Tercel Spec Forge Idea

Idea — Brainstorming & Demand Validation

Explore, research, validate, and crystallize ideas through iterative sessions before committing to formal specification. Every idea must prove it's a real need before graduating.

Core Principles

1. Brainstorm freely, validate ruthlessly: Early sessions are open and creative; later sessions demand evidence
2. Non-linear: Ideas evolve through multiple sessions, not in one sitting
3. Research-driven: Use web search, competitive analysis, and user evidence to ground ideas in reality
4. Anti-pseudo-requirement: Before graduating, every idea must answer "What happens if we don't build this?" — if the answer is "nothing significant", the idea is not ready
5. Persistent: Every session is recorded, nothing is lost
6. Project-local: Ideas live in the project's ideas/ directory, close to the codebase and docs they relate to

Storage Structure

ideas/ is a top-level directory at the project root, separate from docs/. Never nest it inside docs/.

{project-root}/
├── ideas/                          # Brainstorming workspace (TOP-LEVEL, not under docs/)
│   ├── {idea-name}/
│   │   ├── state.json              # Status, metadata, and validation checklist
│   │   ├── sessions/
│   │   │   ├── overview.md         # Session index: chronological order, summaries
│   │   │   ├── explore-initial-spark.md    # First session
│   │   │   ├── research-competitors.md     # Second session
│   │   │   ├── validate-demand.md          # Third session
│   │   │   └── ...
│   │   ├── research/
│   │   │   ├── competitors.md      # Competitive landscape analysis
│   │   │   └── market-notes.md     # Market research, user evidence, data points
│   │   └── draft.md                # Evolving summary (auto-updated after each session)
│   └── ...
├── docs/                           # Formal spec documents (PRD, SRS, etc.)
└── .gitignore                      # Add "ideas/" if you want to keep them private

.gitignore Guidance

On first run, if ideas/ does not exist, ask the user:

• Add to .gitignore (Recommended) — ideas are personal working notes, keep them local
• Commit to Git — share brainstorming with the team for collaboration
• Decide later — create the directory now, handle .gitignore manually

Session Types

Each return session, the user chooses a focus. The idea matures through these phases:

Phases are not strictly sequential — users can revisit any phase at any time. But an idea cannot reach ready status without completing the Validate phase.

Session Overview File

Each idea maintains a sessions/overview.md that tracks all sessions in chronological order. This file is the single source of truth for session ordering — filenames do NOT encode sequence.

Create this file when the first session is recorded. Update it after every subsequent session.

# Session Overview — {idea-name}

> Chronological index of brainstorming sessions.
> Updated: {date}

## Sessions

| # | Session | Type | Date | Summary |
|---|---------|------|------|---------|
| 1 | [explore-initial-spark](./explore-initial-spark.md) | Explore | {date} | {one-line summary} |
| 2 | [research-competitors](./research-competitors.md) | Research | {date} | {one-line summary} |
| 3 | [validate-demand](./validate-demand.md) | Validate | {date} | {one-line summary} |
| ... | ... | ... | ... | ... |

Rules:

• The # column is the chronological order (for human readability only — NOT part of the filename)
• Append new sessions at the bottom
• Never reorder or renumber existing entries

Workflow

Step 1: Initialize or Resume

1.1 Ensure Base Directory

IMPORTANT: ideas/ MUST be at the project root — the same level as docs/, NOT inside it.

• Correct: {project-root}/ideas/
• Wrong: {project-root}/docs/ideas/

Check if ideas/ exists in the project root. If not:

1. Create the ideas/ directory at the project root
2. Ask the user about .gitignore preference (see .gitignore Guidance above)
3. If user chooses to gitignore, add ideas/ to .gitignore

1.2 Parse Idea Name

Extract idea name from arguments. Convert to kebab-case.

If no name provided, list existing ideas:

Your Ideas:

  # | Idea            | Status     | Validated | Sessions | Last Updated
  1 | cool-feature    | refining   | Yes       | 5        | 2026-02-10
  2 | payment-system  | exploring  | No        | 1        | 2026-02-14
  3 | ai-assistant    | ready      | Yes       | 7        | 2026-02-12

Actions:
  Enter a number to resume that idea
  Enter a new name to start brainstorming

Use AskUserQuestion to let the user choose.

