Writing: read docs/skills/shared/writing-rule.md before you write a durable artifact.

/prototype-close — Close a Prototype via the Disposition Gate

The disposition gate prevents the worst-of-both case: a prototype that "looked great in the demo" but never decides what to do with it, leaving a throwaway mockup that quietly gets promoted into production. Every prototype must close with one of two paths:

• PROMOTE — the direction was chosen; file a fresh [Feature] ticket so the real work goes through the full production SDLC. The prototype artifact is NOT lifted into production — the new feature re-implements based on the chosen direction.
• DISCARD — the direction was rejected (or "not now"); write a memo at docs/prototype-memos/<slug>.md so future-us doesn't re-explore the same ground.

This is the UX/demo sibling of /spike-close (technical exploration). Same gate, same two paths, different artifact directory (docs/prototype-memos/ vs docs/spike-memos/).

Path resolution

Read the registry path via portfolio_registry, the per-project docs dir via portfolio_projects_dir, and the ideas backlog via portfolio_ideas_backlog — all from .claude/hooks/_lib-portfolio-paths.sh. Source the helper at the top of any bash block that touches those paths:

source "$(git rev-parse --show-toplevel)/.claude/hooks/_lib-read-config.sh"
source "$(git rev-parse --show-toplevel)/.claude/hooks/_lib-portfolio-paths.sh"
registry=$(portfolio_registry)

Defaults match today's single-fork layout. See docs/multi-project.md.

Usage

/prototype-close --promote 142
/prototype-close --discard 142
/prototype-close --promote          # uses the active-ticket marker
/prototype-close --discard

Process

1. Resolve the prototype ticket

Two paths:

• If $ARGUMENTS includes a number (e.g. --promote 142 or --discard owner/repo#142), use that.
• Otherwise read the active-ticket marker of the working tree you are in (see /start-ticket "Read the active ticket") and use the ticket recorded there. If no marker resolves, ask:

Which prototype are you closing? Pass --promote <number> or --discard <number>,
or run /start-ticket first.

2. Verify it really is a prototype

Run gh issue view <number> --repo <owner/repo> --json title,labels,state,body. The skill proceeds if:

• title starts with [Prototype], OR
• labels include prototype

If the ticket is neither, refuse:

Issue {owner/repo}#{number} doesn't look like a prototype (no [Prototype]
prefix, no `prototype` label). /prototype-close is for prototype disposition
only — close production-shaped tickets via the normal QA → Done flow, and
technical spikes via /spike-close.

If the ticket is already CLOSED, warn and ask whether to continue (the user may want to retroactively record disposition):

{owner/repo}#{number} is already closed. Continue and (a) file the follow-
up artefact only, or (b) abort? (continue / abort)

3. Branch on --promote vs --discard

3a. PROMOTE — three questions, then file a [Feature]

Ask one at a time:

i) Production-shaped feature title

The prototype chose a direction. What's the title of the production-shaped
feature ticket we're filing as the follow-up?

ii) Production-shaped scope

What's the scope for the production version? This is the user-facing
capability, not the prototype's exploration goal.
(One paragraph or bullets.)

iii) What's NOT being carried over

What did the prototype fake that's NOT being lifted into production? (e.g.
"the mockup used stubbed data; production needs the real API",
"the demo skipped error states and empty states — we'll design those in
the feature".)

Then preview the [Feature] ticket and confirm. The body MUST include a "Prototype findings" section that links back to the prototype:

**[Feature] {title}**

## User Story
{prompted from the operator — same as /feature step 3a}

## Acceptance Criteria
- [ ] {prompted from the operator}

## Prototype findings
This feature was promoted from {owner/repo}#{prototype-number}.
The prototype chose the direction: {one-sentence summary of the look/feel decided}.

What is NOT being carried over from the prototype artifact:
- {item 1}
- {item 2}

## Out of Scope
{or "—"}

After confirmation, create the follow-up feature via the tracker abstraction (tracker_create, #670 / AgDR-0072, extended by the #709 creator sweep) so it lands in this project's tracker. For a GitHub adopter this runs gh issue create exactly as before.

# Resolve the tracker lib (it lives in the ops fork's hooks dir) by walking up
# from the cwd; source it.
tracker_lib="$(r="$PWD"; while [ -n "$r" ] && [ "$r" != / ]; do \
  [ -f "$r/.claude/hooks/_lib-tracker.sh" ] && { echo "$r/.claude/hooks/_lib-tracker.sh"; break; }; \
  r="${r%/*}"; done)"
# shellcheck source=/dev/null
. "$tracker_lib"

body_file="$(mktemp)"
cat > "$body_file" <<'BODY'
{body}
BODY

# tracker_create <owner/repo> <title> <body_file> [<labels_csv>] → {"ref","url"}.
result="$(tracker_create "{owner/repo}" "[Feature] {title}" "$body_file" "enhancement")"
rc=$?
rm -f "$body_file"
if [ "$rc" -eq 3 ]; then
  echo "Tracker is 'none' (shape-only) — nothing was created in a tracker." >&2
  printf '%s\n' "$result"
  exit 0
elif [ "$rc" -ne 0 ] || [ -z "$result" ]; then
  echo "Follow-up creation failed — check the tracker CLI / auth. Nothing was created." >&2
  exit 1
fi

ref="$(printf '%s' "$result" | jq -r '.ref')"   # the new feature's reference
url="$(printf '%s' "$result" | jq -r '.url')"

