---
name: flow-next-interview
description: Interview user in-depth about an epic, task, or spec file to extract complete implementation details. Use when user wants to flesh out a spec, refine requirements, or clarify a feature before building. Triggers on /flow-next:interview with Flow IDs (fn-1-add-oauth, fn-1-add-oauth.2, or legacy fn-1, fn-1.2, fn-1-xxx, fn-1-xxx.2) or file paths.
user-invocable: false
---

# Flow interview

Conduct an extremely thorough interview about a task/spec and write refined details back.

**IMPORTANT**: This plugin uses `.flow/` for ALL task tracking. Do NOT use markdown TODOs, plan files, TodoWrite, or other tracking methods. All task state must be read and written via `flowctl`.

**CRITICAL: flowctl is BUNDLED — NOT installed globally.** `which flowctl` will fail (expected). Always use:
```bash
FLOWCTL="${DROID_PLUGIN_ROOT:-${CLAUDE_PLUGIN_ROOT:-$HOME/.codex}}/scripts/flowctl"
[ -x "$FLOWCTL" ] || FLOWCTL=".flow/bin/flowctl"
$FLOWCTL <command>
```

## Pre-check: Local setup version

If `.flow/meta.json` exists and has `setup_version`, compare to plugin version:
```bash
SETUP_VER=$(jq -r '.setup_version // empty' .flow/meta.json 2>/dev/null)
# Portable: Claude Code uses .claude-plugin, Factory Droid uses .factory-plugin
PLUGIN_JSON="${DROID_PLUGIN_ROOT:-${CLAUDE_PLUGIN_ROOT:-$HOME/.codex}}/.codex-plugin/plugin.json"
[[ -f "$PLUGIN_JSON" ]] || PLUGIN_JSON="${DROID_PLUGIN_ROOT:-${CLAUDE_PLUGIN_ROOT}}/.claude-plugin/plugin.json"
PLUGIN_VER=$(jq -r '.version' "$PLUGIN_JSON" 2>/dev/null || echo "unknown")
if [[ -n "$SETUP_VER" && "$PLUGIN_VER" != "unknown" ]]; then
 [[ "$SETUP_VER" = "$PLUGIN_VER" ]] || echo "Plugin updated to v${PLUGIN_VER}. Run /flow-next:setup to refresh local scripts (current: v${SETUP_VER})."
fi
```
Continue regardless (non-blocking).

**Role**: technical interviewer, spec refiner
**Goal**: extract complete implementation details through deep questioning (40+ questions typical)

## Input

Full request: $ARGUMENTS

Accepts:
- **Flow epic ID** `fn-N-slug` (e.g., `fn-1-add-oauth`) or legacy `fn-N`/`fn-N-xxx`: Fetch with `flowctl show`, write back with `flowctl epic set-plan`
- **Flow task ID** `fn-N-slug.M` (e.g., `fn-1-add-oauth.2`) or legacy `fn-N.M`/`fn-N-xxx.M`: Fetch with `flowctl show`, write back with `flowctl task set-description/set-acceptance`
- **File path** (e.g., `docs/spec.md`): Read file, interview, rewrite file
- **Empty**: Prompt for target

Examples:
- `/flow-next:interview fn-1-add-oauth`
- `/flow-next:interview fn-1-add-oauth.3`
- `/flow-next:interview fn-1` (legacy formats fn-1, fn-1-xxx still supported)
- `/flow-next:interview docs/oauth-spec.md`

If empty, ask: "What should I interview you about? Give me a Flow ID (e.g., fn-1-add-oauth) or file path (e.g., docs/spec.md)"

## Setup

```bash
FLOWCTL="${DROID_PLUGIN_ROOT:-${CLAUDE_PLUGIN_ROOT:-$HOME/.codex}}/scripts/flowctl"
```

## Detect Input Type

1. **Flow epic ID pattern**: matches `fn-\d+(-[a-z0-9-]+)?` (e.g., fn-1-add-oauth, fn-12, fn-2-fix-login-bug)
 - Fetch: `$FLOWCTL show <id> --json`
 - Read spec: `$FLOWCTL cat <id>`

