Guide and template for authoring and maintaining Architecture Decision Records (ADRs). Captures structural decisions, background context, trade-offs, and compliance verification in lightweight, immutable markdown records to preserve engineering context. Activate when making significant architectural choices, documenting technical trade-offs, proposing major refactorings, or authoring ADRs.
Compliance and licensing guide for Google Open Source repositories and personal open-source projects published by Googlers. Enforces source file license headers (such as Apache-2.0) using addlicense, verifies license files, inserts required non-official product disclaimers, and audits pre-release compliance. Activate when preparing Google Open Source or Googler personal projects for release, applying copyright headers, or adding required disclaimers.
Collaborative design proposal framework and template for Request for Comments (RFC) documents. Structures technical design proposals, explores alternative solutions, documents spikes and open questions, and tracks proposal lifecycle states before formalizing decisions into ADRs. Activate when proposing major features, exploring technical solutions under uncertainty, drafting design documents, or gathering engineering consensus.