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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 Sierra Leone

Using developers in Sierra Leone? You are on the local edition — key facts for Sierra Leone (capital Freetown, dial code +232) are below. esimgomobile plans for Sierra Leone are live now — monthly plans from $8/mo and one-time travel packs from $3.65, with live checkout.

CapitalFreetown
Dial code+232
CurrencySierra Leonean leone (SLE)
Time zoneUTC+0
Main languagesEnglish

Plans are live — see plans and pricing.

Inside the app

The product, up close.

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

Why travelers pick it
  • Instant QR install
  • One-tap top-up
  • 5G where available
Why travelers pick Developers · Sierra Leone: Instant QR install, One-tap top-up, 5G where available.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
Virtual number
+1 205 081 3889
Routes toSierra Leone
SMS + voiceEnabled
Your second line on Developers · Sierra Leone: +1 205 081 3889 — real number, SMS and voice enabled.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
esimgomobile.com
API quickstart
curl https://api.esimgomobile.com/v1/esims \
  -H "Authorization: Bearer $KEY" \
  -d '{"country":"SI"}'
200 OK · 147 ms
REST API behind Developers · Sierra Leone: 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.
couple walking down the stairs in santorini greece
Ready for Sierra Leone?
Get your eSIM
Live now · no waitlist
“Ready for Sierra Leone?” — the CTA card on Developers · Sierra Leone: 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.
woman with red cap talking on laptop
Get connected
1 Pick a plan2 Scan QR3 Land online
Three steps on Developers · Sierra Leone: 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 plan
Atlas UnlimitedUnlimited · 30 days
Sierra Leone
Install eSIM
Atlas Unlimited on Developers · Sierra Leone — Unlimited · 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.
Tele Agent transcript
Can I keep my WhatsApp number?
Yes — your eSIM is data-first, so WhatsApp keeps working on your existing number in Sierra Leone.
Tele Agent transcript on Developers · Sierra Leone: 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?
Language
EspañolPortuguêsEnglish
Language picker on Developers · Sierra Leone — Español, 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.
Network
5G
Sierra Leone connected
Network widget for Developers · Sierra Leone: 5G, full bars — zero ambiguity about the connection.
  1. 1Illustrative speed readout: sample carrier, city and latency figures.
  2. 2The meter demonstrates the readout — figures are examples, not live measurements.
Support
How does Developers · Sierra Leone work?
Enter your trip details and get an instant answer — no account needed.
Support snippet — Developers · Sierra Leone: 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
this was a fun hike we found fresh bear tracks and lots of snow even though it was mid october
esimgomobile Developers…rst, down to the SIM
Travel guides · 8 min read
From the blog: “esimgomobile Developers…rst, down to the SIM” — travel guides in about eight minutes.
  1. 1Three plans side by side so the trade-off is obvious.
  2. 2Pick by trip length, not by decoding fine print.
esimgomobile.com
Checkout
Atlas 20GB — Sierra Leonetotal
Taxescalculated
Pay securely
256-bit encrypted · Amazon Pay
Secure checkout on Developers · Sierra Leone: Atlas 20GB, 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.
Coverage
195
destinations live
Sierra Leone5G ready
Check coverage
Coverage at a glance for Developers · Sierra Leone: 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.
Launch facts
195destinations live
31free tools
$8entry monthly plan
Launch facts behind Developers · Sierra Leone — 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.
Tele Agent
What happens when my data runs out in Sierra Leone?
You get a heads-up at 80%, then one-tap top-up. No roaming-bill surprises in Sierra Leone.
Tele Agent chat on Developers · Sierra Leone — real questions, specific answers, zero telecom jargon.
  1. 1The plan card shows exactly what you're buying — data, days, destination.
  2. 2One tap starts the two-minute QR install.
Sierra Leone · coverage
5 carriers · automatic selection
Coverage map on Developers · Sierra Leone: 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?
Antoine Pittet
“Customs line in Sierra Leone was the perfect time to install — done by baggage claim.”
Sam W.Verified traveler · Sierra Leone
Traveler review for Developers · Sierra Leone: “Customs line in Sierra Leone was the perfect time to install — done by baggage claim.” — Sam W..
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
Sierra Leone · 5G
Signal widget on Developers · Sierra Leone: 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.
Speed test
903Mbps