1.3 Check Existing State

Check if ideas/{idea-name}/ exists:

New idea (directory doesn't exist):

• Create directory structure: state.json, sessions/, research/, draft.md
• Initialize state.json:

  {
    "idea": "{idea-name}",
    "status": "exploring",
    "created": "{ISO timestamp}",
    "updated": "{ISO timestamp}",
    "session_count": 0,
    "draft_version": 0,
    "validation": {
      "problem_evidence": null,
      "demand_evidence": null,
      "competitive_analysis": false,
      "not_build_analysis": null,
      "validated": false
    }
  }
  

• Proceed to Step 2 (New Idea)

Existing idea:

• Read state.json
• If status is graduated: inform user this idea has already moved to formal specs, ask if they want to start a new variant
• If status is ready: ask if they want to continue refining, or graduate now
• If status is exploring, researching, or refining: read draft.md to restore context, proceed to Step 3 (Continue Session)

Step 2: New Idea — Opening Exploration

This is the first session for a brand new idea. The goal is to understand the user's raw thinking AND begin planting seeds of critical analysis.

2.1 Open-Ended Discovery

Use AskUserQuestion with open questions. Ask 2-3 at a time, adapt follow-ups based on answers.

Round 1 — The Spark:

• What's the idea? Describe it however you like (one sentence or a paragraph)
• What triggered this idea? (a pain point you experienced, something you saw, a user complaint, data you noticed?)

Round 2 — The Problem:

• What specific problem does this solve? Can you describe a concrete scenario where someone suffers without this?
• Who suffers from this problem? How often? How severely?
• What happens if this is NOT built? (Plant this question early — it's the core anti-pseudo-requirement check)

Round 3 — The Landscape:

• What existing solutions have you seen? (competitors, workarounds, manual processes)
• What do they get wrong? Why are they insufficient?
• If good solutions exist, why build another one?

Round 4 — The Shape:

• What would the simplest version look like? (MVP)
• What are you most uncertain about?

Do NOT force answers. If the user says "I don't know yet" — record it as an open question that needs research.

2.2 Initial Demand Signal Assessment

Based on the user's answers, provide an honest initial assessment:

Initial Demand Signal:

  Problem clarity:     [Clear / Vague / Unknown]
  Evidence of demand:  [Strong / Weak / None yet]
  Existing solutions:  [None / Inadequate / Good (risk!)]
  Differentiation:     [Clear / Unclear / Not yet defined]

  Suggested next session focus: [Research / Explore more / Validate]

Be honest. If the idea sounds like a solution looking for a problem, say so gently:

"The idea is interesting, but I notice we haven't identified who specifically suffers from this problem. In a future session, it would help to research concrete user pain points."

2.3 Record Session

Write the session to ideas/{idea-name}/sessions/{type}-{slug}.md (e.g., explore-initial-spark.md):

Session filename rules:

• Format: {session-type}-{brief-slug}.md where type is one of: explore, research, validate, refine
• The slug is a 2-4 word kebab-case description of the session focus (e.g., initial-spark, competitors, demand-check, mvp-scope)
• Do NOT use sequential numbers (001.md, 002.md, etc.) — chronological order is tracked in sessions/overview.md
• If a type repeats (e.g., two explore sessions), differentiate by slug: explore-initial-spark.md, explore-new-angles.md

Session filename:

# Session 1 — {date}
## Type: Exploration

## Context
{Where this idea came from, what triggered it}

## Key Points
- {Bullet points of main ideas discussed}

## Problem Definition
- **Who suffers**: {who}
- **How they suffer**: {pain description}
- **Current workaround**: {what they do today}

## Demand Signal
- Problem clarity: {Clear/Vague/Unknown}
- Evidence: {what evidence exists or is needed}

## Decisions
- {Any decisions made, even tentative ones}

## Open Questions
- {Things still uncertain or needing research}

## Research Needed
- {Specific research tasks identified for next session}

## Raw Notes
{Full Q&A exchange, preserving the user's original words}

2.4 Generate Initial Draft

Create draft.md:

# {Idea Name}

> Status: Exploring | Draft v1 | {date}

## One-Liner
{One sentence description}

## Problem
{What problem this solves — be specific about who suffers and how}

## Target Users
{Who would use this — be specific, not "everyone"}

## Core Concept
{How it would work at a high level}

## Existing Solutions & Gaps
{What exists today, why it's insufficient}

## MVP Scope
{Simplest useful version — or "not yet defined"}

## Demand Validation Status
- [ ] Problem backed by evidence (not just assumption)
- [ ] Target users identified and reachable
- [ ] Existing solutions analyzed (competitors, workarounds)
- [ ] "What if we don't build this?" answered convincingly
- [ ] At least one form of demand evidence (user complaints, data, research)

## Open Questions
- {List of unresolved questions}

## Research Backlog
- {Things to investigate in future sessions}

## Session History
- [{date}] explore-initial-spark — {one-line summary}

2.5 Update State and Wrap Up

Update state.json: session_count: 1, updated: now, draft_version: 1

Display:

Idea saved: {idea-name}
  Location: ideas/{idea-name}/
  Status: exploring
  Sessions: 1
  Validated: No

Suggested next session: {Research / Continue exploring}
  /spec-forge:idea {idea-name}

When validated and ready:
  /spec-forge {idea-name}         Start full spec chain

Step 3: Continue Session — Iterative Development

The user is returning to an existing idea.

