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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 Mexico

Using developers in Mexico? You are on the local edition — key facts for Mexico (capital Mexico City, dial code +52) are below. esimgomobile plans for Mexico are live now — monthly plans from $8/mo and one-time travel packs from $3.65, with live checkout.

CapitalMexico City
Dial code+52
CurrencyMexican peso (MXN)
Time zoneUTC-6
Main languagesSpanish

Plans are live — see plans and pricing.

Inside the app

Take the tour.

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

vs roaming
esimgomobile eSIMone price
Carrier roamingper-day fees
10 GB · 14 days · Mexico
The honest comparison on Developers · Mexico: 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.
eSIM plan
Atlas 50GB50 GB · 60 days
Mexico
Install eSIM
Atlas 50GB on Developers · Mexico — 50 GB · 60 days, prepaid with the full price shown before you pay.
  1. 1Illustrative speed readout: sample carrier, city and latency figures.
  2. 2The meter demonstrates the readout — figures are examples, not live measurements.
Network
5G
Mexico connected
Network widget for Developers · Mexico: 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.
Coverage
195
destinations live
Mexico5G ready
Check coverage
Coverage at a glance for Developers · Mexico: 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.
a close up shot of a headset
Mexico is calling.
Get your eSIM
Live now · no waitlist
“Mexico is calling.” — the CTA card on Developers · Mexico: 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.
Tele Agent transcript
Can I keep my WhatsApp number?
Yes — your eSIM is data-first, so WhatsApp keeps working on your existing number in Mexico.
Tele Agent transcript on Developers · Mexico: real question, specific answer.
  1. 1Mockups illustrate the product flow — captions describe what's real.
  2. 2Figures labeled as examples show sample data, never live telemetry.
Launch facts
195destinations live
31free tools
$8entry monthly plan
Launch facts behind Developers · Mexico — 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.
Support
How does Developers · Mexico work?
Enter your trip details and get an instant answer — no account needed.
Support snippet — Developers · Mexico: 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
+1 205 880 6600
Routes toMexico
SMS + voiceEnabled
Your second line on Developers · Mexico: +1 205 880 6600 — 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.
Atlas 50GB
50 GB · 60 days
Mexico
Atlas 50GB — 50 GB · 60 days, prepaid and ready on Developers · Mexico.
  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":"ME"}'
200 OK · 156 ms
REST API behind Developers · Mexico: issue eSIMs programmatically — 200 OK in milliseconds.
  1. 1Checkout shows the full price before you pay. Nothing hidden.
  2. 2Amazon Pay handles payment securely; taxes are calculated for you.
Tele Agent
Will my phone work in Mexico?
If it's carrier-unlocked and eSIM-capable, yes. I checked Mexico bands — you're covered.
Tele Agent chat on Developers · Mexico — real questions, specific answers, zero telecom jargon.
  1. 1The Tele Agent answers in plain language — no telecom jargon.
  2. 2Every answer is specific to your trip, not a generic FAQ.
Language
FrançaisPortuguêsEnglish
Language picker on Developers · Mexico — Français, Português, English: 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.
esimgomobile.com
Plans for Mexico
Atlas 5GB5 GB · 30 days
Atlas 20GB20 GB · 30 days
Atlas 50GB50 GB · 60 days
Compare plans
Plan picker on Developers · Mexico: 5GB, 20GB, 50GB and Unlimited — pick by trip, not fine print.
  1. 1Checkout shows the full price before you pay. Nothing hidden.
  2. 2Amazon Pay handles payment securely; taxes are calculated for you.
a view of the sky from an airplane window
Ready for Mexico?
Get your eSIM
“Ready for Mexico?” — the banner on Developers · Mexico: 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?
195
destinations live
launch fact
Launch fact behind Developers · Mexico: 195 destinations live — a fixed figure, not live telemetry.
  1. 1Coverage status at a glance: data live, number available, 5G ready.
  2. 2Green means go — no guessing about what's supported.
Mexico · coverage
5 carriers · automatic selection
Coverage map on Developers · Mexico: 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.
eSIM installedYour Mexico plan is ready.
Push · just now
Push notification on Developers · Mexico: 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.
45%
data left
Usage ring on Developers · Mexico — 45% 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.