5G · Sierra Leone · 66 ms
Illustrative speed readout on Developers · Sierra Leone: 903 Mbps, 66 ms — example figures, not live measurements.
  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.
21%
data left
Usage ring on Developers · Sierra Leone — 21% 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.
smartphone with earth wallpaper — Developers · Sierra Leone: Migrate from Twilio in three steps — the toolkit does the heavy lifting.
Developers · Sierra Leone: Migrate from Twilio in three steps — the toolkit does the heavy lifting.
Chanita Sykes — Developers · Sierra Leone: Rain or shine, the connection holds — weather doesn't throttle data.
Developers · Sierra Leone: Rain or shine, the connection holds — weather doesn't throttle data.
Vjanodic WERSOV — Developers · Sierra Leone: SDKs, a CLI, and an MCP server — the developer surface, complete.
Developers · Sierra Leone: SDKs, a CLI, and an MCP server — the developer surface, complete.
Manzoni Studios — Developers · Sierra Leone: The window seat office: emails sent somewhere over the ocean.
Developers · Sierra Leone: The window seat office: emails sent somewhere over the ocean.
man and woman sitting in a cafe and using laptops while having a coffee and cake — Developers · Sierra Leone: City lights after dark — the eSIM doesn't care what time it is.
Developers · Sierra Leone: City lights after dark — the eSIM doesn't care what time it is.
graffiti laden rooftop overlooking new york skyline — Developers · Sierra Leone: Trailheads and lookouts: offline maps downloaded, just in case.
Developers · Sierra Leone: Trailheads and lookouts: offline maps downloaded, just in case.
photo of the city against a cloudy sky — Developers · Sierra Leone: The departure board flips: gate found, lounge located, all on the eSIM.
Developers · Sierra Leone: The departure board flips: gate found, lounge located, all on the eSIM.
a man standing on the mountain — Developers · Sierra Leone: Old town, new tricks: translation apps working in real time.
Developers · Sierra Leone: Old town, new tricks: translation apps working in real time.
people in airport terminal — Developers · Sierra Leone: The business trip: client deck synced, video call joined from the taxi.
Developers · Sierra Leone: The business trip: client deck synced, video call joined from the taxi.
brooklyn bridge in front of skyscrapers in new york city usa — Developers · Sierra Leone: Border crossings without the paperwork shuffle: ID photos stored on the phone.
Developers · Sierra Leone: Border crossings without the paperwork shuffle: ID photos stored on the phone.
aerial view from airplane over barren landscape — Developers · Sierra Leone: The welcome home: eSIM deleted in one tap, no contract to cancel.
Developers · Sierra Leone: The welcome home: eSIM deleted in one tap, no contract to cancel.
people working as call center agents — Developers · Sierra Leone: The commute, handled: podcasts downloaded, messages sent, no dead zones.
Developers · Sierra Leone: The commute, handled: podcasts downloaded, messages sent, no dead zones.
man video calling using a laptop while sitting on a chair — Developers · Sierra Leone: The status page is public — uptime you can verify, not claim.
Developers · Sierra Leone: The status page is public — uptime you can verify, not claim.
black headset with mouthpiece — Developers · Sierra Leone: Rooftop check-in: boarding passes and hotel keys, all on the phone.
Developers · Sierra Leone: Rooftop check-in: boarding passes and hotel keys, all on the phone.
women and man sitting by table with laptop — Developers · Sierra Leone: The group chat stays live across every border you cross.
Developers · Sierra Leone: The group chat stays live across every border you cross.
Taryn Elliott — Developers · Sierra Leone: Downtown, connected: the eSIM finds the fastest local network on its own.
Developers · Sierra Leone: Downtown, connected: the eSIM finds the fastest local network on its own.
man working in call center — Developers · Sierra Leone: Café office: hotspot running, video call stable, no hotel Wi-Fi roulette.
Developers · Sierra Leone: Café office: hotspot running, video call stable, no hotel Wi-Fi roulette.
a man and a person sitting on the beach — Developers · Sierra Leone: Lost in the medina, found by GPS: the blue dot never lies.
Developers · Sierra Leone: Lost in the medina, found by GPS: the blue dot never lies.
man hand over smartphone — Developers · Sierra Leone: Golden hour, fully online — photo backups upload before dinner.
Developers · Sierra Leone: Golden hour, fully online — photo backups upload before dinner.
hiker trekking through snowy mountain landscape — Developers · Sierra Leone: Sunrise hikes start with a weather check — data on, boots on.
Developers · Sierra Leone: Sunrise hikes start with a weather check — data on, boots on.

