Product Requirements Document (PRD)
Outlines a 14-week plan to build an AI blog generator with live research, anti-detection writing, and interactive calculators.
What this file does
Outlines a 14-week plan to build an AI blog generator with live research, anti-detection writing, and interactive calculators.
When to use it
- Planning a multi-phase AI content platform
- Defining features for a blog generator with research and calculations
- Creating a PRD for a SaaS product with tiered pricing
- Structuring a development roadmap with success criteria per phase
Assumes this stack
Product Requirements Document (PRD)
AI Blog Generator Platform
Executive Summary
Build an autonomous AI-powered blog generation platform that creates high-quality, research-backed, long-form content (2,000-3,000 words) that reads as human-written first-person narratives. The system will conduct real-time research, include data-driven calculations, and produce genuinely valuable content indistinguishable from expert human writers.
Product Vision
Mission: Create an AI platform that doesn't just generate content—it conducts research, performs analysis, and writes authoritative articles that provide genuine value to readers while maintaining a distinct human voice.
Differentiation: Unlike generic AI writers, this platform:
- Conducts live web research for every article
- Includes real calculations and data analysis
- Writes in first-person with personality and opinion
- Creates content that passes AI detection
- Generates comprehensive 2,000-3,000 word pieces
- Builds thematic content collections
Target Users
- Solo Content Creators — Build authority blogs without writing
- Marketing Teams — Scale content production with quality
- Niche Site Builders — Create topical authority sites
- Thought Leaders — Generate research-backed thought leadership
- SEO Professionals — Create search-optimized comprehensive content
Core Features & Requirements
Phase 1: Foundation (Weeks 1-2)
Goal: Basic platform with authentication and simple generation
Features:
-
User Authentication
- Email/password login
- Role-based access (admin/editor)
- Session management
-
Basic Blog Generation
- Topic input
- Single AI call generation
- 500-800 word output
- Markdown formatting
-
Content Management
- Draft/Published status
- Basic editing interface
- Slug generation
-
Database Schema
- Users, Blogs, Themes tables
- Generation history tracking
Success Criteria:
- User can log in and generate a basic blog
- Content saves to database
- Can view and edit generated content
Phase 2: Research Engine (Weeks 3-4)
Goal: Add real-time research capabilities
Features:
-
Web Search Integration
- Brave Search API integration
- 10-15 relevant sources per article
- Source credibility scoring
- Automatic citation insertion
-
Research Summarization
- Extract key statistics
- Identify expert quotes
- Find recent developments
- Compile data points
-
Research Storage
- Save research per generation
- Reusable research across articles
- Source library building
Success Criteria:
- Generated blogs include 5+ cited sources
- Research happens automatically pre-writing
- Sources are authoritative (news, .edu, .gov, established blogs)
Phase 3: Advanced Writing Engine (Weeks 5-6)
Goal: Long-form, human-like content with personality
Features:
-
Multi-Stage Generation Pipeline
Research → Outline → Introduction → Sections → Conclusion → Edit -
First-Person Voice Options
- Persona selection (Expert, Experienced, Curious, Skeptical)
- Tone calibration (Conversational, Authoritative, Friendly)
- Opinion injection (takes stances, expresses preferences)
-
Variable Length Control
- Short: 800-1,200 words (quick guides)
- Medium: 1,500-2,000 words (standard articles)
- Long: 2,500-3,500 words (comprehensive guides)
- Epic: 4,000+ words (pillar content)
-
Anti-AI Detection
- Perplexity variation
- Burstiness in sentence structure
- Personal anecdotes injection
- Idiomatic expressions
- Imperfections (occasional fragments, rhetorical questions)
-
Content Elements
- Compelling hooks
- Storytelling arcs
- Counter-arguments
- Personal opinions
- Calls to action
- Reader engagement questions
Success Criteria:
- Passes AI detection tools ( originality.ai, GPTZero)
- Reads as genuine first-person perspective
- 2,000+ word outputs consistently
- Includes opinions and personality
Phase 4: Calculations & Data (Weeks 7-8)
Goal: Include interactive calculations and data analysis
Features:
-
Embedded Calculators
- Compound interest calculator
- ROI calculator
- Savings rate calculator
- Mortgage/rent vs buy calculator
- FIRE number calculator
-
Data Visualizations
- Auto-generated charts
- Comparison tables
- Progress trackers
- Scenario comparisons
-
Real-Time Data Integration
- Stock prices (via Yahoo Finance API)
- Interest rates
- Inflation data
- Market indices
-
Example Scenarios
- "What if you invested $500/month starting at 25?"
