Helping FOSS projects be more successful through clearly defined project data.


ClearlyDefined, defined.


Help FOSS projects be more successful through clearly defined project data.


  • Neutral – The project carries no affiliation or company driven focus
  • Open – The data, infrastructure, and processes are open to all
  • Factual – All data is factual. No interpretation or assessment is made
  • Upstream – Enable upstream projects as much as possible
  • Simple – Wherever possible the project will use the simple solution


ClearlyDefined will pursue any data that makes FOSS projects easier to consume and thus more successful. Initially this work will focus on licensing data that form the core of understanding and meeting the legal obligations related to using FOSS. This includes:

  • License (declared and observed)
  • Copyright holders
  • Source location (including revision/commit)


The FOSS licensing and security information landscape is vast and varied. Projects without clear metadata are harder to adopt and so get fewer contributions and lower engagement – they enjoy less success. On the consumer side, enormous effort is required to discover, comply with licensing obligations, and track security issues. Even simple things like the location of the source for a component can be painful to find.

These ambiguities mean that FOSS cannot be consumed with confidence. This affects the success of FOSS projects. We want to break this vicious cycle.


Crowdsourcing the curation of licensing, security, accessibility data for FOSS projects. First clear licensing data. Later, clear security, accessibility data.


Harvesting data embedded in projects, curating the data in an open and collaborative process, contributing clearly defined project data back to the FOSS projects, and making the data freely and easily accessible. A virtuous cycle.

Future efforts will focus on further topics such as:

  • Security – facilitating the reporting and tracking of vulnerabilities in projects
  • Accessibility – Characteristics and analysis of a project’s support of accessibility related technology and concerns
  • Project data – Governance model, principals, issue tracking, discussion forums, …

The ordering of this work and effort applied will depend entirely on the community and their interests.

ClearlyDefined, governed.


The continuing goal of ClearlyDefined is to help originating projects craft and maintain clarity around their in-scope data as a native part of their operation. Where that is not possible, the project will maintain the relevant data. This is viewed as a fork of the upstream project and, like code forks, should be minimized. Either way, the project serves as a one-stop-shop for the in-scope data making life easy for consumers.

The project undertakes four main operations in support of the stated goals and scope. Those processes are listed here in rough execution order:


Harvesting is the act getting data from upstream projects. This may be as simple as reading prescribed data from canonical locations to full-on analysis of the source code using a variety of open tools. The discovered data is stored in its entirety in its native form in ClearlyDefined infrastructure and made available to the community on demand. The harvesting tools themselves are always fully open and accessible to the community for vetting and inspection. The project is open to including new tools subject to a vote, as described below.

Harvesting may be run by the ClearlyDefined project itself or by designated parties, typically curators. In all cases, only output from agreed to tools and configurations will be admitted to the system. Harvesting operators are free to focus on a given domain of projects that best suit their expertise and interests.


The curation process is fundamentally open and transparent. Curators (aka project committers or maintainers) work on harvested data, data contributed by the ClearlyDefined community, and with the origin project artifacts and community to validate presented information. All deliberations, discoveries and discussions are recorded and made available for community inspection.

Initially this workflow will happen in one or more GitHub repositories using standard Pull Request workflows on human-readable and diff-able curation artifacts. The project may develop additional tools to supplement or supplant this flow but will always ensure full transparency.

As with committers on typical FOSS projects, curators are free/expected to focus on particular domains that fit their interests and expertise.

At least initially, all curated data must be signed off by two curators. This is more in the interest of working through thought and mechanical processes and developing a common understanding of the data and determining what is admissible. This requirement may be removed through a vote, as described below.


Having curated data about a project, ClearlyDefined community members will seek to contribute the data upstream in a form most attractive to the receiving project. Given the anticipated scale of this effort, some automation will be used but with a sensitivity to spamming projects with pull requests. These contributions will include information supporting the inclusion and ongoing maintenance of the curated data.

Projects accepting the curated contribution will be deemed ClearlyDefined (see Badging below) and will no longer need curation. Validations will continue but by opting into this program, the projects are endeavoring to effectively self-curate the data.


Regardless of whether projects are self-curating or externally curated by ClearlyDefined, as a service to the consuming community, the ClearlyDefined project serves up the harvested and curated data both through programmatic (e.g., REST) APIs and through browsable web properties. The raw harvested data as well as the summarized and curated is made available through both access methods.



A data curator is akin to a project maintainer or committer in typical open source projects. Curators have write permissions to the curation repo(s) and are ultimately responsible for admitting data to the curated store. A curator is more librarian and data scientist than lawyer or developer. The role requires enough domain context to enable issue identification and resolution. The role also requires technical expertise in running the various tools used to detect and analyze components. Each curator must be, and be seen to be, vendor neutral and unbiased. This helps them in their other key role – working with upstream projects to incorporate the curated data into the original project.

As with committers and maintainers, curators are nominated and approved by the project community based on their merits and prior contributions. The role of curator relates to an individual, not an organization or a position in an organization. Under no circumstances is a Curator held responsible for any errors or other flaws in the data merged into the service.

Data Contributor

A ClearlyDefined data contributor is like a contributor on any other open source project – they identify bugs or improvements, fork the repo and contribute a pull request with their changes. For data contributors this could be a small change (e.g., spelling correction), a substantive change (e.g., identifying the license for a component), or wholesale data definition (e.g., providing data for a previously unknown component). Contributors should, as with any other project, expect to substantiate the changes with background information and proof of correctness.

A serial contributor of quality data is a candidate to become a curator.


A ClearlyDefined data consumer accesses the curated or harvested data. They understand that the data is provided as-is with no guarantees or warranties as to the correctness of the data or is suitability for any particular purpose. All data is fully qualified as to its origin and any clarifications made and it is up to the consumer to use the data, or not.

Code Committer/Maintainer

While ClearlyDefined is focused on data, the project will develop a modest amount of code. Code committership is independent of data committership. As such, code committers are elected by a vote of the existing code committer community as described below. Code committers have complete control over and responsibility for the operation of the harvesting, curation and serving infrastructure of the project.

Removal from role

In the unlikely event that a committer or curator becomes disruptive or falls inactive for an extended period of time, they may be removed from the role though a unanimous vote of the remaining set of committers or curators.


Most decisions within the project can be done through informal consensus and recorded in the appropriate public record. When a formal decision is required, for example, when electing committers/curators, a vote is held using the following process:

  • A topic for voting is tabled by a curator by notifying all other curators.
  • Once tabled, curators may vote during an open voting period lasting no less than one working week. Voting will occur on an agreed to, mutually convenient, and open medium (e.g., email, GitHub issue, etc.)
  • A minimum of two positive (+1) votes and no negative (-1) votes carries the topic. Note that negative votes must be substantiated.
  • Abstention (0) votes do not affect the outcome.

Recognition and promotion

The project may, from time to time, run programs that recognize and reward the efforts of a project to become and remain ClearlyDefined. For example, a badging program would enable eligible projects to show they are ClearlyDefined, thus increasing consumer confidence. Such recognitions may be made relative to a specific domain such as licensing or security, or in relation to the overall ClearlyDefined effort.

This project is maintained by clearlydefined

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