Explainer

esimgomobile Developers…rst, down to the SIM: the full picture

The short version: prepaid travel eSIMs across 195 destinations, installed by QR code in two minutes, managed from a dashboard, with an AI agent on call when you need a human-style answer fast.

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. 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

  • If a page won't load, toggle airplane mode for ten seconds — it forces a fresh network attach.
  • Set a data alert at 80% so a top-up never surprises you mid-trip.
  • Save your eSIM QR code somewhere safe (email it to yourself) in case you switch phones mid-trip.
  • Screenshot your hotel address and booking confirmations — you'll want them with no signal.
  • Hotspot sparingly: one laptop tethered all day can burn through a week of phone data.
  • Buy and install your eSIM before departure — airport Wi-Fi is the worst place to set up connectivity.

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.

The data room

Sierra Leone, visualized.

esimgomobile Developers…rst, down to the SIM — data dashboard

The product's headline numbers, switchable by dataset.

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

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

esimgomobile Developers…rst, down to the SIM — data dashboard. Plan allowances, validity windows and a typical usage curve for esimgomobile Developers…rst, down to the SIM — hover for exact values.
esimgomobile Developers…rst, down to the SIM: capability profileWhat the tool is good at — illustrative profileCapability profileFive strengths, ranked by what users feel first.Always currentreflects live plans and coverageMobile friendlyworks on the phone in your handInstant resultsno waiting, no signupPrivate by designyour inputs stay in your browserShares wellsend the answer to travel companionsIllustrative profile based on tool design — not measured telemetry.
Capability profile. Ranked by what travelers notice first, not by marketing priority.
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.6 languagesThe app speaks your language, wherever you're from.24/7 supportReal humans plus the Tele Agent, around the clock.One-tap top-upMore data in seconds — no new QR code.5G where availableFastest local partner network, selected automatically.Keep your WhatsAppYour existing number keeps working on the data line.
Included with every plan. 5G, hotspot, WhatsApp continuity, top-up, support, six languages — all tiers.
Network at a glanceCoverage facts for Sierra LeoneNetwork at a glanceThe numbers that matter before you buy.195destinations liveesimgomobile network data5Gwhere available in Sierra Leoneesimgomobile 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. Sierra Leone connects to the fastest available local partner network automatically.
How esimgomobile Developers…rst, down to the SIM worksFour steps from question to answerHow this tool worksBuilt to answer one question well.1Open the toolNo account needed — it loads instantly in your browser.2Enter your detailsTrip, data needs, destination. The tool does the math.3Apply itJump straight to the plan, setting or page it points to.4Get the answerClear result with next steps — save it or act on it.
Tool walkthrough. Developers · Sierra Leone, demystified: open, enter, answer, act.
Pro tipsFour habits of the always-connectedPro tipsSmall habits, big difference.1Download offline mapsThey save data and work in dead zones.2Keep home SIM for 2FABank codes still arrive while data runs on the eSIM.3Screenshot bookingsHotel address & confirmations, available with no signal.4Check unlock statusCarrier-locked phones can't add an eSIM — verify first.
Pro tips. Veterans do all four without thinking.
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 family organizer
One tool, every traveler's needs covered.
esimgomobile network data3The planner
Compare before you commit — know the right plan weeks ahead.
esimgomobile network data4The last-minute flyer
Answer in minutes, eSIM installed before boarding.
esimgomobile network data
Use cases. Six traveler shapes, one tool — Developers · Sierra Leone'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. A 20 GB plan covers roughly two weeks of normal travel use.
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.
How fast is setup?
About two minutes: plan, QR scan, done.
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.
FAQ at a glance. Short answers, no sales pitch — the questions first, always.
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.
Plan comparison matrixEvery plan for Sierra Leone — data, validity, best fitPlans at a glanceFour prepaid plans cover every kind of trip to Sierra Leone.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 · Sierra Leone: four plans, four trip shapes — the matrix carries no fine print.

Your Sierra Leone 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