ad-adr

name	ad-adr
description	Draft a new ADR (Architecture Decision Record) at doc/adr/NNNN-<short-title>.md, using Michael Nygard's Context/Decision/Consequences/Alternatives pattern. Use when the user wants to record, write, draft, propose, or document an architecture decision. Status starts at proposed; the agent does not flip to accepted without explicit user approval.
summary	Draft a new ADR at `doc/adr/NNNN-<slug>.md`.
allowed-tools	Read, Write, Glob, Bash

/ad-adr

Drafts doc/adr/NNNN-<short-title>.md for one architecture decision. Status lifecycle: proposed → accepted → deprecated | superseded by ADR-NNNN.

Step 1 — Determine NNNN

Run node .claude/skills/ad-adr/scripts/next-number.mjs doc/adr from the consumer root. Use JSON next as NNNN; it preserves archived gaps. If unreadable is non-empty, stop until access is resolved; if exhausted is true, stop for a numbering decision. If loaded elsewhere, substitute the skill base path. The decision scope stays in this step's text.

Step 2 — Confirm scope

The ADR captures one decision. If the user's request implies multiple decisions, ask which one to write first; the others become follow-up ADRs.

Step 3 — Fill from conversation only

Use the template below. Fill Context, Decision, Consequences, and Alternatives Considered from this conversation only — no fabrication, no inferring beyond what the user said. If a section has no signal, ask one question per gap rather than guessing.

• Decision must be a directive ("We will…"), not a description.
• Consequences lists positive and negative; do not balance for the sake of balance.
• Alternatives Considered lists each rejected option with a one-line reason.

Interview UX

When the host exposes AskUserQuestion, use it for multi-choice prompts (Status: proposed / accepted / deprecated / superseded, decider role selection, alternative-option ranking) and for confirmation gates with non-trivial branching. Inline text questions are the fallback only when the host lacks a structured-prompt primitive (Codex). One card per multi-choice gate beats chained text questions.

Step 4 — Write the file

Path: doc/adr/<NNNN>-<short-slug>.md. Slug: kebab-case, ≤6 words, derived from the decision title. Status: proposed. Date: today, ISO format. Deciders: ask the user.

When this decision changes part of an earlier one, declare it in the header. Status: covers whole-document supersession; the partial case — one stanza, one rejected alternative, one decision's realization — is what Amends: and Amended by: are for. Write Amends: ADR-NNNN here, then offer to add the matching Amended by: line to that ADR's header. The pair is the point: either field alone leaves a relation only prose can find, so a reader has to open every record in the directory to learn what still binds. Omit both lines entirely when there is no amendment — an empty field is worse than an absent one.

Stop after writing. Do not flip status to accepted — that requires user review.

Template — doc/adr/NNNN-<slug>.md

The ADR skeleton lives in references/adr-template.md — one decision per ADR; Status starts at proposed.

Output contract

A single new file at doc/adr/<NNNN>-<short-slug>.md. Status proposed. No invented content.

Existing ADRs are otherwise left alone, with one bounded exception: when this ADR declares Amends: ADR-NNNN, offer to add the matching Amended by: line to that ADR's header, and write it only on explicit confirmation. Header line only — the body stays the immutable record, so this records a new relation rather than retconning an old decision. Declining is a valid answer; /ad-drift reports the unpaired relation.

ADRs are decision-record artifacts and are exempt from the no-dates rule (Documentation Discipline §2): the **Status:** lifecycle and **Date:** field are required for Nygard supersession ordering. The remaining Documentation Discipline rules (WORKFLOW.md §2) apply at write time:

• No emoji anywhere in the file.
• Context is the business-context-first section — the forces and problem before the decision.
• One scope: one decision per ADR. If the user's request implies multiple decisions, ask which one to write first; the others become follow-up ADRs.
• No speculation. Decision is a directive ("We will…"); rejected paths go in Alternatives Considered, not the body.

Next

• Continue the work the ADR was scoped to support. Status starts proposed; the user flips to accepted after review (the agent does not).
• If the ADR touches ARCHITECTURE.md's Active ADRs list, add the entry there.
• /ad-task for the work units that implement the decision.
• /ad-drift periodically to confirm the decision still holds against the code.