Connectivity infrastructurefor your brand.

Issue an eSIM under your name. It already runs on phones, watches, tablets, and laptops that have the chip. Clubs and airlines sell one next to a membership or a booking. Start with a test profile. Nothing is charged.

Test profile · No charge · No carrier contract

Start with a test eSIM Read the playbookFree · email required

Carriers sell access.You need infrastructure.

Procurement

Months before a profile.

A carrier agreement, a lawyer, and a portal written for people who already run a network. That is the current path to one downloadable SIM.

Access

Built for incumbents.

The tools assume a BSS team. Founders and product teams are left integrating around an industry that was not designed for them.

The actual job

A device needs a profile.

Phones, watches, tablets, and connected products need connectivity. That should be an API call, not a relationship.

Already in market

The eSIM left the phone.Brands are selling it.

A downloadable profile now ships in more devices, and inside more products, than a consumer phone plan. The name on it is the name the customer already knows.

Devices

More hardware than a handset.

Cellular watches, cellular tablets, and some laptops already provision a downloadable SIM. Wi-Fi-only hardware does not. If settings offer “add a mobile plan,” the chip is present.

Memberships

Clubs sell it under their name.

FC Barcelona sells travel data as Barça Mobile. Millwall sells Millwall Mobile as a card or an eSIM, and the plan supports the club. The customer already trusts the brand.

Travel

Airlines sell it with the trip.

SWISS, Lufthansa, Austrian, and Brussels sell a travel eSIM beside the booking. KLM routes passengers to one as well. Whether yours is included in the fare is a product decision.

Put the profile inside the product you already sell. A membership. A match. A fare. A device. Issue one test profile. Nothing is charged. When it is real, put your name and your price on the offer.

Start with a test eSIM

Public launches, not Carrier customers: FC Barcelona, Millwall FC, Lufthansa Group, KLM.

Built by operators.Exposed as an API.

We spent the months on contracts, counsel, and carrier portals. Carrier is the layer we wanted: one authentication model, a public spec, and the networks underneath.

MCP tools in the operator catalog: 134
Networks on one account: 450+
Test profile, available now: 1
Charged for that test profile: $0

From installto a branded offer.

Three steps. The first configures your agent. It does not issue a profile.

01Once

Install the skill

One line. Your agent reads it and follows the same path every time. The install does not issue a profile.

npx skills add https://carrier.llc -g -a cursor -a claude-code -y

02No charge

Issue a test profile

Ask for test_global_1gb. It is a fixture. Nothing is charged, and no live network is used.

Issue the test profile test_global_1gb.

03Production

Attach your offer

A live profile uses a saved product. Pass that product id, with your name, price, and customer.

A production eSIM takes a saved product id.

Four objects.The rest is implementation.

Intent: A request to attach a profile to an order. Sending the same intent twice does not issue a second eSIM.
Product: The offer you sell: data, duration, countries, and price. Saving a product does not charge a customer.
Package: The allowance on one issued profile. Not a code package such as @carrierllc/sdk.
Subscriber: One line, and the person or device that line belongs to.

Operating a fleet?Use the full catalog.

The operator MCP exposes the controls a carrier uses to run many SIMs. Keep it off the path that issues one profile into an app. An agent with every tool will call the wrong one.

claude mcp add --transport http carrier https://mcp.carrier.llc/mcp

Fleet operator

Who used the most data this month?

Pause the subscriber in Spain.

Five lines. One paused.

The cost of waitingis a year.

Without Carrier

Nine months on a single carrier contract
Legal fees before the first profile
A separate login for every portal
Competitors in market while procurement is still open

With Carrier

A test profile the day you request it
No charge for that test profile
Your name, your price, your customer
The networks stay underneath

Ship the connectivityyour product is missing.

A carrier agreement is no longer the way to find out whether you can sell a profile. The test eSIM is that proof.

One platform.Several ways in.

01Start here

Issue a test eSIM.Nothing is charged.

If you want the model in writing first, the playbook covers the same three steps.

Start with a test eSIM Read the playbook