- "Compare 6% vs 8% returns over 30 years"
- "Cost of waiting 5 years to invest"
Success Criteria:
- Articles include 2-3 interactive calculators
- Real data is current (within 24 hours)
- Calculations are accurate and cited
- Visual elements enhance understanding
Phase 5: Theme Collections (Weeks 9-10)
Goal: Build topical authority through series
Features:
-
Theme Management
- Create content themes (e.g., "FIRE Movement", "Debt Freedom")
- Define theme parameters (tone, audience, keywords)
- Auto-suggest related topics
-
Series Generation
- Generate 5-10 article series on a theme
- Internal linking between articles
- Progressive complexity (beginner → advanced)
- Content calendar scheduling
-
Topical Authority Building
- Cover all aspects of a topic
- Cornerstone/pillar content strategy
- Supporting article clusters
- Auto-generated hub pages
-
Content Variety Within Themes
- "How to" guides
- "Mistakes to avoid" warnings
- "Case studies" and examples
- "Deep dive" explainers
- "Latest trends" updates
Success Criteria:
- Can create 10-article series with one click
- Articles interlink naturally
- Complete topic coverage
- Hub page auto-generates with series
Phase 6: Media & Enhancement (Weeks 11-12)
Goal: Rich media integration
Features:
-
Image Integration
- Unsplash API for stock photos
- AI image generation (DALL-E/Stable Diffusion)
- Chart/image placement optimization
- Alt text generation
-
Video Scripts
- Generate YouTube video scripts from articles
- Timestamp suggestions
- Visual direction notes
-
Social Media Assets
- Twitter thread generation
- LinkedIn post variants
- Instagram caption creation
-
SEO Optimization
- Automatic keyword research
- Meta title/description generation
- Header tag optimization
- Internal linking suggestions
Success Criteria:
- Each article has 3-5 relevant images
- Social variants generated automatically
- SEO score 90+ on clearscope/surfer
Phase 7: Automation & Scheduling (Weeks 13-14)
Goal: Autopilot content creation
Features:
-
Scheduled Generation
- Queue up topics in advance
- Auto-publish on schedule
- Content calendar view
-
Trend-Based Auto-Generation
- Monitor Google Trends
- Auto-generate content on trending topics in niche
- News-reactive content creation
-
Content Refresh
- Identify outdated articles
- Auto-update with new data
- Republish with "Updated" label
-
Email Newsletter
- Auto-compile weekly digest
- Subscriber management
- SendGrid/Mailgun integration
Success Criteria:
- Can schedule 30 days of content
- Auto-publishes without intervention
- Newsletter sends automatically
Technical Architecture
Stack
- Frontend: Next.js 16, TypeScript, Tailwind CSS
- Backend: Next.js API Routes, SQLite (local), PostgreSQL (production)
- Auth: NextAuth.js
- AI: OpenRouter (Kimi 2.5, GPT-4, Claude access)
- Search: Brave Search API
- Images: Unsplash API, DALL-E API
- Data: Yahoo Finance API, FRED API (economic data)
- Hosting: Vercel (frontend), Railway/Render (backend + DB)
Database Schema
-- Users
users (id, email, name, password_hash, role, created_at)
-- Themes/Collections
themes (id, name, slug, description, keywords, tone, target_audience,
settings, content_strategy, created_by, created_at)
-- Blogs
blogs (id, title, slug, excerpt, content, status, author_id, theme_id,
seo_title, seo_description, keywords, featured_image, images,
sources, calculations, word_count, reading_time, generated_by,
ai_detect_score, published_at, created_at, updated_at)
-- Research Cache
research (id, query, sources, summary, data_points, created_at, expires_at)
-- Generations
generations (id, blog_id, theme_id, prompt, model, status, output,
cost, tokens_used, research_used, error, created_at, completed_at)
-- Scheduled Content
scheduled_content (id, blog_id, scheduled_for, status, published_at)
-- Media Library
media (id, type, url, alt_text, source, generated_by, created_at)
AI Pipeline Flow
1. USER INPUT
└── Topic, theme, length, tone preferences
2. RESEARCH PHASE (2-3 min)
├── Web search (10-15 queries)
├── Extract key data points
├── Find statistics and quotes
├── Compile source list
└── Store research cache
3. OUTLINE PHASE (30 sec)
├── Generate H2/H3 structure
├── Plan word count per section
├── Identify calculator opportunities
└── Determine image placement
4. WRITING PHASE (5-8 min)
├── Generate hook/intro (200-300 words)
├── For each section:
│ ├── Write content (300-500 words)
│ ├── Include research citations
│ ├── Add personal opinion
│ └── Insert relevant data
├── Generate conclusion (150-200 words)
└── Add CTAs and engagement
5. ENHANCEMENT PHASE (1 min)
├── Add markdown formatting
├── Insert calculator placeholders
├── Optimize for readability
├── Check AI detection score
└── Final edit pass
6. OUTPUT
└── Full article + metadata + sources
Quality Standards
Content Requirements
- Length: 2,000-3,000 words (default), 800-5,000 (range)
- Research: Minimum 5 authoritative sources cited
- Calculations: 2-3 interactive calculators per financial article
- Images: 3-5 relevant images with alt text
- Originality: <30% AI detection probability
- Readability: Flesch-Kincaid 50-70 (8th-10th grade)
- SEO: Target keyword density 1-2%, LSI keywords included
Voice & Tone Standards
- First-person singular (I, me, my, mine)
- Conversational but knowledgeable
- Occasional informality (contractions, colloquialisms)
- Personal opinions and preferences stated
- Imperfections allowed (sentence fragments, rhetorical questions)
- Enthusiasm and personality
Anti-AI Markers
- Variable sentence length (short punchy + long complex)
- Personal anecdotes and examples
- Transitional phrases ("But here's the thing...", "Look, I get it...")
