Beyond Excel. Create specs with AI.
From requirements to detailed design — collaborate in real-time as a team. AI assists every step of your system specification workflow.
Already used by development teams across Japan
Trusted by leading enterprises
Feeling the limits of Excel?
Version hell
v1_final, v1_final2, v1_confirmed... Which is the latest?
Knowledge silos
When the person in charge is away, no one can touch the specs.
Review bottlenecks
Endless email back-and-forth with file attachments.
No AI leverage
Manually writing hundreds of spec items one by one.
Invisible progress
No way to see completion status at a glance.
Inconsistent quality
Spec quality varies drastically by who wrote it.
Blueprint: From idea to spec in 15 minutes.
Just describe your project concept. AI automatically generates structured specifications — from requirements to detailed design.
Export to Excel & Markdown
Try Blueprint for freeDXSpec solves it all.
Optimized for the Japanese SDLC
Unlike overseas tools, DXSpec fully covers the design phases familiar to Japanese SI projects.
Requirements definition
- Use cases
- Function list
- Business requirements
- Non-functional requirements
Basic design
- Module breakdown
- Screen design
- DB design
- API design
Detailed design
- Test cases
- Batch design
- Report design
- External systems
Built by engineers who know the Japanese SI frontline.
Everything you need for spec management
A comprehensive platform replacing scattered Excel files and email chains.
Multi-tenant architecture
Company → Workspace → Project hierarchy with granular permissions.
Real-time collaboration
Multiple users co-edit simultaneously with live cursors and comments.
AI-powered suggestions
Context-aware AI assists every design item with smart suggestions.
Blueprint generation
Generate complete specs from a brief project description in minutes.
Review & version control
Structured approval workflows with full version history and audit trails.
Excel & Markdown export
Export to familiar formats. Import existing Excel specs seamlessly.
Get started in 4 simple steps
From sign-up to team collaboration — a smooth onboarding experience.
Sign up free
Create your account instantly with just an email address.
~1 min
Create a project
Set up your workspace and project, then invite your team.
~3 min
Generate with Blueprint
Describe your project and let AI auto-generate your specs.
~15 min
Collaborate as a team
Invite members and start co-editing specs in real-time.
Start immediately
Enterprise-grade security
Trusted by enterprise teams with the highest security standards.
SAML/SSO
Single sign-on for enterprise identity management
Japan DC hosting
Data stored in Japanese data centers
ISO 27001
Information security management certified
E2E encryption
End-to-end encryption for data in transit and at rest
Audit logs
Complete activity tracking for compliance
Vulnerability tested
Regular penetration testing completed
Frequently asked questions
Common questions about adopting DXSpec.
Yes. DXSpec supports importing Excel files (.xlsx) and automatically mapping them to the appropriate spec structure. Your existing work is preserved.
Our AI analyzes related specs within your project context and suggests content for each design item. You can accept, modify, or regenerate suggestions. The AI learns from your project's patterns.
Currently we offer a cloud-hosted solution with data stored in Japanese data centers. On-premise deployment is available for Enterprise plan customers.
We provide dedicated onboarding support (伴走支援) for all paid plans. This includes migration assistance, team training sessions, and a dedicated success manager for Enterprise customers.
Yes. We support invoice payment (請求書払い) and annual billing for enterprise procurement processes (稟議). Credit card payment is also available.
Take your spec management to the next level.
Join the teams replacing Excel with intelligent, collaborative specifications.