Credential Engine Technical Site

Technical Advisory Group

The Technical Advisory Group (TAG) promotes collaboration across, and harmonization of, standardization initiatives that are developing data models, vocabularies, and schemas for credentials and competency frameworks, and related competency information such as criticality ratings and assessment data typically captured with a wide variety of systems.

The goal is to identify, document and openly share solutions that support comparability of credentials and competencies across industries/sectors, human resource systems, education, and government systems.

The Application Work Group (AWG) is a standing subgroup of the TAG and supports members who are using Credential Engine data to design and/or develop applications. Credential Engine will provide technical team support, and online tools (e.g., GitHub repository, Slack Channel, Google Docs) and host meetings to bring members together to foster support. Anyone interested in sharing technical challenges and solutions is welcome to join the Applications Work Group.


Developers are able to leverage the the Credential Registry API to build applications that can read or publish as much or as little information about credentials as they need to.

The Credential Engine project's developers are using Dublin Core Application Profiles process to create systems that communicate all virtually all aspects of credentials.

Use the CTDL Schemas

The Credential Transparency Description Language (CTDL) is available to use with data design, with interoperable learner/worker records, and for publishing information as linked data.

Explore the CTDL Handbook, Terms, Serializations, ILWR Guide, and other resources for using CTDL on this site.

Publishing Options

Credential Engine offers the following options for publishing to the Credential Registry:

  • Registry Assistant Publishing API
  • Manual Entry
  • Bulk Upload

For more information on setting up your account and getting started with any of the publishing methods, click here.

Search Options

Credential Engine offers a robust search API to enable developers to leverage the wealth of data contained in the registry, using the CTDL and CTDL-ASN schemas.

Credential Engine offers a way for non-technical participants to enable a credential search on their own website. The Credential Finder Widget can be customized to match your site's theme and your preferences for automatic filtering, so that the results it shows can be more closely tailored to your site's purposes.

Join Credential Engine

Visit the Credential Engine website to:

  1. Learn more about Credential Engine
  2. Subscribe to updates
  3. Become a participant or partner

Get started with Credential Engine today by:

  1. Create or Login to your Credential Engine account
  2. Get your organization approved to publish and/or consume
  3. Learn more about CTDL, the Registry, and the publishing and consuming APIs


Join new Credential Engine Task Groups
Posted on 6/30/2020

Credential Engine follows a process to make significant updates to develop the Credential Transparency Description Language (CTDL). This process includes subject matter and technical experts forming task groups to provide valuable input. You are invited to join one or both new task groups for Transfer Value or Education and Training to Jobs. These groups are open to anyone interested in contributing their subject matter expertise on these topics. You do not need to have technical experience with the CTDL to participate.

Each group will hold 3-5 separate meetings online and use Google Docs and Groups between meetings to provide input. Additional meetings may be added if the task groups determine them needed. The meetings will begin in July and conclude in September. Once you join a group, you'll receive an email concerning meeting dates.

The task groups are to develop the CTDL terms for:

  • Transfer Value
    • Now more than ever, people need to combine education and training from multiple sources in order to continuously re-skill and upskill in rapidly changing careers. Unfortunately, most people do not get the full benefit of transferring their learning achievements to apply to further education and career advancement.
    • This group will help develop the CTDL Transfer Value Profile terms that can be used by all types of organizations to signal value across all types of learning programs and credentials. The group needs participants to provide transfer value use cases and recommendations for how CTDL can support valuable transfer value “currency.” The group will provide required community review, validation, and feedback before making this new profile a permanent part of CTDL.
    • Learn more and join this group
  • Education & Training-to-Jobs
    • With our rapidly changing economy, it’s critical to address the need to improve linking of education & training to jobs.
    • This group will help develop the CTDL job terms to be used to show the connections between education and training to credentials to jobs. Currently the CTDL can provide rich descriptions of connections to occupation classifications such as O*NET, but as our ever-changing economy has proven, we must also have explicit connections to jobs. This is not intended to describe resumes or Human Resource system content, but it will enable linking skills, competencies, credentials, learning opportunities, assessments and other opportunities to jobs. This means that credentialing organizations can better show connections to jobs and employers can better signal the credentials, skills, and competencies for jobs both in the Registry and on the Web.
    • Learn more and join this group

Please share this information with colleagues who may be interested in joining, and let us know if you have any questions via

NSF Convergence Accelerator Expo: Get registered and express your interest in Credential Engine’s B7118 proposal
Posted on 6/25/2020

After more than a year of planning and preparation, We'd like to invite you to register for the National Science Foundation's Track B Convergence Accelerator Expo to occur on July 1 from 2:30pm - 6:00pm ET and July 2 from 10:00am - 2:30pm ET. With 41 team "booths" for interactive discussion and short video overviews there will be a lot of exciting ideas coming together around the future of work, human-technology interfaces, artificial intelligence, big data, public-private partnerships, and more.

A key output of the expo will be securing "Expressions of Interest" for specific Phase 2 proposals and this is where your advocacy is urgently needed. Credential Engine, Indiana Commission for Higher Education, Midwestern Higher Education Compact, and Lumina Foundation need your support for an ambitious Team B7118 phase 2 proposal entitled "Midwest Compact for a Connected Learn-and-Work Ecosystem" (for a preview, watch this 4 minute video). In short, we take a regional approach to scaling up linked open data about credentials by building a community of practice amongst state agencies, credential providers, edtech providers, national organizations, and more. We need you to register for the expo, come to team B7118’s booth to learn more, and fill out an expression of interest for our proposal. Please share this information with your colleagues and we look forward to discussing our proposal with you and hundreds of attendees.

Register Here

Thank you for participating in Credential Engine's Interoperable Learner/Worker Record Webinar
Posted on 6/19/2020

We held this webinar on June 16th and 18th. If you couldn't join, you can use the links below to watch the webinar and use all of the resources that were shared.

For more information:

New Credential Engine Resources
Posted on 6/10/2020

We are excited to share two new resources with you today.

First, as attention and interest in Interoperable Learner/Worker Records continues to grow, Credential Engine is pleased to release its new GUIDANCE: Introduction to Using CTDL Schemas and the Credential Registry to Support Interoperable Learner/Worker Records (ILWRs) broadly. We’ve also prepared a two-page overview on this topic.

Credential and competency transparency enriches digital credentials, Interoperable Learning Records (ILRs), and Comprehensive Learner Records (CLRs) and helps people have deeper and richer information embedded in their learning records.

There is growing attention at the state, federal and institutional levels in ensuring these learning records use open schema and include linked open data (LOD). As you work towards this goal, now is the time to utilize the Credential Transparency Description Language (CTDL) to represent credentials, competencies, and other learning achievements, so that learning records are relevant, comparable, and machine actionable.

We also invite you to sign up for one of our upcoming webinars on CTDL and ILWRs.

Webinar title: Using the Credential Transparency Description Language (CTDL) for Meaningful, Relevant, Interoperable Learning Records (ILRs)

If you have any questions, we’re happy to set up a time to talk in more detail.

Second, we wanted to draw your attention to our work with the U.S. Department of Labor and share with you the news that O*NET and its detailed occupational frameworks and job skills listings are available as linked open data in the Credential Registry through the use of CTDL-ASN. This blog by Deb Everhart provides details and examples of how having O*NET available in the Registry can further enrich pathway descriptions from credentials and competencies to occupations and job skills.

Thanks, and as always, let us know if you have questions.

New CTDL Term: Certificate of Completion
Posted on 6/3/2020

Thank you to all who responded to the request to review and provide feedback on a new Credential Transparency Description Language (CTDL) term for the Credential type, Certificate of Completion. All feedback was gathered, reviewed, and considered for this terms definition and comment. Some of the feedback referred to attributes of a credential such as whether or not the credential is for credit or non-credit or its quality. The CTDL provides numerous terms for describing attributes of credentials such as credit and non-credit and quality. The terms for further describing credentials are available to the new Certificate of Completion subclass.

  • See the Certificate of Completion credential term, definition, comment and the many other terms that can be used to describe this type of credential here.
  • You can also see the definition for Certificate of Completion along with all other types of credentials currently included with the CTDL here.

Any partners publishing to the Credential Registry can now publish Certificates of Completion via any of the publishing options:

  1. Registry Publishing Assistant API,
  2. Bulk upload (via CSV files)
  3. Manual entry.

If you’re interested in publishing but haven’t set up a Credential Engine Account, click here. Setting up an account and publishing with these options is free to credentialing organizations and their designated 3rd-party publishers. All information published to the Registry must meet the Minimum Data Policy.

Please let us know if you have any questions by emailing