esimgomobile.com
Gerhard Lipold
esimgomobile Developers
Travel guides · 8 min read
From the blog: “esimgomobile Developers” — travel guides in about eight minutes.
  1. 1The dashboard keeps every eSIM, every trip, in one place.
  2. 2Rows show data left, days left and current city at a glance.
Chanita Sykes — Developers · Mexico: Hiking the ridge: trail map offline, emergency numbers saved.
Developers · Mexico: Hiking the ridge: trail map offline, emergency numbers saved.
Kyle Karbowski — Developers · Mexico: Café office: hotspot running, video call stable, no hotel Wi-Fi roulette.
Developers · Mexico: Café office: hotspot running, video call stable, no hotel Wi-Fi roulette.
an elderly man on video call with an agent doing a hand sign — Developers · Mexico: The museum queue skips itself: tickets bought online, straight to the door.
Developers · Mexico: The museum queue skips itself: tickets bought online, straight to the door.
man looking at a woman in a laptop screen — Developers · Mexico: The last night: photo album backed up, memories safe before wheels-up.
Developers · Mexico: The last night: photo album backed up, memories safe before wheels-up.
one world trade center new york — Developers · Mexico: The long layover: streaming, working and messaging, all covered.
Developers · Mexico: The long layover: streaming, working and messaging, all covered.
a view of the ocean from the balcony of a hotel — Developers · Mexico: Rainy-day backup plan: indoor attractions researched from the hostel bunk.
Developers · Mexico: Rainy-day backup plan: indoor attractions researched from the hostel bunk.
cheerful girlfriends walking together along sandy beach — Developers · Mexico: Check-in lines move faster when your documents are on your phone.
Developers · Mexico: Check-in lines move faster when your documents are on your phone.
aerial view of midtown manhattan skyscrapers — Developers · Mexico: Old town, new tricks: translation apps working in real time.
Developers · Mexico: Old town, new tricks: translation apps working in real time.
woman wearing a black headset — Developers · Mexico: The sunrise ferry: tickets in the wallet app, timetable cached offline.
Developers · Mexico: The sunrise ferry: tickets in the wallet app, timetable cached offline.
children watching airplane at istanbul airport — Developers · Mexico: Street level: navigation, rideshares and reviews, all instant.
Developers · Mexico: Street level: navigation, rideshares and reviews, all instant.
Erik Schereder — Developers · Mexico: Sandbox first: test provisioning without spending a cent.
Developers · Mexico: Sandbox first: test provisioning without spending a cent.
Pok Rie — Developers · Mexico: The connected trip: maps, messages and translation, all on one eSIM.
Developers · Mexico: The connected trip: maps, messages and translation, all on one eSIM.
car on street in city at night — Developers · Mexico: Migrate from Twilio in three steps — the toolkit does the heavy lifting.
Developers · Mexico: Migrate from Twilio in three steps — the toolkit does the heavy lifting.
lively nightlife in shibuya tokyo street — Developers · Mexico: Night markets and late trains — connected the whole way through.
Developers · Mexico: Night markets and late trains — connected the whole way through.
candid moment at mumbai airport viewing area — Developers · Mexico: SDKs, a CLI, and an MCP server — the developer surface, complete.
Developers · Mexico: SDKs, a CLI, and an MCP server — the developer surface, complete.
serene beachfront scene in chonburi thailand — Developers · Mexico: Museum afternoons with audio guides streaming, not buffering.
Developers · Mexico: Museum afternoons with audio guides streaming, not buffering.
new york cityscape behind sea at night — Developers · Mexico: Travelers stay online from the moment they land — no SIM queues, no roaming shock.
Developers · Mexico: Travelers stay online from the moment they land — no SIM queues, no roaming shock.
a woman inside a restaurant using a laptop — Developers · Mexico: Harbor views with full bars: coverage where travelers actually go.
Developers · Mexico: Harbor views with full bars: coverage where travelers actually go.
cozy coffee shop work session — Developers · Mexico: The red-eye recovery: hotel early-check-in arranged mid-flight.
Developers · Mexico: The red-eye recovery: hotel early-check-in arranged mid-flight.
eiffel tower architectural marvel in paris — Developers · Mexico: The commute, handled: podcasts downloaded, messages sent, no dead zones.
Developers · Mexico: The commute, handled: podcasts downloaded, messages sent, no dead zones.

