GSMA Open Gateway
What is GSMA Open Gateway?
GSMA Open Gateway is a global framework of common Network APIs designed to provide developers, cloud providers and enterprises with standardised access to capabilities provided by mobile operator networks.
Modern mobile networks contain information and functions that can provide significant value to digital applications.
Examples include the ability to:
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verify a user's phone number determine whether a SIM has recently changed;
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validate selected identity information;
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check whether a device is roaming;
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retrieve or verify network location;
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determine whether a device is reachable;
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request network quality;
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perform carrier billing; and
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access other operator network capabilities.
Before industry-wide Network API initiatives, these functions were commonly exposed through operator-specific interfaces, bilateral integrations or specialised telecom services.
GSMA Open Gateway aims to turn them into a common global API ecosystem.
The GSMA defines Open Gateway as a global framework of common network APIs that simplifies access to mobile operator networks and exposes core network capabilities to developers and cloud providers.
The APIs used as northbound Service APIs under Open Gateway are defined through the CAMARA project.
How does GSMA Open Gateway work?
An application does not normally communicate directly with internal operator network functions.
Instead, a mobile operator deploys an Open Gateway-compatible exposure platform.
The operator makes one or more standardised Network APIs available through that platform.
An enterprise application, developer platform, cloud provider or authorised aggregator obtains API access and submits a request.
The Open Gateway platform handles the request, applies security and policy controls, communicates with the necessary operator systems, and returns a standardised API response.
A simplified model is:
Enterprise Application → API Provider / Aggregator → Open Gateway Operator Platform → Mobile Network Capability
For direct operator access, the application may communicate with the operator's API platform.
In aggregated models, a channel partner or API aggregator may provide one commercial interface covering multiple operators.
The technical objective is that the underlying Service API remains sufficiently standardised for an application to use the same API semantics across compatible providers. GSMA technical guidelines describe models where aggregators and operators expose the same CAMARA northbound interface, while allowing other commercial or aggregation models as well.
Standardised Network APIs
Open Gateway is built around the idea that developers should consume telecom capabilities in the same way they consume cloud APIs.
Rather than needing specialised telecom signalling knowledge, developers interact with REST-style APIs and documented schemas.
Examples include:
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Number Verification
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SIM Swap
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KYC Match
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Device Swap
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Device Roaming Status
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Location Verification
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Location Retrieval
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Quality on Demand
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Carrier Billing
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Device Identifier
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Device Reachability Status
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Number Recycling
GSMA maintains a catalogue of Open Gateway API descriptions and identifies their corresponding CAMARA definitions.
CAMARA and Open Gateway
CAMARA is fundamental to the technical model.
The GSMA states that Open Gateway northbound Service APIs are defined within CAMARA.
CAMARA develops and tests API definitions, while GSMA Open Gateway focuses on creating the operator framework, ecosystem, commercial accessibility and cross-market deployment model.
A simplified relationship is:
GSMA / operator ecosystem defines requirements and commercial framework
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CAMARA develops common API specifications
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Operators and API providers deploy the APIs
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Developers consume the capability
This division is intended to prevent each operator from independently inventing a different API for the same function.
Authentication, Authorisation and Consent
Network APIs can involve sensitive subscriber or network information.
Open Gateway implementations therefore require appropriate authentication and authorisation.
Depending on the API, an application may use an OAuth/OpenID Connect access-token flow and may require user-specific authorisation.
The CAMARA Identity and Consent Management framework provides common security profiles for these API interactions.
For APIs involving personal information, the applicable consent and legal-basis requirements depend on:
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the API;
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the purpose for which it is used;
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the operator;
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the API provider;
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local legislation; and
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the commercial agreement.
The technical API does not eliminate those responsibilities.
Why is GSMA Open Gateway important for Mobile Operators & Enterprises?
Mobile networks serve billions of connected devices and maintain authoritative information about subscriptions, SIMs, network attachment, roaming, network location and connectivity.
However, most enterprise applications historically could not access these capabilities in a consistent way.
Open Gateway provides a standard mechanism for exposing that network intelligence.
For enterprises, the main value is easier access to operator-level information without maintaining custom integrations with every carrier.
For operators, it provides an industry framework for exposing and monetising network capabilities.
For developers, it creates a more familiar API consumption model.
GSMA specifically identifies application portability, simplified integration, faster service deployment and seamless experiences as key benefits.
Key Benefits / Features of GSMA Open Gateway
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Common Network APIs
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Access to operator network intelligence
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Standardised northbound interfaces
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Multi-operator interoperability
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Application portability
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Reduced integration complexity
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Direct operator or aggregated access models
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Developer-friendly API consumption
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Support for cloud and CPaaS integrations
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Fraud-prevention capabilities
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Mobile identity capabilities
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Location capabilities
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Network-quality controls
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Charging capabilities
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Cross-country expansion
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Alignment with CAMARA
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Common security and consent models
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Operator-level network signals not ordinarily available through web APIs
Examples of GSMA Open Gateway Use Cases
Banking fraud prevention
A bank may combine SIM Swap, Number Verification, Device Swap and KYC Match.
