Open Digital Architecture

Introduction to Open APIs

TM Forum’s Open API program is a global initiative to enable seamless connectivity, interoperability and portability across complex ecosystem services

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.

A growing industry-led community

TM Forum’s growing community of over 150+ of the world’s leading CSPs and technology ecosystem participants has signed the Open API Manifesto as a public endorsement of the power of Open APIs. Of these, 34 CSPs have agreed to position TM Forum Open APIs as a preferred requirement in their IT RFPs.

Products that comply with standardized, machine-readable software components would help CSPs create differentiated products and services much more quickly, according to Lester Thomas, Chief IT Systems Architect at Vodafone Group.

This has all led to the TM Forum members creating a set Open APIs, for an open digital ecosystem that provides critical management functionality for digital services. All of which are readily available to our members within the Open API table.

Discover the TM Forum Open API table

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Open API dashboard

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 table

Access the TM Forum Open APIs portfolio where you can find specifications, downloadable code, test kits for Rest, Ayscnc and domain specific APIs.

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Open API conformance and leader board

Open API Conformance certification for suppliers verifies the successful implementation of Open APIs in commercial products and real-world deployments, and demonstrates to clients and partners your commitment to industry standards.

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Join the Open API project

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Open API certifications

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ODA DIrectory

Certification leaderboard

Company Name	APIs certified	Latest date	Scope
Tecnotree	Certification: TMF620 - Product Catalog Management TMF621 - Trouble Ticket TMF622 - Product Ordering TMF629 - Customer Management TMF629 - Customer Management TMF629 - Customer Management TMF632 - Party Management TMF633 - Service Catalog Management TMF634 - Resource Catalog Management TMF635 - Usage Management TMF637 - Product Inventory Management TMF637 - Product Inventory Management TMF638 - Service Inventory Management TMF639 - Resource Inventory Management TMF640 - Service Activation and Configuration TMF641 - Service Ordering Management TMF644 - Privacy Management TMF645 - Service Qualification Management TMF646 - Appointment Management TMF646 - Appointment TMF646 - Appointment Management TMF648 - Quote Management TMF648 - Quote Management TMF651 - Agreement Management TMF651 - Agreement Management TMF652 - Resource Ordering Management TMF653 - Service Test Management TMF654 - Prepay Balance Management TMF662 - Entity Catalog Management TMF663 - Shopping Cart Management TMF666 - Account Management TMF667 - Document Management TMF668- Partnership Type Management TMF669 - Party Role Management TMF670 - Payment Method TMF670 - Payment Method Management TMF671 - Promotion Management TMF672 - User Role Permission Management TMF673 - Geographic Address Management TMF674 - Geographic Site Management TMF676 - Payment Management TMF677 - Consumption Management TMF678 - Customer Bill Management TMF679 - Product Offering Qualification TMF681 - Communication TMF683 - Party Interaction Management TMF683 - Party Interaction Management TMF683 – Party Interaction TMF687 - Stock Management TMF696 - Risk Management TMF699 - Sales Management TMF705 - Test Environment TMF706 - Test Data TMF707 - Test Result TMF708 - Test Execution TMF709 - Test Scenario TMF710 - General Test Artifact TMF720 - Digital Identity TMF724 - Incident Management See certified APIs (59)	September 2023	Open APIOpen APIOpen APIReal World Open APIOpen APIReal World Open APIOpen APIOpen APIOpen APIOpen APIReal World Open APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIReal World Open APIOpen APIReal World Open APIOpen APIOpen APIOpen APIReal World Open APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIReal World Open APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIReal World Open APIOpen APIReal World Open APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen API
Globetom	Certification: TMF620 - Product Catalog Management TMF621 - Trouble Ticket TMF622 - Product Ordering TMF629 - Customer Management TMF632 - Party Management TMF633 - Service Catalog Management TMF634 - Resource Catalog Management TMF635 - Usage Management TMF637 - Product Inventory Management TMF638 - Service Inventory Management TMF639 - Resource Inventory Management TMF640 - Service Activation and Configuration TMF641 – Service Ordering Management TMF642 - Alarm Management TMF644 - Privacy Management TMF645 - Service Qualification Management TMF646 - Appointment Management TMF648 - Quote Management TMF651 - Agreement Management TMF652 - Resource Order Management TMF653 - Service Test Management TMF654 - Prepay Balance Management TMF655 - Change Management TMF656 - Service Problem Management TMF657 - Service Quality Management TMF662 - Entity Catalog Management TMF663 - Shopping Cart Management TMF664 - Resource Function Activation Management TMF666 - Account Management TMF667 - Document Management TMF668 - Partnership Type Management TMF669 - Party Role Management TMF670 - Payment Method Management TMF671 - Promotion Management TMF672 - User Role Permission Management TMF673 - Geographic Address Management TMF674 - Geographic Site Management TMF676 - Payment Management TMF677 - Usage Consumption Management TMF678 - Customer Bill Management TMF679 - Product Offering Qualification TMF680 - Recommendation Management TMF681 - Communication TMF683 - Party Interaction Management TMF687 - Stock Management TMF699 - Sales Management TMF702 - Resource Activation Management TMF704 - Test Case Management TMF705 - Test Environment Management TMF706 - Test Environment Management TMF707 - Test Result Management TMF708 - Test Execution Management TMF709 - Test Scenario Management TMF710 - General Test Artifact Management TMF720 - Digital Identity Management See certified APIs (55)	September 2023	Open APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen API