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.

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.

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

  • Charge your phone before long travel days; weak signal areas drain batteries faster.
  • Download offline maps for your destination — they save data and work in dead zones.
  • Screenshot your hotel address and booking confirmations — you'll want them with no signal.
  • Set a data alert at 80% so a top-up never surprises you mid-trip.
  • 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.

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.

Visual guides

Every chart that matters for Mexico.

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.
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.Keep your WhatsAppYour existing number keeps working on the data line.24/7 supportReal humans plus the Tele Agent, around the clock.Hotspot includedShare with your laptop or tablet at no extra cost.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 · Mexico baseline, generous on purpose.
Questions, answeredThe six things everyone asks firstQuestions, answeredShort answers, no sales pitch.Which phones work?
Any carrier-unlocked, eSIM-capable iPhone or Android.
Does hotspot work?
Yes — share your connection with laptop or tablet.
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.
How fast is setup?
About two minutes: plan, QR scan, done.
Is it a contract?
No — prepaid. Service simply stops instead of charging extra.
FAQ at a glance. Six questions every traveler asks — the Developers · Mexico answers, one screen.
How esimgomobile Developers worksFour steps from question to answerHow this tool worksBuilt to answer one question well.1Get the answerClear result with next steps — save it or act on it.2Open the toolNo account needed — it loads instantly in your browser.3Apply itJump straight to the plan, setting or page it points to.4Enter your detailsTrip, data needs, destination. The tool does the math.
Tool walkthrough. Every tool on esimgomobile follows the same honest pattern: input, math, answer.
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.1Land connectedSwitch the line on when you arrive — online before baggage claim.2Scan the QR codeThe eSIM installs straight onto your phone. No store, no plastic SIM.3Pick your planChoose data for your trip — checkout takes about two minutes.
Three-step setup. Three steps, about two minutes — the Developers · Mexico ritual, no store visit.
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 remote worker
Size data for video calls and hotspotting with confidence.
esimgomobile network data4The last-minute flyer
Answer in minutes, eSIM installed before boarding.
esimgomobile network data
Use cases. Planners, sprinters, remote workers, families — who's it for.
What your gigabytes meanTypical hourly usage per activityWhat your gigabytes meanTranslate plan sizes into real travel behavior.Maps & navigation≈ 5 MB / hourMessaging & email≈ 20 MB / hourSocial browsing≈ 150 MB / hourVideo calls≈ 600 MB / hourHD streaming≈ 1.5 GB / hourTypical usage rates — actual consumption varies by app and quality settings.
Data usage guide. A 20 GB plan covers roughly two weeks of normal travel use.
esimgomobile Developers: capability profileWhat the tool is good at — illustrative profileCapability profileFive strengths, ranked by what users feel first.Always currentreflects live plans and coverageInstant resultsno waiting, no signupMobile friendlyworks on the phone in your handPrivate by designyour inputs stay in your browserShares wellsend the answer to travel companionsIllustrative profile based on tool design — not measured telemetry.
Capability profile. Capabilities measured by traveler value, not feature count.
Network at a glanceCoverage facts for MexicoNetwork at a glanceThe numbers that matter before you buy.195destinations liveesimgomobile network data5Gwhere available in Mexicoesimgomobile 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. Mexico connects to the fastest available local partner network automatically.
Plan comparison matrixEvery plan for Mexico — data, validity, best fitPlans at a glanceFour prepaid plans cover every kind of trip to Mexico.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 Mexico; pick by trip length and appetite for data.
Pro tipsFour habits of the always-connectedPro tipsSmall habits, big difference.1Install before you flyAirport Wi-Fi is the worst place to set up connectivity.2Screenshot bookingsHotel address & confirmations, available with no signal.3Download offline mapsThey save data and work in dead zones.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 · Mexico.

Your Mexico plan is two minutes away

Join thousands of travelers who land connected. Your eSIM installs in two minutes.

See plans and pricing Talk to the Tele Agent