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CAMARA is an open-source Linux Foundation project that develops and tests common APIs for accessing telecom-network capabilities. Launched with the GSMA in February 2022, it aims to make services such as number verification, SIM-swap checks and network-quality requests easier to integrate across participating operators. It does not itself provide a universal live API service: availability, access, pricing and support depend on the operator or platform exposing each API.
What the Linux Foundation announced in 2022
On February 28, 2022, during Mobile World Congress Barcelona, the Linux Foundation and the GSMA announced CAMARA, described at launch as “The Telco Global API Alliance.” The project was created to develop open, accessible APIs for telecom-network capabilities and to coordinate an industry ecosystem around them. Its initial supporters included mobile operators, cloud companies, software vendors, device makers, system integrators and other technology organizations.
The problem was fragmentation. An application seeking a network capability could face different interfaces, operator architectures and requirements in different markets. Rebuilding an integration for each provider made it harder to port services between networks and countries. CAMARA’s goal was a common, developer-oriented API layer that would make those integrations more consistent. Its intended portability is across participating implementations—not a guarantee that every API will work with every carrier worldwide.
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What CAMARA actually produces
CAMARA is best understood as an open-source standards and implementation community, not a telecom operator or a developer-facing marketplace. Its work is organized through API-specific repositories and working groups. The project publishes or coordinates:
- OpenAPI specifications and documentation for individual network APIs;
- reference implementations, test definitions and testing scenarios;
- shared data types, headers, parameters, error formats and event-notification artifacts;
- API design, security, identity and consent guidance; and
- release and version-management processes intended to help implementations converge.
The Commonalities repository contains shared assets that CAMARA subprojects are expected to use, including common schemas, error responses, event-subscription structures, API templates and testing material. CAMARA’s API Design Guide specifies OpenAPI as the description format and says API specifications should identify the relevant Commonalities release.
This work gives providers a shared contract to implement and gives developers a more consistent interface to target. It does not by itself deploy an endpoint, provide network connectivity, guarantee an uptime level or create a commercial agreement. A specification can be ready for use while a particular operator has not implemented it, or while a provider offers it only in selected markets.
Examples: from account security to network quality
CAMARA’s portfolio covers more than a single category of “5G APIs.” Examples include Number Verification, SIM Swap, Device Reachability Status, Device Roaming Status, Location Retrieval, Geofencing, Quality on Demand, Edge Discovery, Connectivity Insights, Know Your Customer functions, Carrier Billing and Population Density Data. Event-subscription APIs can also let an application receive a notification when a defined condition changes.
| API area | Potential use | What a buyer or developer still needs to check |
|---|---|---|
| Number Verification | Help verify that a user is associated with a phone number during account onboarding or sign-in. | Operator support, authentication flow, user eligibility and how the provider handles consent. |
| SIM Swap | Add a signal about a recent SIM change to a high-risk transaction or account-recovery decision. | Look-back window, data availability and false-positive handling. A result is one fraud signal, not a fraud guarantee. |
| Location Retrieval or Geofencing | Support location-aware services or check whether a device meets a location condition. | Legal basis, user consent, accuracy, freshness and geographic coverage. Location data is sensitive. |
| Device Reachability | Check whether a device appears reachable for a service interaction. | Reachability can change quickly and does not guarantee that a message or transaction will complete. |
| Quality on Demand | Request network treatment for a supported application or session. | Whether the network supports the capability, what treatment is available and the provider’s commercial terms. |
| Edge Discovery | Find suitable edge resources for an application that benefits from nearby compute. | Whether compatible edge infrastructure is deployed in the required location and can serve the workload. |
These are potential uses, not promises about any particular provider’s implementation. For example, a bank might consider number verification or SIM-swap information as inputs to account-security controls, but must assess the provider’s coverage, signal quality, authorization and regulatory requirements before relying on them.
Release labels matter. CAMARA’s September 2024 Fall24 meta-release included 25 vetted APIs across 13 subprojects, among them SIM Swap, Number Verification, Edge Discovery and Quality on Demand. Its March 2025 Spring25 announcement described 38 mature APIs, including 13 new and 23 updated APIs, while noting that other APIs remained in development. Counts refer to named releases and their criteria; they are not a permanent measure of how many APIs are available commercially. Fall24 details and Spring25 details are published by the Linux Foundation.
CAMARA and GSMA Open Gateway do different jobs
The two initiatives are complementary, but they are not interchangeable.
| CAMARA | GSMA Open Gateway | |
|---|---|---|
| Primary role | Open-source project for defining, developing, documenting and testing APIs. | Industry initiative to coordinate operator network-capability exposure and help connect standardized APIs with participating operators and ecosystem partners. |
| Typical output | Public API specifications, shared technical guidance, test material and reference implementations. | Operator-facing exposure and industry coordination, including the frameworks through which capabilities reach providers and customers. |
| What it does not guarantee | That a particular provider has deployed an API or offers it in a given country. | A universal account, rate card, endpoint or service-level agreement for all operators. |
In practical terms, CAMARA helps define what an API should look like; operator platforms and commercial providers implement and expose it. The GSMA’s Open Gateway work helps coordinate operator requirements and exposure. The CAMARA April 2026 overview describes the initiatives as complementary. The 2022 launch announcement discussed collaboration with the GSMA Operator Platform initiative; Open Gateway is the later industry context in which operator exposure is now commonly discussed.
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TM Forum Open APIs are another adjacent effort, particularly relevant to operator business and operational integration. CAMARA’s 2026 overview positions TM Forum as complementary around operator and aggregator operations and business-model frameworks. Proprietary operator or communications-platform APIs may also be alternatives: they can come with a supported product and commercial relationship, but may offer less portability between providers.