2. **Flow task ID pattern**: matches `fn-\d+(-[a-z0-9-]+)?\.\d+` (e.g., fn-1-add-oauth.3, fn-12.5)
 - Fetch: `$FLOWCTL show <id> --json`
 - Read spec: `$FLOWCTL cat <id>`
 - Also get epic context: `$FLOWCTL cat <epic-id>`

3. **File path**: anything else with a path-like structure or .md extension
 - Read file contents
 - If file doesn't exist, ask user to provide valid path

## Interview Process

**CRITICAL REQUIREMENT**: You MUST use the `request_user_input` tool for every question.

- DO NOT output questions as text
- DO NOT list questions in your response
- ONLY ask questions via request_user_input primitive calls
- Group 2-4 related questions per tool call
- Expect 40+ questions total for complex specs

**Anti-pattern (WRONG)**:
```
Question 1: What database should we use?
Options: a) PostgreSQL b) SQLite c) MongoDB
```

**Correct pattern**: Call request_user_input primitive with question and options.

### Question Format: Lead with Recommendation

Every `request_user_input` body must include the agent's recommended option AND a confidence tier. Mirrors the canonical phrasing in `flow-next-audit/SKILL.md:64` ("Lead with the recommended option and a one-sentence rationale"). Fall back to numbered options in plain text only when the tool is unreachable.

Pattern:

- `question.body`: "<options summary>. Recommended: <X> — <one-sentence rationale>. Confidence: [high | judgment-call | your-call]."
- `question.options`: neutral labels (no "(recommended)" markers — recommendation goes in the body; neutral options reduce anchoring)

Confidence tiers (mandatory — pick one per question):

- `[high]` — strong codebase signal or convention match. Recommendation is load-bearing; user can usually accept.
- `[judgment-call]` — slight lean but reasonable people disagree. User's call carries weight.
- `[your-call]` — agent has no signal. "I genuinely don't know — your priority / domain knowledge / preference."

The `[your-call]` tier is **mandatory** when the agent has no basis for a recommendation. Skills that always recommend train users to defer (RLHF imitation of human bravado). Say so explicitly.

Examples (one per tier):

- `[high]`: "Where should the new validator live? Recommended: `src/utils/validation.ts` — three sibling validators (`validateEmail`, `validatePhone`, `validateUrl`) already live there and the test suite imports from that module. Confidence: [high]." Options: `src/utils/validation.ts`, `src/validators/`, `new module`.
- `[judgment-call]`: "Cache TTL for the rate-limiter? Recommended: 60s — short enough that drift stays bounded, long enough that the cache earns its keep. Confidence: [judgment-call]." Options: `30s`, `60s`, `300s`, `no cache`.
- `[your-call]`: "What error code should we return when the upstream API times out? Recommended: none — this depends on what callers expect and I don't see existing convention to copy. Confidence: [your-call]." Options: `502`, `503`, `504`, `408`.

### Question Order: Walk the Decision Tree

Walk down branches of the decision tree in dependency order. Don't ask about implementation details before establishing whether they're needed.

Concrete rules:

1. **Cap branch depth at 4.** Research shows >4 prior turns rarely improves question quality — drop deeper threads, ask about something else. Heuristic; revisit if too restrictive in real use.
2. **Discover-as-you-go**, not pre-compute. Adapt the next question based on prior answers. Don't lock a tree before you start.
3. **Surface abandoned branches.** When an answer prunes a sub-tree, say so explicitly: "Skipping persistence questions — you said no DB."
4. **One `request_user_input` call per turn**, period — never queue multiple tool calls back-to-back. Within that single call you may bundle 2-4 closely-related sub-questions per the existing batching rule above; do NOT pad with loosely-related questions just to hit four. The intent: one focused checkpoint per turn so the user isn't barraged with unrelated decisions in parallel. Use multi-select within a sub-question when options are non-exclusive.

Example flow:

> Q: "Does this feature need persistence?"
> A: "No, ephemeral state is fine."
> [agent prunes the {DB choice, schema design, migration plan} sub-tree]
> Q: "Skipped DB questions — you said ephemeral. Next: how should this state survive page reloads?"

### Investigate Codebase Before Asking

Before every question, classify it via the [questions.md](questions.md) **Pre-Question Taxonomy**:

- **Codebase-answerable** ("what exists / how it's wired / what conventions live here") → use Read / Grep / Glob to answer; log to spec's `## Resolved via Codebase` section with file:line evidence.
- **User-judgment-required** ("what should exist / what tradeoff to make / what priority") → ask via `request_user_input`.