3.1 Restore Context

Read draft.md and display a concise summary:

Resuming idea: {idea-name}
  Status: {status} | {session_count} sessions | Last: {last_date}
  Validated: {Yes/No}

Current summary:
  {One-liner from draft.md}

Validation status:
  [x] Problem backed by evidence
  [ ] Competitive analysis done
  [ ] "What if we don't build this?" answered
  ...

Open questions:
  - {question 1}
  - {question 2}

Research backlog:
  - {research item 1}

3.2 Choose Session Focus

Use AskUserQuestion:

• Explore — I have new thoughts or want to brainstorm further
• Research — Let's investigate the market, competitors, or user needs
• Validate — Challenge assumptions, check if this is a real need
• Refine — The direction is clear, let's sharpen the draft
• Graduate — This idea is validated and ready for formal specification
• Park — Set aside for now

3.3a: Explore Session

Open-ended brainstorming, similar to Step 2 but adaptive:

• Address open questions from previous sessions
• Explore new angles the user hasn't considered
• Challenge assumptions: "You mentioned X — have you considered Y?"
• Explore alternatives: "What if instead of A, you did B?"
• "What's the worst version of this that would still be useful?"
• "What would make you NOT use this product?"

Record as new session. Update draft.md with new insights.

3.3b: Research Session

This is where the idea gets grounded in reality. Use WebSearch and critical analysis.

Competitive Analysis

Use WebSearch to research:

1. Direct competitors (same problem, same solution approach)
2. Indirect competitors (same problem, different approach)
3. Adjacent solutions (different problem, similar technology)

For each competitor found, analyze:

• What they do well
• What they do poorly
• Their pricing model
• Their target users
• Why our idea is different (or is it?)

Write findings to research/competitors.md:

# Competitive Analysis — {idea-name}
> Last updated: {date}

## Direct Competitors
### {Competitor 1}
- **What they do**: ...
- **Strengths**: ...
- **Weaknesses**: ...
- **Why we're different**: ...

## Indirect Competitors / Workarounds
### {Alternative approach}
- ...

## Key Takeaway
{Is there a real gap in the market? Or is this already well-served?}

Market & Demand Research

Use WebSearch to find:

• How many people search for solutions to this problem?
• Forum posts, Reddit threads, Stack Overflow questions about this pain point
• Industry reports or blog posts discussing this need
• Any data on market size or growth

Write findings to research/market-notes.md.

User Evidence Gathering

Ask the user:

• Have you or anyone you know experienced this problem firsthand?
• Do you have access to user feedback, support tickets, or analytics that show this need?
• Can you point to specific user quotes, complaints, or feature requests?

Be rigorous: "I think users want this" is not evidence. Evidence is:

• User interviews or surveys
• Support ticket patterns
• Usage analytics showing friction points
• Community discussions (forums, social media)
• Competitor reviews mentioning gaps

Record all findings in the session file. Update draft.md with research results. Update state.json validation fields. Change status to researching if not already.

3.3c: Validate Session

The critical session that separates real needs from pseudo-requirements.

Run through the Demand Validation Checklist with the user:

Check 1: Problem Evidence

"What concrete evidence do we have that this problem exists and is painful enough to justify a solution?"

Rate: Strong (data, user quotes, patterns) / Moderate (anecdotes, logical reasoning) / Weak (assumption only)

If Weak: flag it. "This is still an assumption. Before going further, we need to find evidence. What's the cheapest way to validate this?"

Check 2: "What Happens If We Don't Build This?"

"Imagine we decide not to build this. What happens?"

Possible answers and their implications:

• "Users keep suffering with workarounds" → Real need — but how painful are the workarounds? Are they acceptable?
• "A competitor will beat us to it" → Competitive pressure — but is this a race worth running? What if the competitor also fails?
• "Nothing really changes" → RED FLAG: Pseudo-requirement. This idea may not be worth building.
• "We miss a business opportunity" → Opportunity cost — quantify it. How big is the opportunity?

Check 3: Target User Reality

"Can you name 3-5 specific people (or specific types of people) who would use this in the first week?"

If the user cannot name concrete early adopters, the target user definition is too vague.

Check 4: Differentiation Test

"If a user is already using {competitor/workaround}, why would they switch to this?"

Switching cost is real. The new solution must be significantly better, not just slightly different.

Check 5: Simplicity Test

"Can you explain what this does in one sentence to someone outside the industry?"