How the project has developed
- 2021: Project work began among a smaller group of operators, vendors and hyperscalers.
- February 28, 2022: CAMARA was publicly announced by the Linux Foundation and GSMA with 22 initial partners.
- September 19, 2023: The Linux Foundation said CAMARA was moving to a funded model. At that point, its announcement cited more than 250 participating organizations and more than 750 contributors.
- September 16, 2024: The project announced Fall24, its first official meta-release: 25 vetted APIs across 13 subprojects. The announcement cited participation from 396 companies and more than 1,100 contributors.
- March 31, 2025: Spring25 described 38 mature APIs, including 13 new and 23 updated, and reported 427 organizations and more than 1,250 contributors.
- October 7, 2025: CAMARA announced Fall25 as its third meta-release of stable network APIs, with expanded coverage, security profiles and a conformance program.
- 2026: Public project activity continued. The CAMARA GitHub organization identifies Fall25 as the latest API meta-release, while the Commonalities repository includes separate guidance associated with the 2026 meta-release. The two timelines should not be treated as the same version number or release event.
These figures and milestones describe project activity at the dates of the respective announcements, not current membership or proof of commercial availability. The CAMARA GitHub organization is the best starting point for the current public API portfolio and repositories. A June 9, 2026 project status update reported 1,359 people from 483 companies; participation totals are time-sensitive and do not indicate how many providers expose a given API to customers.
How a developer or enterprise can evaluate an API
- Choose the capability and check maturity. Start with the API portfolio and identify whether the API is sandbox, incubating, initial, release candidate or stable. A stable specification is generally a stronger starting point for production evaluation than an early-stage API, but is not evidence that a provider has deployed it.
- Pin a release. Select a tagged release rather than building production work against a moving
mainbranch. CAMARA repositories warn that unreleased branch changes do not carry compatibility guarantees. - Read the API repository. Review its README, versioned OpenAPI definition, data model, error behavior and implementation notes. Check which Commonalities release it references.
- Review cross-cutting requirements. Read the relevant security, interoperability, identity and consent material, along with the test guidance. A request can be syntactically correct and still fail because the caller is not authorized or the user has not completed a required consent flow.
- Find a real provider. Identify an operator, aggregator or platform that exposes that API in the target market and supports the relevant version. CAMARA publishes definitions; it does not supply a universal endpoint. The project points implementers toward provider information, including the GSMA Open Gateway operator map.
- Confirm commercial and operational terms. Ask about onboarding, credentials, supported countries and operators, subscriber eligibility, quotas, price, support, uptime commitments and production access. Test with the provider’s sandbox, then validate production behavior and failure handling.
For an enterprise, conformance should be one item on the evaluation checklist, not the final buying decision. Compare actual coverage, consent and authorization flows, latency, rate limits, data freshness, support and operational guarantees. A conformant API can still behave differently in practice because the underlying network, provider policy and deployment differ.
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Some network APIs touch information or actions with direct consequences for people and businesses: phone-number checks, SIM-swap signals, identity or KYC information, device reachability and location. Others can affect how a service uses network resources. That makes access control and privacy central requirements, not optional implementation details.
CAMARA’s Identity and Consent Management project covers API-consumer authentication and authorization, application identity and user consent. Its access and user-consent guidance discusses privacy-by-default approaches and relevant obligations, including GDPR where applicable. A standardized interface does not mean anonymous or unrestricted access: the provider still applies authentication, authorization, consent, fraud controls, operator policies and applicable law.
For financial services in particular, a network signal should not be mistaken for a definitive identity or fraud verdict. A SIM-swap result can inform a risk decision but cannot establish that a transaction is fraudulent or safe. Teams should assess the signal’s meaning and limitations, protect the data, provide appropriate review and fallback paths, and comply with the rules that apply in the jurisdictions where they operate.
Open specifications do not make network calls free
CAMARA’s 2026 overview says its API definitions and reference implementations are available under the Apache 2.0 license. That can make the technical materials free to inspect and use under the license. It does not mean that live telecom service consumption is free, that a developer can call an operator directly, or that all providers charge the same amount.
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Operators, aggregators and platforms determine how APIs are exposed and commercially packaged. Their terms may vary by country, API, volume, customer type and support level. They also determine onboarding, quotas, service-level commitments and whether a sandbox or production account is available. Verify those details with the specific provider rather than inferring them from a CAMARA repository or API release.
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What CAMARA does—and does not—mean for adoption
The project reduces one important source of friction: each provider inventing a different API contract for similar network capabilities. Its shared specifications, testing material and guidance give operators and developers a common technical foundation. Public repositories also let companies collaborate on interfaces before or alongside commercial deployment.
But the gap between an API definition and a usable service remains material. A developer may find a repository but no local live endpoint; an API may be in a release but not available from the developer’s operators; a provider may support an older version; or a sandbox may not reflect production behavior. A nominally successful response may still contain information that is approximate, stale or subject to coverage limits. Even where an API is exposed, proprietary fields, policies or commercial restrictions can remain.
So the practical question is not only “Is this API in CAMARA?” It is also: which provider exposes it, in which markets, at what maturity and version, under what consent and security flow, with what reliability and commercial terms? CAMARA makes those conversations more standardized; it does not remove the need to have them.
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Bottom line
CAMARA began in 2022 as a Linux Foundation and GSMA-backed effort to make telecom-network capabilities easier to access through interoperable APIs. By 2026, it had a substantial public specification and implementation ecosystem, successive meta-releases and active work on shared guidance. Its importance lies in creating a common technical foundation—not in operating a global API service. Developers and businesses should use CAMARA to evaluate and build against shared API definitions, then verify live provider support, security, consent, coverage and commercial terms market by market.
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