Before approving a high-value transaction, it may ask:
Does the current mobile subscription correspond to the expected number? Has the SIM changed recently? Has the device changed? Do selected identity attributes match the operator's verified record?
Each API provides a different signal.
Together, they can strengthen the bank's fraud-risk decision process. GSMA specifically identifies SIM Swap, KYC Match and Number Verification as APIs being used to support fraud prevention and customer authentication.
Digital onboarding
A fintech application can use Number Verification to confirm the mobile subscription and KYC Match to validate customer-provided information.
This may reduce dependence on SMS OTP and manual identity checks.
Account recovery
An application handling a password-reset request can check SIM Swap before relying on an SMS-delivered authentication code.
A recent SIM change may trigger step-up authentication.
eCommerce
Online marketplaces may use KYC Match to validate seller or buyer attributes, Number Verification for mobile-number possession and Carrier Billing for supported transactions.
Location-based services
Location Verification can confirm whether a device is within a specified geographical area without requiring an application to depend solely on device-supplied GPS data.
Location Retrieval may provide operator-derived device location where the API, permission and legal framework allow it.
Gaming and media
Applications can use Quality on Demand or related network-performance APIs to request connectivity characteristics appropriate for demanding application sessions.
Remote operations
Network APIs may support industrial, automotive, drone, video or IoT services through combinations of device location, connectivity insights and network-quality APIs.
GSMA documents use cases involving remote monitoring, smart video, connected systems and other network-aware services.
Open Gateway vs. Traditional Telecom APIs
Traditional operator APIs may be proprietary.
An operator might define its own endpoint, authentication method and response model.
A second operator could expose the same capability completely differently.
Open Gateway attempts to remove that inconsistency through CAMARA-standardised APIs.
The objective is not that every commercial arrangement becomes identical, but that the developer-facing technical interfaces become more predictable and portable.
Open Gateway vs. CPaaS
Open Gateway should not be confused with a CPaaS.
A Communications Platform as a Service normally exposes communications services such as:
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SMS
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voice
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phone numbers
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messaging applications
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verification
Open Gateway focuses on exposing underlying mobile-network capabilities.
A CPaaS provider or cloud platform may, however, become a channel through which Open Gateway Network APIs are offered.
Open Gateway vs. CAMARA
The main difference between Open Gateway and CAMARA is that GSMA Open Gateway is the global industry framework and CAMARA is the open-source API development project.
The terms are therefore complementary rather than interchangeable.
API Availability
An API being defined by CAMARA does not mean it is automatically available on every mobile network.
Commercial availability varies according to:
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country;
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operator;
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API;
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aggregator;
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commercial launch status; and
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local policy or regulation.
GSMA maintains public launch and deployment information for Open Gateway capabilities.
Common questions about GSMA Open Gateway
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Is GSMA Open Gateway a single API? No. It is an initiative and framework containing many Network APIs.
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Does GSMA operate the APIs itself? The APIs are typically implemented and exposed by mobile operators and authorised API platforms or channel partners.
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Is Open Gateway the same as CAMARA? No. CAMARA develops the technical API definitions; Open Gateway is the broader GSMA operator framework through which those APIs are deployed and commercialised.
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Does Open Gateway replace mobile operators? No. The underlying network capability remains provided by the mobile operator.
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Can one API request reach every operator globally? Not automatically. Aggregators may provide simplified multi-operator access, but API availability and commercial integration depend on the provider and participating networks.
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Are Open Gateway APIs only for mobile operators? No. They are primarily intended to make network capabilities useful to developers, enterprises, cloud providers, CPaaS providers, financial institutions, digital platforms and other authorised API consumers.
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Is Open Gateway limited to fraud APIs? No. Authentication and fraud prevention are major categories, but APIs also cover location, communication quality, device information, computing and payments.
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Is 5G required? Not for every API. Some network capabilities are available using existing network infrastructure. 5G expands the range and programmability of capabilities that operators can expose.
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Can developers see which APIs are commercially available? Yes. GSMA provides public launch-status information, and CAMARA API pages link to availability information.
Related Terms
CAMARA; Network APIs; Network as a Service; Operator Platform; API Gateway; Mobile Network Operator; API Aggregator; Channel Partner; CPaaS; Number Verification; SIM Swap; Device Swap; KYC Match; Location Verification; Quality on Demand; Carrier Billing; OAuth 2.0; OpenID Connect; Consent Management; 4G; 5G; Network Exposure.
Sources
GSMA Open Gateway API Descriptions
GSMA Open Gateway Documentation Portal
Open Gateway Public Launch Status
Last Updated: October 2026