explore-feature

name	explore-feature
description	Identify high-value next features using architecture artifacts, code signals, and active OpenSpec context
category	Git Workflow
tags	["openspec","discovery","architecture","prioritization","parallel"]
triggers	["explore feature","what should we build next","identify next feature","feature discovery","linear explore feature","parallel explore feature","parallel explore","explore parallel feature"]

Explore Feature

Analyze the current codebase and workflow state to recommend what to build next.

Arguments

$ARGUMENTS - Optional focus area (for example: "performance", "refactoring", "cost", "usability", "security")

OpenSpec Execution Preference

Use OpenSpec-generated runtime assets first, then CLI fallback:

• Claude: .claude/commands/opsx/*.md or .claude/skills/openspec-*/SKILL.md
• Codex: .codex/skills/openspec-*/SKILL.md
• Gemini: .gemini/commands/opsx/*.toml or .gemini/skills/openspec-*/SKILL.md
• Fallback: direct openspec CLI commands

Coordinator Integration (Optional)

Use docs/coordination-detection-template.md as the shared detection preamble.

• Detect transport and capability flags at skill start
• Execute hooks only when the matching CAN_* flag is true
• If coordinator is unavailable, continue with standalone behavior

Local CLI Mutation Boundary

Read-only exploration may run from the shared checkout when it only returns a recommendation in chat. Artifact-producing exploration MUST use a managed worktree in local CLI execution before any write, including refreshing architecture artifacts, writing docs/feature-discovery/opportunities.json, creating OpenSpec changes, updating docs, seeding coordinator issues, or changing issue state.

For artifact-producing mode, run this before the first write:

CHANGE_ID="explore-<short-focus-slug>"
eval "$(python3 "<skill-base-dir>/../worktree/scripts/worktree.py" setup "$CHANGE_ID")"
cd "$WORKTREE_PATH"
skills/.venv/bin/python skills/shared/checkout_policy.py require-mutation

All artifact-producing steps below happen inside that worktree and are committed to the resolved branch. The shared checkout remains read-only.

Steps

0. Detect Coordinator and Recall Memory

At skill start, run the coordination detection preamble and set:

• COORDINATOR_AVAILABLE
• COORDINATION_TRANSPORT (mcp|http|none)
• CAN_LOCK, CAN_QUEUE_WORK, CAN_HANDOFF, CAN_MEMORY, CAN_GUARDRAILS

If CAN_MEMORY=true, recall relevant history before analysis:

• MCP path: call recall with tags like ["feature-discovery", "<focus-area>"]
• HTTP path: use "<skill-base-dir>/../coordination-bridge/scripts/coordination_bridge.py" try_recall(...)

On recall failure/unavailability, continue normally and log informationally.

0.5. Focus Area Interview (vague input only)

If $ARGUMENTS is missing, single-word, or matches one of the known broad buckets (performance, refactoring, cost, usability, security, quality, speed, reliability, tech-debt), ask 2-4 short questions to localize the pain before running architectural analysis. A scored opportunity ranking is only useful if the scoring criteria match the user's actual itch.

RAW="$(echo "$ARGUMENTS" | xargs)"
WORD_COUNT=$(echo "$RAW" | wc -w | tr -d ' ')
BROAD_BUCKETS="performance refactoring cost usability security quality speed reliability tech-debt"

NEEDS_INTERVIEW=false
if [[ -z "$RAW" ]] || [[ "$WORD_COUNT" -le 1 ]]; then
  NEEDS_INTERVIEW=true
elif echo " $BROAD_BUCKETS " | grep -qw "$RAW"; then
  NEEDS_INTERVIEW=true
fi

If NEEDS_INTERVIEW=true, ask 2-4 questions in a single batch via AskUserQuestion. No confidence loop, no follow-ups -- this is a lightweight localization, not a full discovery interview (see plan-feature Step 3b.ii for that pattern).

Question template (pick the 2-4 most relevant, parameterized by the bucket):

Bucket	Question 1 (localize "what")	Question 2 (localize "why now")
performance	"Whose performance? Build time / runtime latency / perceived UX / agent throughput / cost per run"	"What recent moment made you reach for this -- a slow build, a user complaint, a bill?"
refactoring	"Which axis of debt? Coupling / duplication / unclear naming / dead code / outdated patterns"	"Is there a feature you're avoiding because the surrounding code scares you?"
cost	"Which cost? LLM API spend / infra / engineering time / agent retries"	"What budget signal triggered this -- a bill, a forecast, a failed audit?"
usability	"Whose usability? End user / operator / developer / agent"	"Where do people get stuck -- onboarding, daily flow, edge cases, recovery from errors?"
security	"Which surface? Authn / authz / secrets handling / supply chain / data exfiltration"	"Is this driven by an audit, a recent incident, or proactive hardening?"
reliability	"Which failure mode? Crashes / data loss / silent corruption / cascading failures / flaky tests"	"What broke recently, or what are you afraid will break?"
tech-debt / quality	"Which symptom hurts most? Test gaps / fragile interfaces / spec drift / undocumented decisions"	"Which area of the codebase do you avoid editing, and why?"
speed	"Whose speed? Build / test / deploy / agent execution / human iteration"	"What slowness most often blocks you mid-task?"

