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Changelog

All notable changes to the Public Prompt License (PPL) project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[0.2.0] - 2025-12-19

Changed

  • Architecture: Shifted to a "Wrapper" approach. PPL v0.2 licenses now incorporate standard licenses (MIT, Apache 2.0, AGPL v3) by reference and extend their scope, rather than rewriting the license text.
  • Definitions:
    • Renamed DEFINITIONS.md to DEFINITIONS-0.1.md for archival.
    • Created DEFINITIONS-0.2.md for the new version.
    • Added explicit definition of "Source Code" to include TypeScript, Python, etc.
  • Scope: PPL-S v0.2 now explicitly includes application source code in its reciprocal obligation, while maintaining the infrastructure exclusion.

[0.1.0] - 2025-12-13

Added

  • Initial Draft Release (Request for Comment)
  • Definitions: Established DEFINITIONS.md to define "Prompt Source" and "Agent Service".
  • Licenses:
    • PPL-M (MIT-style): Permissive, minimal friction.
    • PPL-A (Apache-style): Permissive, with patent grants and attribution.
    • PPL-S (Service-style): Reciprocal for Agent Services, with infrastructure exclusion.
  • Documentation:
    • RATIONALE.md: Gap analysis vs MIT/AGPL/SSPL.
    • HOW-TO-APPLY.md: Usage guide.
    • FAQ.md: Common questions on scope and secrets.
    • COMPATIBILITY.md: License interaction matrix.
  • Templates: Added headers and NOTICE templates.