Introduction to Open APIs
Leading the industry in Open API standards
Leading the industry in Open API standards
TM Forum's Open API project has been at the forefront of the challenge to find the right mechanism for CSPs and vendors to work together in a faster and more flexible way. A new generation of APIs are now required to drive future growth, speeding up the ‘time to deliver value’ and accelerating the deployment of new services and products by enabling plug-and-play software integration that will revolutionize the software lifecycle for telecoms.
NEW TM Forum’s Gen5 Open APIs for a future proof ecosystem
TM Forum has launched its Gen5 Open APIs to address these needs. These “5th generation APIs” will support the latest event-driven architectures, provide a simpler experience for developers, and enable the intent-based automation which is essential to the efficient operation and management of telecoms IT and networks.
These Gen5 Open APIs create a pathway to simplified APIs for use in industry specific applications such as WLAN, 5G slicing etc. TM Forum is partnering with other standards development organizations such as GSMA Open Gateway / CAMARA to ensure standardization and interoperability across the industry.
Built by the members, for the members
TM Forum Open APIs have been widely adopted by the industry as a standard interoperability method, with more than 900,000 downloads by 50,000 software developers from 2,800 organizations.
Over 70+ REST-based, Event driven and Domain Specific Open APIs have been collaboratively developed by TM Forum members working within the Open API project. This team creates a full set of Open API assets for members to implement Open APIs - from guidelines (REST API Design Guidelines), to specification, to usable code, through to the compliance test kits - see the Open API directory for more details.
Open API certifications
Certification leaderboard
Company Name | APIs certified | Latest date | Badge |
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| August 2024 | ![]() |
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| July 2024 | ![]() |
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| June 2024 | ![]() |
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| December 2023 | ![]() |
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| August 2024 | ![]() |
Why not improve your skills with focused training
Find out about other TM Forum skills training and conformance courses or get in touch and we will contact you
Let's create the future - together
Let's create the future - together
Being part of the Open API project is a powerful way to demonstrate your organization’s position at the heart of innovation, with the potential to transform the interoperability requirements within the communications industry. Find out more: