Twilio in three steps — the toolkit does the heavy lifting.
Developers · Nicaragua: Migrate from Twilio in three steps — the toolkit does the heavy lifting.
person standing on the mountain — Developers · Nicaragua: Downtown, connected: the eSIM finds the fastest local network on its own.
Developers · Nicaragua: Downtown, connected: the eSIM finds the fastest local network on its own.
a woman with earpods having a meeting with a woman in a video call — Developers · Nicaragua: Platform to platform: tickets, timetables and taxis in one hand.
Developers · Nicaragua: Platform to platform: tickets, timetables and taxis in one hand.
close up shot of smartphone screen — Developers · Nicaragua: Hiking the ridge: trail map offline, emergency numbers saved.
Developers · Nicaragua: Hiking the ridge: trail map offline, emergency numbers saved.
Enrique — Developers · Nicaragua: The rental desk handshake: confirmation email open, license photo ready.
Developers · Nicaragua: The rental desk handshake: confirmation email open, license photo ready.
a man and woman having conversation while wearing headsets — Developers · Nicaragua: SDKs, a CLI, and an MCP server — the developer surface, complete.
Developers · Nicaragua: SDKs, a CLI, and an MCP server — the developer surface, complete.
open laptop displaying video conference call — Developers · Nicaragua: Coast roads and country lanes — the map keeps up wherever you roam.
Developers · Nicaragua: Coast roads and country lanes — the map keeps up wherever you roam.
people on a video call — Developers · Nicaragua: One curl call provisions a Nicaragua eSIM — 200 OK in milliseconds.
Developers · Nicaragua: One curl call provisions a Nicaragua eSIM — 200 OK in milliseconds.
Monica Oprea — Developers · Nicaragua: Island time, online time: ferries, beaches and full signal.
Developers · Nicaragua: Island time, online time: ferries, beaches and full signal.
eiffel tower architectural marvel in paris — Developers · Nicaragua: Real journeys, real connectivity — this is what the product is for.
Developers · Nicaragua: Real journeys, real connectivity — this is what the product is for.
an airplane wing seen from the airplane window — Developers · Nicaragua: City lights after dark — the eSIM doesn't care what time it is.
Developers · Nicaragua: City lights after dark — the eSIM doesn't care what time it is.
temples on high terrace against picturesque coast — Developers · Nicaragua: The long layover: streaming, working and messaging, all covered.
Developers · Nicaragua: The long layover: streaming, working and messaging, all covered.

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.

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.

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

  • Keep your home SIM active for two-factor codes from your bank; run data on the eSIM line.
  • Screenshot your hotel address and booking confirmations — you'll want them with no signal.
  • Download offline maps for your destination — they save data and work in dead zones.
  • Turn off auto-play on social apps before you fly; it quietly eats roaming data.
  • If a page won't load, toggle airplane mode for ten seconds — it forces a fresh network attach.
  • 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

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

And because everything is prepaid through Amazon Pay, the commercial relationship is simple: you pay for data, you get data, it ends when it ends.

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

Nicaragua, visualized.

esimgomobile Developers — data dashboard

The product's headline numbers, switchable by dataset.

195
destinations live
global footprint
4
Atlas plans
prepaid, no contracts
~2 min
typical install
QR scan to online
6
app languages
EN ES FR DE PT JA
Atlas 5GB: 5 GB over 30 days — Weekend breaks & light useAtlas 5GB 5 GBAtlas 20GB: 20 GB over 30 days — Two-week trips & daily useAtlas 20GB 20 GBAtlas 50GB: 50 GB over 60 days — Remote work & hotspottingAtlas 50GB 50 GBAtlas Unlimited: Unlimited over 30 days — Heavy use, zero meteringAtlas Unlimited Unlimited
Atlas 5GB: 30-day validityAtlas 5GB 30 daysAtlas 20GB: 30-day validityAtlas 20GB 30 daysAtlas 50GB: 60-day validityAtlas 50GB 60 daysAtlas Unlimited: 30-day validityAtlas Unlimited 30 days
Illustrative — D1: 100% of maxIllustrative — D10: 70% of maxIllustrative — D20: 42% of maxIllustrative — D30: 12% of maxDay 1Day 10Day 20Day 30IllustrativeIllustrative 20 GB burn-down at moderate use.

Hover any bar or point for its exact value. Tabs switch datasets — everything on this panel is computed from live product data unless labeled illustrative.

esimgomobile Developers — data dashboard. Plan allowances, validity windows and a typical usage curve for esimgomobile Developers — hover for exact values.
Pro tipsFour habits of the always-connectedPro tipsSmall habits, big difference.1Download offline mapsThey save data and work in dead zones.2Set an 80% alertA top-up should never surprise you mid-trip.3Screenshot bookingsHotel address & confirmations, available with no signal.4Keep home SIM for 2FABank codes still arrive while data runs on the eSIM.
Pro tips. Four habits for smooth trips — pro tips for Developers · Nicaragua.
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 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 NicaraguaNetwork at a glanceThe numbers that matter before you buy.195destinations liveesimgomobile network data5Gwhere available in Nicaraguaesimgomobile 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. Nicaragua connects to the fastest available local partner network automatically.
Plan comparison matrixEvery plan for Nicaragua — data, validity, best fitPlans at a glanceFour prepaid plans cover every kind of trip to Nicaragua.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 · Nicaragua: 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.Hotspot includedShare with your laptop or tablet at no extra cost.Keep your WhatsAppYour existing number keeps working on the data line.24/7 supportReal humans plus the Tele Agent, around the clock.5G where availableFastest local partner network, selected automatically.6 languagesThe app speaks your language, wherever you're from.One-tap top-upMore data in seconds — no new QR code.
Included with every plan. Six things ship with every plan — the Developers · Nicaragua baseline, generous on purpose.
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. Install days before departure or minutes before boarding — your call.
esimgomobile Developers: capability profileWhat the tool is good at — illustrative profileCapability profileFive strengths, ranked by what users feel first.Shares wellsend the answer to travel companionsPrivate by designyour inputs stay in your browserAlways currentreflects live plans and coverageMobile friendlyworks on the phone in your handInstant resultsno waiting, no signupIllustrative profile based on tool design — not measured telemetry.
Capability profile. Capabilities measured by traveler value, not feature count.
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 · Nicaragua usage guide.
Questions, answeredThe six things everyone asks firstQuestions, answeredShort answers, no sales pitch.How fast is setup?
About two minutes: plan, QR scan, done.
What if data runs out?
80% alert, then one-tap top-up. No bill shock.
Which phones work?
Any carrier-unlocked, eSIM-capable iPhone or Android.
Do I keep my number?
Yes — WhatsApp & iMessage keep working on your existing number.
Is it a contract?
No — prepaid. Service simply stops instead of charging extra.
Does hotspot work?
Yes — share your connection with laptop or tablet.
FAQ at a glance. Six questions every traveler asks — the Developers · Nicaragua answers, one screen.
How esimgomobile Developers 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.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. Developers · Nicaragua, demystified: open, enter, answer, act.

Your Nicaragua 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