Introduction to Open APIs
Leading the industry in Open API standards
Leading the industry in Open API standards
TM Forum's Open APIs 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. Ever since the first Hackathon in December 2013, where 150 coders gathered in a conference room in San Francisco to make the first public use of TM Forum’s Open APIs, we have been driving the industrywide push to standardize and simplify interoperability.
NEW TM Forum’s Gen5 Open APIs for a future proof ecosystem
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.
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. At DTW 2023 we launched the first 20+ Gen5 REST based APIs. These APIs are now available to our members within the Open API table.
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 640,000 downloads by 39,000 software developers from 2,500 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 table for more details.
Open API certifications
Certification leaderboard
Company Name | APIs certified | Latest date | Badge |
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![]() | Certification:
| September 2023 | ![]() |
![]() | Certification:
| September 2023 | ![]() |
![]() | Certification:
| October 2023 | ![]() |
![]() | Certification:
| August 2022 | ![]() |
![]() | Certification:
| September 2023 | ![]() |
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: