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.

Credential Engine Account

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

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


Employment and Earnings and Other CTDL Updates
Posted on 11/22/2019

The work of the Employment and Earnings Task Group concluded in October and was followed up with webinars for all Advisory Groups and other partners. The resultant terms are in pending for release on November 29, 2019. Employment and earnings are aggregated and de-identified quantitative data. To support this type of data, the Credential Transparency Description Language (CTDL) is using a Quantitative Data schema. It is expected that additional terms for describing other types of quantitative data, e.g., program outcomes such as completion rates, will be determined by a new task group in 2020.

In addition to updates to include the employment and earnings terms, a small update to the CTDL and CTDL ASN (Achievement Standards Network) for competency frameworks are also in pending to be released on November 29, 2019. The CTDL and CTDL-ASN release history web pages document the details of these updates.

  1. See the employment and earnings terms that are pending in the new Quantitative Data schema
  2. See the CTDL November release information
  3. See the CTDL-ASN November release information

The CTDL family of specifications is available for anyone to use under and open license. Once these terms are released on November 29, 2019, they’re available for anyone to use. A follow-on webinar is being planned to share additional information to plan for supporting publishing of employment and earnings quantitative data to the Credential Registry.

Please let us know if you have any questions by email

CTDL/CTDL-ASN October 2019 Release Available
Posted on 10/25/2019

CTDL and CTDL-ASN have both been updated for October 2019.

CTDL/CTDL-ASN October 2019 Release is pending
Posted on 10/17/2019

Several updates for CTDL and CTDL-ASN are pending for release on Friday, October 25, 2019.

CTDL Pending Updates CTDL-ASN Pending Updates

A summary of these updates is provided below. To provide feedback and comments, please:

Feedback and comments are due by Friday, October 25, 2019. These updates will go from Pending to Stable on Monday, October 28, 2019.

Change Summary:

  • Issue #620: Added CTID and Subject Webpage to the Pathway class
  • Issue #466: Created a new property and associated vocabulary to indicate types of financial assistance available for the pursuit of a credential
  • Issue #568: Reworked CTDL's handling of pointers from one version of a credential to another
  • Issue #619: Updated several CTDL-ASN properties to indicate their equivalence to their respective IMS Global CASE properties
August 2019 CTDL Release now in Pending
Posted on 8/19/2019

The August 2019 CTDL Release is now in pending!

There are several small updates in this release, but one of them is an important change to note:

The range of ceterms:submissionOf is changing from rdf:langString to xsd:anyURI. To take its place, we are introducing a new property, ceterms:submissionOfDescription. This will align ceterms:submissionOf with other properties in CTDL that come in URI/text pairs.

We welcome feedback, especially during the two-week comment period before the official release on Friday, August 30th, 2019.

To post feedback, please use either the Credential Engine Github or the Credential Engine Google Group.

July 2019 TAG Meeting Followup
Posted on 7/29/2019

Thank you to all who were able to participate with the July 26, 2019 TAG meeting. The first part of this meeting was a combined TAG and Employment and Earnings: CTDL Data Model and Terms Task Group meeting. The second part of the meeting provided more information on consuming data from the Credential Registry as part of a series that is aimed at going deeper into the benefits of consuming data from the Registry.

As a follow up to the meeting, Please review and provide feedback on the Employment and Earnings proposals below by August 15, 2019:

Below is additional information from the July 2019 TAG Meeting;