If you find yourself answering a "should" question via grep, that's the bug. Stop and ask the user.

## Question Categories

Read [questions.md](questions.md) for all question categories and interview guidelines.

## NOT in scope (defer to /flow-next:plan)

- Research scouts (codebase analysis)
- File/line references
- Task creation (interview refines requirements, plan creates tasks)
- Task sizing (S/M/L)
- Dependency ordering
- Phased implementation details

## Write Refined Spec

After interview complete, write everything back — **scope depends on input type**.

### For NEW IDEA (text input, no Flow ID)

Create epic with interview output. **DO NOT create tasks** — that's `/flow-next:plan`'s job.

```bash
$FLOWCTL epic create --title "..." --json
$FLOWCTL epic set-plan <id> --file - --json <<'EOF'
# Epic Title

## Problem
Clear problem statement

## Key Decisions
Decisions made during interview (e.g., "Use OAuth not SAML", "Support mobile + web")

## Edge Cases
- Edge case 1
- Edge case 2

## Resolved via Codebase
(optional — omit if nothing was resolved this way during the interview)
Items the agent answered via Read / Grep / Glob, with file:line evidence. Separate from items the user answered. Lets reviewers spot-check assumptions later.

## Open Questions
Unresolved items that need research during planning

## Acceptance
- [ ] Criterion 1
- [ ] Criterion 2
EOF
```

Then suggest: "Run `/flow-next:plan fn-N` to research best practices and create tasks."

### For EXISTING EPIC (fn-N that already has tasks)

**First check if tasks exist:**
```bash
$FLOWCTL tasks --epic <id> --json
```

**If tasks exist:** Only update the epic spec (add edge cases, clarify requirements). **Do NOT touch task specs** — plan already created them.

**If no tasks:** Update epic spec, then suggest `/flow-next:plan`.

```bash
$FLOWCTL epic set-plan <id> --file - --json <<'EOF'
# Epic Title

## Problem
Clear problem statement

## Key Decisions
Decisions made during interview

## Edge Cases
- Edge case 1
- Edge case 2

## Resolved via Codebase
(optional — omit if nothing was resolved this way during the interview)
Items the agent answered via Read / Grep / Glob, with file:line evidence. Separate from items the user answered.

## Open Questions
Unresolved items

## Acceptance
- [ ] Criterion 1
- [ ] Criterion 2
EOF
```

### For Flow Task ID (fn-N.M)

**First check if task has existing spec from planning:**
```bash
$FLOWCTL cat <id>
```

**If task has substantial planning content** (description with file refs, sizing, approach):
- **Do NOT overwrite** — planning detail would be lost
- Only ADD new acceptance criteria discovered in interview:
 ```bash
 # Read existing acceptance, append new criteria
 $FLOWCTL task set-acceptance <id> --file /tmp/acc.md --json
 ```
- Or suggest interviewing the epic instead: `/flow-next:interview <epic-id>`

**If task is minimal** (just title, empty or stub description):
- Update task with interview findings
- Focus on **requirements**, not implementation details

```bash
$FLOWCTL task set-spec <id> --description /tmp/desc.md --acceptance /tmp/acc.md --json
```

Description should capture:
- What needs to be accomplished (not how)
- Edge cases discovered in interview
- Constraints and requirements

Do NOT add: file/line refs, sizing, implementation approach — that's plan's job.

### For File Path

Rewrite the file with refined spec:
- Preserve any existing structure/format
- Add sections for areas covered in interview
- Include edge cases, acceptance criteria
- Keep it requirements-focused (what, not how)

This is typically a pre-epic doc. After interview, suggest `/flow-next:plan <file>` to create epic + tasks.

## Completion

Show summary:
- Number of questions asked
- Key decisions captured
- What was written (Flow ID updated / file rewritten)

Suggest next step based on input type:
- New idea / epic without tasks → `/flow-next:plan fn-N`
- Epic with tasks → `/flow-next:work fn-N` (or more interview on specific tasks)
- Task → `/flow-next:work fn-N.M`
- File → `/flow-next:plan <file>`

## Notes

- This process should feel thorough - user should feel they've thought through everything
- Quality over speed - don't rush to finish