- Imperfections ("Kind of", "sort of", "you know?")
- Cultural references
- Opinions and bias
- Self-correction ("Actually, let me rephrase...")
Monetization Strategy
Pricing Tiers
Free (Hobby)
- 3 generations/month
- 1,000 words max
- Basic research
- Community support
Starter ($29/month)
- 20 generations/month
- 2,500 words max
- Full research
- Email support
Professional ($79/month)
- 50 generations/month
- 5,000 words max
- Priority research
- Theme collections
- API access
- Chat support
Agency ($199/month)
- Unlimited generations
- Unlimited length
- White-label option
- Team collaboration
- Dedicated support
- Custom integrations
Competitive Analysis
| Feature | Machined.ai | Jasper | Our Platform |
|---|---|---|---|
| Research | ❌ | ❌ | ✅ Live web |
| Length | 2,000+ words | Variable | 2,000-3,500 |
| Human voice | ⚠️ | ⚠️ | ✅ First-person |
| Calculations | ❌ | ❌ | ✅ Interactive |
| AI Detection | ❌ | ❌ | ✅ Anti-detection |
| Themes | ✅ | ❌ | ✅ Advanced |
| Real-time data | ❌ | ❌ | ✅ Live APIs |
| Price | $49/mo | $49/mo | $29-79/mo |
Success Metrics
Technical KPIs
- Generation success rate: >95%
- Average generation time: <10 minutes
- Uptime: 99.9%
- API response time: <2 seconds
Content KPIs
- AI detection pass rate: >80%
- Average word count: 2,200+
- Sources per article: 5+
- User satisfaction: >4.5/5
Business KPIs
- Monthly active users: 1,000 (Year 1)
- Paid conversion rate: 5%
- Churn rate: <5%/month
- LTV:CAC ratio: >3:1
Risk Mitigation
Technical Risks
- AI API downtime: Multi-provider fallback (OpenRouter)
- Rate limiting: Queue system with retries
- Data loss: Daily backups, version control
Content Risks
- AI detection: Continuous model refinement
- Factual errors: Source verification layer
- Copyright: Original content generation only
Business Risks
- Competition: Continuous innovation, unique features
- AI regulation: Transparency about AI usage
- Cost increases: Efficient token usage, caching
Implementation Timeline
| Phase | Duration | Key Deliverable |
|---|---|---|
| 1. Foundation | 2 weeks | Working prototype |
| 2. Research | 2 weeks | Research engine |
| 3. Writing | 2 weeks | Long-form content |
| 4. Calculations | 2 weeks | Interactive elements |
| 5. Themes | 2 weeks | Collection system |
| 6. Media | 2 weeks | Rich content |
| 7. Automation | 2 weeks | Autopilot mode |
| Total | 14 weeks | Full platform |
Next Steps
- Approve PRD — Review and finalize requirements
- Phase 1 Kickoff — Begin foundation build
- API Keys — Set up OpenRouter, Brave Search
- Design Mockups — UI/UX for dashboard
- Weekly Sprints — Agile development cycles
Document Version: 1.0
Last Updated: 2026-02-02
Author: EM38Bot
Status: Draft — Pending Approval
What's inside
7 phases with features, success criteria, technical architecture, database schema, AI pipeline, quality standards, monetization, and timeline.
Change this for your project
- Replace
meagherphilip/nextjs-finance-blogwith your own repository name - Replace
EM38Botwith your own author identifier - Replace
2026-02-02with the current date - Replace pricing tiers (
$29/month,$79/month,$199/month) with your own values
Where it goes
Keep it in your repository where the agent or team that needs it will read it.
Worth borrowing
- Phase-based feature breakdown with explicit success criteria per phase
- AI pipeline flow diagram showing step-by-step generation stages
- Anti-AI detection markers listed as concrete writing techniques
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