Whale Cloud Technology Co., Ltd	Certification: TMF620 - Product Catalog Management TMF621 - Trouble Ticket TMF622 - Product Ordering TMF629 - Customer Management TMF632 - Party Management TMF633 - Service Catalog Management TMF634 - Resource Catalog Management TMF635 - Usage Management TMF637 - Product Inventory Management TMF638 - Service Inventory Management TMF639 - Resource Inventory Management TMF640 - Service Activation and Configuration TMF641 - Service Ordering Management TMF642 - Alarm Management TMF644 - Privacy Management TMF645 - Service Qualification Management TMF646 - Appointment TMF648 - Quote Management TMF651 - Agreement Management TMF652 - Resource Ordering Management TMF654 - Prepay Balance Management TMF655 - Change Management TMF656 - Service Problem Management TMF657 - Service Quality Management TMF662 – Entity Catalog Management TMF663 - Shopping Cart TMF666 - Account Management TMF667 - Document Management TMF668 - Partnership Type Management TMF669 - Party Role Management TMF670 - Payment Method Management TMF671 - Promotion Management TMF672 - User Role Permission Management TMF673 - Geographic Address Management TMF674 - Geographic Site Management TMF676 - Payment Management TMF677 - Usage Consumption Management TMF678 - Customer Bill Management TMF679 - Product Offering Qualification TMF680 - Recommendation Management TMF681 - Communication TMF683 - Party Interaction Management TMF687 - Stock Management TMF699 - Sales Management TMF704 - Test Case Management TMF705 - Test Environment Management TMF706 - Test Data Management TMF707 - Test Result Management TMF708 - Test Execution Management TMF709 - Test Scenario Management TMF710 - General Test Artifact Management TMF720 - Digital Identity Management TMF915 – AI Management See certified APIs (53)	September 2023	Open APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen API
Jio Platforms Limited	Certification: TMF620 - Product Catalog Management TMF621 - Trouble Ticket TMF622 - Product Ordering TMF629 - Customer Management TMF632 - Party Management TMF633 - Service Catalog Management TMF634 - Resource Catalog Management TMF635 - Usage Management TMF637 - Product Inventory Management TMF638 - Service Inventory Management TMF639 - Resource Inventory Management TMF640 - Service Activation and Configuration TMF641 - Service Ordering Management TMF642 - Alarm Management TMF644 - Privacy Management TMF645 - Service Qualification TMF646 - Appointment TMF648 - Quote Management TMF651 - Agreement Management TMF652 - Resource Ordering Management TMF653 - Service Test Management TMF654 - Prepay Balance Management TMF655 - Change Management TMF656 - Service Problem Management TMF657 - Service Quality Management TMF662 - Entity Catalog Management TMF663 - Shopping Cart Management TMF666 - Account Management TMF668 - Partnership Type Management TMF669 - Party Role Management TMF671 - Promotion TMF672 - User Role And Permission TMF673 - Geographic Address Management TMF674 - Geographic Site Management TMF676 - Payment Management TMF678 - Customer Bill Management TMF679 - Product Offering Qualification TMF680 - Recommendation TMF681 - Communication TMF683 - Party Interaction Management TMF687 - Stock Management TMF696 - Risk Management TMF699 - Sales Management TMF704 - Test Case Management TMF705 - Test Environment Management TMF706 - Test Data Management TMF707 - Test Result Management TMF708 - Test Execution Management TMF709 - Test Scenario Management TMF710 - General Test Artefact Management TMF720 - Digital Identity Management TMF915 - AI Management API Component Suite See certified APIs (52)	August 2022	Real World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open APIReal World Open API
Huawei Technologies Co. Ltd	Certification: TMF620 - Product Catalog Management TMF621 - Trouble Ticket TMF622 - Product Ordering TMF629 - Customer Management TMF632 - Party Management TMF633 - Service Catalog Management TMF634 - Resource Catalog Management TMF635 - Usage Management TMF635 - Usage Management TMF637 - Product Inventory Management TMF638 - Service Inventory Management TMF639 - Resource Inventory Management TMF639 - Resource Inventory Management TMF642 - Alarm Management TMF642 – Alarm Management TMF642 – Alarm Management TMF646 - Appointment Management TMF648 - Quote Management TMF651 - Agreement Management TMF654 - Prepay Balance Management TMF655 - Change Management TMF663 - Shopping Cart TMF666 - Account Management TMF667 - Document Management TMF668 - Partnership Management TMF669 - Party Role Management TMF671 - Promotion Management TMF672 - User Role Permission Management TMF673 - Geographic Address Management TMF673 - Geographic Address Management TMF674 - Geographic Site Management TMF676 - Payment Management TMF677 - Consumption Management TMF678 - Customer Bill Management TMF679 - Product Offering Qualification TMF680 - Recommendation Management TMF681 - Communication management TMF683 - Party Interaction Management TMF687 - Stock Management TMF696 - Risk Management TMF699 - Sales Management TMF702 - Resource Activation Management TMF704 - Test Case Management TMF705 - Test Environment Management TMF706 – Test Data Management TMF707 – Test Result Management TMF708 - Test Execution Management TMF709 - Test Scenario Management TMF710 - General Test Artifact Management TMF720 - Digital Identity Management TMF915 - AI Management See certified APIs (51)	September 2023	Open APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIReal World Open APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen APIOpen API