Optional Question 3-4 (open-ended, pick if ambiguity remains):

• "Is there a specific file, module, or workflow you had in mind when you typed <bucket>?"
• "Are there approaches you've already tried or rejected for this?"

Capture the answers as LOCALIZED_FOCUS -- a short string (e.g., "runtime latency in agent dispatch loop, triggered by 8s p95 in last week's traces") used in Step 3 scoring and Step 5 artifact persistence.

If NEEDS_INTERVIEW=false, skip this step entirely and set LOCALIZED_FOCUS="$ARGUMENTS".

0.75. Enter Worktree for Artifact-Producing Mode

Skip this step only when this invocation is strictly read-only and returns results in chat. If any later step will write files or refresh generated artifacts, enter the worktree and run checkout_policy.py as described in the Local CLI Mutation Boundary section.

1. Gather Current State

openspec list --specs
openspec list

Collect:

• Existing capabilities and requirement density
• Active changes already in progress
• Gaps between specs and current priorities

2. Analyze Architecture and Code Signals

test -f docs/architecture-analysis/architecture.summary.json || make architecture

Use:

• docs/architecture-analysis/architecture.summary.json
• docs/architecture-analysis/architecture.diagnostics.json (if present)
• docs/architecture-analysis/parallel_zones.json

Look for:

• Structural bottlenecks and high-impact nodes
• Refactoring opportunities and coupling hotspots
• Code smell clusters and maintainability risks
• Usability gaps, reliability risks, performance/cost hotspots

2.5. Analyze Gen-Eval Signals (if available)

Check for recent gen-eval reports. These provide empirical evidence of interface reliability and coverage gaps:

# Look for gen-eval reports in the project
# Use -newer filter only if opportunities.json exists; otherwise find any report
if [ -f docs/feature-discovery/opportunities.json ]; then
  GENEVAL_REPORT=$(find . -name "gen-eval-report.json" -type f -newer docs/feature-discovery/opportunities.json 2>/dev/null | head -1)
else
  GENEVAL_REPORT=$(find . -name "gen-eval-report.json" -type f 2>/dev/null | sort -t/ -k1 | head -1)
fi

If a report exists, extract:

• Failing interfaces: Endpoints/tools with fail or error verdicts — these represent concrete bugs or regressions that could become fix opportunities
• Coverage gaps: Interfaces in the descriptor with 0% scenario coverage — these are untested and risky
• Category pass rates: Categories with pass rates below 95% indicate areas needing attention
• Cross-interface inconsistencies: Scenarios where the same operation produces different results across transports (HTTP vs MCP vs CLI)

Incorporate these signals into opportunity ranking:

• A failing interface that matches an existing opportunity increases its impact score
• A coverage gap with no existing opportunity creates a new add- opportunity with quick-win bucket (writing scenarios is low effort)
• Cross-interface inconsistencies suggest fix- opportunities targeting the inconsistent service layer

If no report exists, skip this step and note "No gen-eval data available" in the output.

2.6. Archive Intelligence Signals

Check for an archive-intelligence index that provides exemplars and patterns from completed changes:

ARCHIVE_INDEX="docs/factory-intelligence/archive-index.json"
EXEMPLAR_REGISTRY="docs/factory-intelligence/exemplars.json"

If the archive index exists, use it to:

• Identify recurring patterns: Changes that share capability areas with opportunities suggest proven implementation approaches
• Reference exemplars: Link opportunities to similar past changes for estimation calibration
• Detect coverage gaps: Capabilities with archived changes but no exemplars may need better test coverage
• Seed scenario suggestions: Archived scenario seeds relevant to an opportunity's capability area

Include archive signals in the opportunity output when relevant. If neither file exists, skip and note "No archive intelligence available."

2.7. Reframe and Diversify Before Generating Candidates

Before producing the ranked list, run two short discipline steps. They widen the solution space so the ranking is not a vote among lookalikes.

"How Might We" Reframing

Take any concrete pain point surfaced in Steps 1-2.6 (slow build, fragile interface, missing test coverage, etc.) and reframe it as "How might we ____?" — a question, not a solution.

