A Product Requirements Document (PRD) in Castspells.io is a comprehensive, living document that outlines what you're building, why you're building it, who it's for, and how success will be measured. Unlike traditional static PRDs, Castspells.io PRDs link directly to your existing research, personas, markets, solutions, and tasks.
What is a PRD?
PRD Editor
PRDs help product teams align on:
What you're building (features, capabilities, scope)
Why you're building it (business objectives, user needs, validated hypotheses)
Who it's for (target markets, personas based on your research)
When it will be delivered (timeline, milestones, roadmap integration)
How success will be measured (metrics, KPIs linked to validation data)
Connected Documentation
PRDs in Castspells.io are dynamic documents that stay connected to your research. When your market analysis updates, your personas evolve, or your hypotheses get validated, the linked sections in your PRD reflect those changes automatically.
Creating a PRD
Navigate to the PRDs section and click Create a PRD:
Enter a descriptive name (e.g., "Q1 2025 Mobile App Redesign", "Payment Integration v2")
Click Create
Your PRD opens with a default template containing common sections
The default template includes:
Overview
Target Market
Target Personas
Goals & Success Metrics
Requirements
Roadmap
Related Data
PRD Sections
PRDs are built from flexible sections that you can add, remove, and reorder:
Text Sections
Free-form rich text content for descriptions, requirements, and specifications:
Product overview and vision statements
Goals and success metrics
Functional and non-functional requirements
Technical specifications
Launch plans and go-to-market strategy
Risk assessments and mitigation plans
Data Sections
Link to existing entities from your workspace:
Hypotheses: Include validated assumptions that support your product decisions
Solutions: Reference the solutions you're planning to build
Tasks: Connect to implementation tasks and user stories
Insights: Embed validation data and research findings
Click the Add Section button between existing sections or at the end of your PRD:
Choose the section type (Text, Data, Market, Persona, Roadmap)
Configure the section content
Position it where it fits in your document flow
Editing Sections
Text Sections: Click into the text area to use the rich text editor. Format text, add lists, include links, and structure content with headings.
Entity Sections: Use the selector to link entities:
Search for hypotheses, solutions, tasks, or insights
Choose markets from your market research
Select personas from your customer voice data
Pick time ranges for roadmap displays
Removing Sections
Click the delete button in the section header. This only removes the section from the PRD - it doesn't delete the underlying data entities.
PRD Features
Timeline
Set start and end dates to indicate the planning period. This helps teams understand the delivery timeframe and enables filtering in roadmap views.
Lock/Unlock
Control editing access:
Unlocked: Team members can edit the PRD
Locked: PRD is read-only for review or after approval
Toggle lock status using the lock icon in the PRD header.
Print to PDF
Generate professional PDF versions:
Click the Print icon in the PRD header
Use your browser's print dialog
Choose "Save as PDF"
Configure paper size and margins
The PRD is automatically formatted for print with clean layout, high-contrast styling, and logical page breaks.
PRD Best Practices
Research-Backed PRDs
Ground your PRD in validated research:
Link to Market Research: Use Market sections to establish market context
Reference Personas: Use Persona sections to make target users explicit
Include Validated Hypotheses: Link to Hypotheses you've tested
Connect Solutions: Reference Solutions that address validated opportunities
Track with Tasks: Show implementation progress via linked Tasks
Keep PRDs Focused
Create separate PRDs for distinct initiatives rather than one massive document. Focused PRDs are easier to:
Review and approve
Execute against
Update as plans evolve
Share with specific stakeholders
Update Regularly
Because PRD sections link to live data, entity information stays current automatically. Update text sections as strategy and requirements evolve.
Use Templates
Create a PRD with your preferred structure, then duplicate it for new initiatives. This ensures consistency across your product documentation.
Share with Stakeholders
Use the print/PDF feature to share PRDs in:
Planning meetings
Stakeholder reviews
Executive presentations
Team kickoffs
The read-only format is perfect for alignment discussions where editing isn't needed.
AI-Assisted PRD Creation
PRD Generation Spell
Use the PRD Generation Spell to automatically populate PRD sections based on your existing research, hypotheses, and solutions. The AI analyzes your workspace data and suggests content for each section.
Generating PRD Content
Open a PRD in edit mode
Click the spell icon on any text section
Choose from generation options:
Generate from Research: Creates content based on linked markets, personas, and hypotheses
Expand Requirements: Elaborates on bullet points into detailed specifications
Suggest Success Metrics: Proposes KPIs based on your goals and validation data
PRD Editor