LICENSE

StemJSON Specification License
==============================

Copyright (c) 2025-2026 Vasyl Krychun. All rights reserved.

Vasyl Krychun is the originator and author of the StemJSON specification
and the inventor of the declarative concepts embodied in it.


1. SPECIFICATION LICENSE

The StemJSON specification documents (all files in the spec/ directory) are
made available under the Open Web Foundation Agreement Version 1.0
("OWFa 1.0"), subject to the additional attribution requirement set out
below in Section 1.5.

You can review the OWFa 1.0 at:
https://www.openwebfoundation.org/the-agreements/the-owf-1-0-agreements-granted-claims/owfa-1-0

Under the OWFa 1.0, the specification author grants any implementer a
royalty-free, worldwide, non-exclusive, non-sublicensable copyright
licence and a royalty-free, worldwide, non-exclusive, non-sublicensable
patent licence (limited to Granted Claims as defined in the OWFa 1.0),
subject to the terms of the OWFa 1.0.

In plain language, this means:

  1.1 You MAY freely implement the StemJSON specification in any programming
      language, on any platform, for any purpose (commercial or non-commercial).

  1.2 You MAY create parsers, validators, renderers, code generators,
      editors, and any other tooling that reads, writes, or processes
      StemJSON.

  1.3 You MUST retain this copyright notice and this licence in any
      redistribution of the specification documents.

  1.4 The implementation rights in this Section 1 are granted under the
      OWFa 1.0. The OWFa 1.0 does not grant any trademark rights; see
      Section 3 and TRADEMARK_POLICY.md.

  1.5 Additional attribution requirement. As an additional condition that
      applies alongside the OWFa 1.0 but does not restrict the core right
      to implement the specification, you MUST include the following
      attribution in a reasonably discoverable location within any product
      or project that implements the StemJSON specification (e.g.,
      documentation, about screen, README, licence file, or third-party
      notices):

          "StemJSON specification created by Vasyl Krychun
           https://stemjson.com"

      If you believe this additional requirement is incompatible with the
      unmodified OWFa 1.0 terms for a particular jurisdiction or use, the
      OWFa 1.0 terms prevail to the extent of that incompatibility, and
      this attribution requirement is deemed severed for that use only.


2. STEMRUNTIMESDK (SEPARATE LICENSE)

The StemRuntimeSDK — the official runtime engine for Apple platforms — is
a separate product governed by its own End-User License Agreement (EULA).
The StemRuntimeSDK is NOT covered by this licence.

The StemRuntimeSDK EULA is published at
https://github.com/vkrychun/stem-runtime-swift/blob/main/LICENSE
(the file named LICENSE in the stem-runtime-swift repository). A
summary is available at https://stemjson.com/stemruntime/license/.


3. TRADEMARKS

Use of the StemJSON™, StemRuntimeSDK™, StemRuntime™, and StemJSON
logo marks is governed by the Trademark Usage Policy
(TRADEMARK_POLICY.md). This licence does not grant any rights to use
these marks except as required for reasonable and customary
descriptive reference to the specification. In particular, you may
not claim that your implementation IS StemJSON, is an "official"
StemJSON product, or is endorsed or certified by the specification
author, except under a separate trademark licence granted in writing.


4. CONTRIBUTIONS

By submitting a pull request or other contribution to this repository,
you grant the specification author a perpetual, irrevocable, worldwide,
royalty-free, non-exclusive, sublicensable (including through multiple
tiers) licence, together with a licence under any patent claims you own
or control that are necessarily infringed by the contribution, to use,
reproduce, modify, prepare derivative works of, distribute, publicly
display, and publicly perform the contribution as part of the StemJSON
specification and related materials, and to sublicense the same to
implementers under the OWFa 1.0 (or any successor open-specification
licence that the specification author adopts for this work).

You represent that the contribution is your own original work, or that
you have the necessary rights to submit it under the terms above, and
that submission of the contribution does not breach any obligation to a
third party.

If the specification author asks you to execute a separate Contributor
License Agreement (including the OWFa 1.0 Contributor License Agreement,
http://www.openwebfoundation.org/legal/the-owf-1-0-agreements/owf-contributor-license-agreement-1-0---copyright-and-patent),
you will do so before your contribution is merged into the normative
specification. Absent that separate CLA, the rights granted in this
Section 4 are the only rights you grant in the contribution.


5. NO WARRANTY

THE SPECIFICATION IS PROVIDED "AS IS" AND "AS AVAILABLE", WITHOUT
WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND
NON-INFRINGEMENT. The specification author does not warrant that the
specification is free of errors, is fit for any particular use, or that
implementing it will not infringe any third-party rights.


6. LIMITATION OF LIABILITY

TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SPECIFICATION AUTHOR SHALL
NOT BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
CONSEQUENTIAL, OR PUNITIVE DAMAGES, OR FOR LOST PROFITS, LOST REVENUE,
LOST DATA, OR BUSINESS INTERRUPTION, ARISING OUT OF OR RELATING TO THIS
LICENCE OR THE USE OF THE SPECIFICATION, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES. Nothing in this Section excludes liability
that cannot be excluded by applicable law, including liability for
fraud, wilful misconduct, or death or personal injury caused by
negligence.


7. GOVERNING LAW

This licence is governed by the laws of Spain, excluding its
conflict-of-laws rules. The OWFa 1.0, where it applies, is governed by
its own terms. If the specification author's place of establishment
changes (for example, on formation of a corporate licensor or on
registration in another jurisdiction), a future version of this licence
may designate a different governing law; any such change will apply only
from its effective date forward and will not affect rights already
granted under this version.


8. SEVERABILITY

If any provision of this licence is held unenforceable by a court or
tribunal of competent jurisdiction, the remaining provisions will
continue in full force and effect, and the unenforceable provision will
be modified to the minimum extent necessary to make it enforceable while
preserving its intent.


9. NON-WAIVER

The specification author's failure to enforce any provision of this
licence, or to act on any particular breach, is not a waiver of any
future right to enforce that provision or to act on any other breach.