Why: a pain like "the dispatch loop is slow" implicitly suggests "make the dispatch loop faster" — which narrows you to one branch of solutions. Reframing as "How might we deliver work to agents without polling?" widens the space to include pg_notify, websockets, push-based queues, batched dispatch, etc.

For each candidate pain you surfaced, write at least one HMW reframe before brainstorming candidates. Capture the HMW question alongside the candidate in opportunities.json under a new hmw_reframe field — this makes the reasoning auditable and lets the next agent see why the candidate was even considered.

8 Ideation Lenses

When generating candidates, deliberately apply each of the lenses below at least once. Don't stop at the first lens that returns a hit — diversity beats local-maxima fixation.

1. Inversion — what if we did the opposite? (Instead of "make X faster", "remove X entirely".)
2. Constraint removal — what becomes possible if X were free, instant, or unlimited? (e.g., infinite test budget → property tests for every interface.)
3. Audience shift — who else would want this, and how does it change? (Internal devs vs. external integrators vs. end users vs. agents.)
4. Combination — what if we combined two existing capabilities into one new one? (e.g., gen-eval + archive-intelligence → exemplar-driven scenario seeding.)
5. Simplification — what's the smallest version of this that still helps? (Ship the 20% that captures 80% of value.)
6. 10× — what would it take to make this 10× better instead of 10% better? Forces architectural thinking, not parameter tuning.
7. Expert — how would approach it? (e.g., "How would Hyrum Wright approach this refactor at scale?")
8. Adjacent — what's a 1-step-away problem we could solve in passing while we're already in this code?

In opportunities.json, tag each candidate with the lens(es) that surfaced it (lenses_applied: ["inversion", "10x"]). Candidates surfaced by 2+ lenses are stronger signals than candidates surfaced by one.

NOT DOING list

Every candidate report MUST include a top-level NOT DOING: section listing the most-tempting alternatives that were considered and rejected, each with a one-line rationale.

NOT DOING:
- Rewrite dispatch in Rust — too costly for the latency win available; revisit if profiling shows CPU-bound bottleneck.
- Add a second cache layer — overlaps with planned `cache-unification` change; would create competing surfaces.
- Defer to next quarter — error budget is already burning; deferring compounds the cost.

Why this matters: an explore report that lists only what we will do hides the alternatives the team rejected. Future agents (and the operator) cannot evaluate the recommendation without seeing the rejected branches. The NOT DOING: list is the antidote to confirmation bias.

This section is required: opportunities.json MUST have a not_doing array (parallel to the ranked list) with { "alternative": "...", "rationale": "..." } entries. The skill's invariant test asserts this section is present in the SKILL.md and the JSON output.

3. Produce Ranked Opportunities

Generate a ranked shortlist (3-7 items), each with:

• Problem statement
• User/developer impact
• Estimated effort (S/M/L)
• Risk level (low/med/high)
• Strategic fit (low/med/high)
• Weighted score using a reproducible formula:
  • score = impact*0.4 + strategic_fit*0.25 + (4-effort)*0.2 + (4-risk)*0.15 + focus_match*0.1
  • Use numeric mapping: low=1, med=2, high=3; S=1, M=2, L=3
  • focus_match (0-3): how directly the opportunity addresses LOCALIZED_FOCUS (set either by Step 0.5's interview answers or by the direct $ARGUMENTS string when the interview was skipped). 3 = directly addresses the named pain (e.g., focus is "runtime latency in agent dispatch" and opportunity reduces dispatch latency); 2 = addresses the broader bucket but not the specific pain; 1 = tangentially related; 0 = unrelated. Only set focus_match=0 for all items when LOCALIZED_FOCUS is empty/unset — a non-empty focus from $ARGUMENTS is just as valid a scoring anchor as one from the interview.
• localized_focus_alignment: one-line note on why the opportunity received its focus_match score (e.g., "Reduces dispatch loop p95 by replacing polling with pg_notify -- direct hit on stated pain")
• Category bucket:
  • quick-win (high score, low effort/risk)
  • big-bet (high potential impact with medium/high effort)
• Suggested OpenSpec change-id prefix (add-, update-, refactor-, remove-)
• blocked-by dependencies (existing change-ids, missing infra, unresolved design decisions)
• Recommended next action (/plan-feature now, or defer)

3.5. Enumerate Active Resource Claims [coordinated only]

Coordinator-dependent step (requires CAN_DISCOVER and CAN_LOCK). Skip if coordinator is unavailable.

