SED-ML Specification

The SED-ML specification is the official document describing SED-ML and how tools and libraries should implement support for SED-ML.

Latest release: logo L1V4 pdf
Latest draft: The source is available from
Please submit changes via pull requests against the repository.
If you find issues with the specification please report them at

Feature requests and proposals

We would like to encourage you to follow the procedure below for contributing to SED-ML development.

Feature requests

Feature requests are “wishes for support” by SED-ML users. They are submitted and tracked using the feature request tracker. The SED-ML editors will revise these wishes at their regular meetings and start discussion on them sed-ml-discuss if necessary. Solutions to feature requests can be provided (independently of a feature request) by starting a new proposal item.


Proposals are welcome at all times via GitHub issues. Proposals could be derived from a sed-ml-discuss discussion field (for example, in response to a feature request), or created de novo.

  • Together with your proposal you must provide a sufficiently detailed description of your desired feature, including XML examples, i.e. SED-ML files, containing the proposed new elements in Annotation elements. Final element and attribute names may be decided on later (maybe even hierarchy).
  • The editors then collect vote on whether the outlined proposal goes in to the right direction and should become part of SED-ML.
    • The proposal will be voted on by sedml-discuss members,
    • requiring a majority in favour to be accepted. The vote includes yes-no-revise options.
    • There will be no minimum requirement for the the number of votes needed.
    • The voting process will take place over a 3 week period.
  • Proposals that are rejected will not be rejected for all time, but would need to address the reasons for their rejection before resubmission. Resubmission therefore requires revision of the proposal.
  • Accepted proposals will be integrated with the specification document by the SED-ML editors with the next release. Prerequisites are:
    • at least two implementations in applications ( to demonstrate interoperability)
    • updated examples
    • a written description of the proposal
    and ideally would include:
    • an XML schema for the proposed extension
    • UML diagrams illustrating any new class

All specifications

L1V4 (official specification document) pdf

L1V3 (official specification document) pdf

L1V2 (official specification document) pdf

L1V1 (official specification document) pdf

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