If not, the concept may be too complex or poorly defined.

Validation Verdict

After all checks, provide an honest assessment:

Validation Summary:

  Problem evidence:    [Strong / Moderate / Weak]
  "Not build" impact:  [Significant / Moderate / Low]
  Target users:        [Concrete / Vague]
  Differentiation:     [Clear / Unclear]
  Simplicity:          [Pass / Needs work]

  Overall: [VALIDATED / NEEDS WORK / NOT VALIDATED]

VALIDATED: All checks pass with at least Moderate strength → idea can proceed to ready

NEEDS WORK: Some checks are Weak → specific guidance on what to research or rethink next

NOT VALIDATED: Core checks fail (no problem evidence, no impact if not built) → honest conversation:

"Based on our analysis, this idea doesn't yet have strong evidence of real demand. That doesn't mean it's a bad idea — it means it needs more validation before committing resources to formal specification. Here's what I suggest..."

Update state.json validation fields and draft.md.

3.3d: Refine Session

Available only after validation passes. Shift to convergent thinking:

• Review each section of draft.md with the user
• Finalize MVP scope — ruthlessly cut anything non-essential
• Define preliminary success criteria (measurable)
• Identify technical constraints or risks
• Prepare the draft for handoff to /spec-forge:tech-design (or the full chain via /spec-forge)

Update draft.md to a polished version. Change status to refining.

When the draft has:

• Clear, evidence-backed problem statement
• Defined, reachable target users
• Concrete MVP scope
• No critical open questions
• Validation checklist complete

→ Suggest changing status to ready.

3.3e: Graduate

Pre-graduation check: Verify validation.validated is true in state.json. If not:

"This idea hasn't completed demand validation yet. Graduating without validation risks building something nobody needs. Would you like to run a validation session first, or graduate anyway (not recommended)?"

If user insists on graduating without validation, record it in state:

{ "validation": { "validated": false, "graduated_without_validation": true } }

If validated, update state.json:

{ "status": "ready" }

Display:

Idea '{idea-name}' is ready for formal specification!

  Validation: Passed
  Draft: ideas/{idea-name}/draft.md

To start the spec chain:
  /spec-forge {idea-name}         Full chain (Idea → Decompose → Tech Design + Feature Specs)

Optional (on-demand):
  /spec-forge:prd {idea-name}     PRD (for stakeholders)
  /spec-forge:srs {idea-name}     SRS (for compliance/audit)
  /spec-forge:test-cases {idea-name} Test cases with coverage matrix

Note: The actual graduated status is set by the /spec-forge chain command after it successfully generates the tech-design.

3.3f: Park

Update state.json: set status: 'parked', update updated timestamp. Display:

Idea '{idea-name}' parked.
  Everything is saved. Come back anytime:
  /spec-forge:idea {idea-name}

3.4 Record Session and Update

• Write session to sessions/{type}-{slug}.md (use session type + descriptive slug, NOT sequential numbers)
• Create or update sessions/overview.md to append the new session entry (see Session Overview below)
• Update draft.md with any new content
• Update research/ files if research was conducted
• Update state.json: session_count, updated, draft_version, status, validation

Status Definitions

Draft Validation Checklist

An idea cannot reach ready status without these being addressed:

• Problem backed by evidence — not just "I think this is needed"
• Target users identified — specific, reachable people, not "everyone"
• Competitive analysis done — know what exists, why it's insufficient
• "What if we don't build this?" answered — impact must be significant
• Demand evidence exists — at least one concrete data point (user quotes, analytics, market data, community signals)
• Differentiation clear — why switch from existing solutions
• MVP scope defined — simplest useful version, not the dream version

Notes

1. Project-local: Ideas are stored in the project's ideas/ directory. Users can add ideas/ to .gitignore for privacy, or commit for team collaboration.
2. Honest Assessment: Unlike pure brainstorming, this skill is designed to kill bad ideas early. A "NOT VALIDATED" result saves weeks of wasted development. Be honest, not encouraging.
3. Session Preservation: Every session is a separate file named {type}-{slug}.md. Never overwrite or merge sessions — they are the historical record of how the idea evolved. Chronological order is tracked in sessions/overview.md, not in filenames.
4. Research Artifacts: The research/ directory preserves competitive analysis and market research. This data feeds directly into the PRD's market analysis and competitive sections.
5. Draft Evolution: draft.md is the living document that evolves. Old versions are implicitly preserved in the session history.
6. Anti-Pseudo-Requirement: This principle carries through the entire spec-forge chain. It starts here at the idea stage, is reinforced in the PRD (demand evidence, feasibility verdict), and is traced through SRS and Tech Design.

Source: tercel/spec-forge — distributed by TomeVault.