Then close the prototype with a cross-ref comment. (Closing stays on gh here — issue state transitions are out of scope for the #709 creation sweep; a tracker-agnostic close/state primitive is separate follow-up work. On a non-GitHub project, close the prototype manually.)

gh issue close {prototype-number} --repo {owner/repo} \
  --comment "Prototype disposition: PROMOTE. Follow-up filed as #${ref} — {feature-title}. Prototype artifact is NOT being lifted into production; the new feature work re-implements the chosen direction recorded above."

Return both URLs:

Prototype closed: {owner/repo}#{prototype-number}
Follow-up:        {owner/repo}#${ref} — {feature-title}
                  ${url}

3b. DISCARD — one question, then write a memo

What did we learn? One paragraph — enough that a future engineer who
asks the same UX/demo question (or revisits the same flow) finds this memo
and doesn't re-explore the same ground. Be concrete:
  - what direction were we exploring?
  - what did the prototype show?
  - why is the answer no / not this direction? (or "not now")
  - what would change the answer? (under what conditions might we revisit?)

Then derive a slug from the prototype title (lowercase, kebab-case, max 40 chars, stopwords trimmed) and write the memo:

mkdir -p docs/prototype-memos
cat > docs/prototype-memos/{slug}.md <<'EOF'
# Prototype memo: {title}

> **Disposition: DISCARD** — direction rejected; not pursuing further.

- **Prototype ticket**: {owner/repo}#{number}
- **Author**: {git config user.name}
- **Closed**: {ISO-8601 date}

## Direction Question (from the prototype ticket)

{direction question from the original ticket body}

## Findings

{the one-paragraph answer the operator wrote}

## Why we're not pursuing

{extracted from the operator's answer — the "answer is no / not this
direction" part}

## What would change the answer

{conditions under which we might revisit — extracted from the operator's
answer, or "—" if not specified}

## Artefacts

- Original prototype ticket: {owner/repo}#{number}
- Prototype branch: prototype/<TICKET-ID>-<slug> (delete after merge of this memo)
EOF

The memo is committed in a separate PR (the prototype's PR may or may not have merged — the memo PR is the disposition artefact, separate from any code).

After writing the memo, close the prototype with a cross-ref:

gh issue close {prototype-number} --repo {owner/repo} \
  --comment "Prototype disposition: DISCARD. Memo at docs/prototype-memos/{slug}.md (commit in follow-up PR). Prototype branch can be deleted; nothing is being lifted into production."

Return:

Prototype closed: {owner/repo}#{prototype-number}
Memo path:        docs/prototype-memos/{slug}.md

Next steps:
  1. Stage the memo:   git add docs/prototype-memos/{slug}.md
  2. Commit:           git commit -m "docs: prototype memo for #{prototype-number}"
  3. Push + PR — the memo is the disposition artefact.
  4. Delete the prototype branch once the memo PR merges.

Rules

1. Disposition is PROMOTE or DISCARD only. No third path. The whole point of the gate is to forbid "decide later".
2. PROMOTE files a fresh [Feature]. The prototype artifact is NOT lifted into production. Promotion creates a new ticket; the production work re-implements the chosen direction.
3. DISCARD writes a memo. Prototype-memo at docs/prototype-memos/<slug>.md is the artefact — no memo, no DISCARD.
4. One question at a time. Same conversational rule as /prototype, /spike-close, and /feature.
5. No hard block on closing without /prototype-close. The skill prompts; closure is ultimately the operator's call. The cost of forgetting is no record of what was learned, which is enough downside to motivate running the gate without needing a mechanical block.
6. Cross-references both ways. PROMOTE links the new feature back to the prototype; DISCARD links the memo back to the prototype. Future archaeology should always find the trail.

Edge cases

• Prototype PR didn't merge. Fine — the memo / follow-up feature is the disposition artefact, not the prototype code itself. PROMOTE: file the new feature, close the prototype, abandon the branch. DISCARD: write the memo, close the prototype, abandon the branch.
• Direction was partially chosen. Treat the partial as PROMOTE — file the [Feature] for the parts you're keeping; cover the parts you're dropping in the "What is NOT being carried over" section.
• A prototype that turned into a feasibility question. If the exploration revealed the real open question is technical ("will this even work?"), file a /spike for that, and DISCARD the prototype with a memo pointing at the new spike.

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Part of ApexYard — multi-project SDLC framework for Claude Code · MIT.