architecture-decision-record

Installation
SKILL.md

Architecture Decision Record (ADR) Skill

This skill produces a complete Architecture Decision Record (ADR) following the Nygard format — the most widely adopted standard. ADRs document the reasoning behind significant technical decisions so future team members understand not just what was decided, but why.

Required Inputs

Work from what is given. If any of these is missing, still produce the complete output: fill each gap with a reasonable assumption marked (assumed, confirm) and list those assumptions at the end. Ask a question first only when the core subject itself is missing (there is nothing to write about).

  • ADR number (sequential number in your ADR registry — e.g. 012; or "next available" if unknown)
  • Decision title (brief, e.g. "Use PostgreSQL as primary datastore")
  • Context (what situation led to this decision needing to be made?)
  • Options considered (at least 2; if only 1 is given, prompt for alternatives that were considered or ruled out)
  • Decision made (which option was chosen)
  • Reason for choice
  • Status (Proposed / Accepted / Deprecated / Superseded)
  • Author and date
  • Team context (optional — team size, relevant experience, org constraints; helps calibrate formality and depth of the Context section)

Output Format

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Apr 3, 2026