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Why not improve your skills with focused training

TM Forum plays a leading role in educating the industry on innovative new approaches to accelerating digital transformation. As part of that, these 2 dedicated API courses will help you understand how to get the most out of our great library of APIs.

TM Forum Open API Fundamentals course

Available self-paced online or expert-led on-site or virtual classroom.

The fundamentals course introduces the key concepts of Open APIs and provides examples of how they are used in real-world scenarios, how they are structured and how they relate to TM Forum Open Digital Framework so that developers and architects can begin deploying them in their businesses.

TM Forum Open API Practitioners’ course

Training is expert-led and can be completed on-site or via virtual classroom.

The practitioners course provides attendees the opportunity to practice using and extending the TM Forum Open APIs as well as techniques used when implementing the APIs. It will take participants through detailed lab-based exercises to ensure a significant depth of knowledge and practical skills are attained over the course of the program

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

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:

Open API Manifesto

Over 150+ leading companies have publicly committed to developing and using Open APIs by signing the Open API manifesto.

Open API stories

Read why members believe in the Open API program, how they use them and the benefits they bring to their business.

Open API Table

Access the developer portal for TM Forum's 70+ REST-based, Event-based and domain specific Open APIs.

Open API Certification

Open API Conformance certification for suppliers verifies the successful implementation of Open APIs.

Open API Dashboard

The Open API Dashboard provides a monthly update that covers both API engagement and Conformance Certification.

Open API Spec Jam

On June 12th-16th, hosted by Beyond Now and NTT Data in Vienna, Austria, join us for an Open API Spec Jam workshop to work collaboratively on the standardization and "schemafication" of the Open APIs.