• Call check_locks() to get all active file and logical locks
• Call discover_agents() to enumerate in-flight features and their claimed resources
• Build a resource occupation map: which files, API endpoints, DB schemas, and events are currently claimed

3.6. Assess Parallel Feasibility [coordinated only]

For each candidate from Step 3, if resource claims were enumerated in Step 3.5:

1. Estimate scope: Identify likely files, API endpoints, DB tables, and events the feature would touch
2. Check lock overlap: Compare estimated scope against the resource occupation map
3. Classify feasibility:
   • FULL -- No resource overlap; safe for full parallel execution
   • PARTIAL -- Some overlap; can run in parallel with serialized access to shared resources
   • SEQUENTIAL -- Heavy overlap; must wait for in-flight features to complete

Add these fields to the ranked output when available:

Field	Description
Parallel Feasibility	FULL / PARTIAL / SEQUENTIAL (or N/A if coordinator unavailable)
Resource Conflicts	List of overlapping locks (if any)
Independent Zones	Which parallel_zones.json groups are available

4. Recommend Next Execution Path

For the top recommendation, include:

• Why now
• Dependencies or blockers
• Suggested starter command:
  • /plan-feature <description>
  • or /iterate-on-plan <change-id> if a related proposal exists

5. Persist Discovery Artifacts

Write/update machine-readable discovery artifacts:

• docs/feature-discovery/opportunities.json (current ranked opportunities)
• docs/feature-discovery/history.json (recent top recommendations with timestamps/status)

Rules:

• If an opportunity from recent history is still deferred and unchanged, lower its default priority unless new evidence justifies reranking
• Include stable IDs so /prioritize-proposals can reference opportunities without text matching
• If gen-eval signals were available (step 2.5), include a gen_eval_signals field in opportunities.json with: { "report_path": "<path>", "failing_interfaces": [...], "coverage_pct": <float>, "categories_below_threshold": [...] }
• If Step 0.5 ran, include a top-level localized_focus field in opportunities.json capturing the interview output (raw input, bucket detected, questions asked, answers, derived focus string). This makes the ranking reproducible and gives /prioritize-proposals the same context the user provided

Output

• Prioritized feature opportunity list with rationale
• One recommended next feature and concrete follow-up command
• Machine-readable discovery output path(s) and whether recommendation history altered ranking

Common Rationalizations

Rationalization	Why it's wrong
"I already know what we should build — skip the lenses"	Pre-loaded answers come from the most recently active mental model, not the highest-value option. The lenses are how you discover alternatives you wouldn't have generated otherwise.
"The HMW reframe is just rewording — it doesn't change the answer"	"Make X faster" anchors you to optimization. "How might we eliminate X?" surfaces removal candidates that are usually 10× cheaper. The reframe is the work.
"Listing NOT DOING items is filler — the report is about what we WILL do"	The rejected branches ARE the audit trail. Without them, future agents cannot tell whether the recommendation was a considered choice or a default.
"Only 1 lens hit — that's enough, ship the candidate"	One-lens hits are local maxima. A genuinely strong candidate surfaces from 2+ lenses (e.g., simplification AND 10×). One-lens hits should be marked low-confidence, not headlined.
"Focus interview is for vague input — my $ARGUMENTS is specific"	"Performance" looks specific but is a bucket. Run the interview anyway when the bucket name matches one of the broad buckets in Step 0.5; the cost is 30 seconds, the upside is a focus_match score that actually means something.

Red Flags

• The opportunities.json output has lenses_applied: [] for all candidates (the lenses were skipped or fabricated).
• NOT DOING: section is missing or contains only "" (no alternatives were considered, or the author is performing the form without the substance).
• Every candidate is in the quick-win bucket — strongly suggests inversion / 10× / big-bet lenses were not applied.
• HMW reframes are absent, or every reframe is "How might we make X faster?" (mechanical, not generative).
• The ranked list's top candidate is the first one the agent thought of (no evidence of comparison to alternatives).
• localized_focus is empty even when $ARGUMENTS was non-empty (the interview was run unnecessarily, or the focus from $ARGUMENTS was discarded).

Verification

1. Each candidate in opportunities.json has at least one hmw_reframe entry AND at least one entry in lenses_applied from the 8 named lenses.
2. The output report contains a top-level NOT DOING: section with ≥2 rejected alternatives, each with a one-line rationale (cite the file path and section).
3. At least 3 of the 8 ideation lenses appear at least once across the candidate set (opportunities.json | jq '[.[] | .lenses_applied[]] | unique | length' returns ≥3).
4. The recommended next action cites the candidate's focus_match score and localized_focus_alignment note — not just the raw ranking.
5. If $ARGUMENTS matched a broad bucket, the focus interview ran and localized_focus is populated with the interview output (not the raw bucket name).