Learn Spec-Driven Development
Real-world examples, case studies, and best practices for building production-ready code with runtime contracts and AI assistance.
Featured Posts
From Vibe Coding to Verified Specs: How SpecFact Completes the SDD Workflow in DevSecOps
Spec-Driven Development tools like OpenSpec and Spec-Kit create great specs. SpecFact adds the missing enforcement layer that prevents drift, catches regressions, and integrates with your CI/CD pipeline. Here's how executable contracts bridge the gap between intent and implementation.
Read article →OpenSpec Journey: Change Proposals Meet Runtime Enforcement
OpenSpec anchors change proposals and specs. SpecFact adds brownfield analysis, runtime contracts, and DevOps export. This guide shows OpenSpec-first and code-first workflows with commands you can run.
Read article →Spec-Kit Journey: Interactive Specs With Deterministic Enforcement
Spec-Kit slash commands are fast for new specs. SpecFact adds brownfield analysis, runtime contracts, and drift detection for legacy code, then syncs back to Spec-Kit for living documentation.
Read article →code2spec: How SpecFact Reverse Engineers Python Legacy Code
Step-by-step guide to reverse engineering legacy Python code into executable contracts. Learn how SpecFact uses AST analysis, contract generation, and symbolic execution to document undocumented codebases in minutes, not weeks.
Read article →We Dogfooded SpecFact CLI on Itself
We ran SpecFact CLI on its own codebase. In under 10 seconds, it discovered 19 features, found 24 deviations, and blocked a merge.
Read article →Why Legacy Code Modernization Needs Runtime Enforcement, Not Just Documentation
Legacy modernization is a $25B market, but documentation alone doesn't prevent regressions. Runtime contract enforcement catches bugs automatically, while symbolic execution finds edge cases mathematically.
Read article →5 Real Bugs Our CLI Caught
Async race conditions, type mismatches, breaking changes — here are 5 real bugs caught through VS Code, Cursor, and GitHub Actions.
Read article →Resources
Getting Started
Install SpecFact and run your first analysis.
Documentation
Complete guides and reference docs.
Agile Team Workflows
Persona-based collaboration for POs, devs, and architects.
Bridge Adapters
Spec-Kit (first). Azure DevOps, Jira, Linear coming.
Discussions
Ask questions, share ideas on GitHub.
Issues
Report bugs or request features.
Ready to start?
For best results, use slash commands in your AI IDE (Cursor, VS Code + Copilot):
specfact init --ide cursor Then use /specfact.01-import --repo . in your IDE for LLM-enriched analysis.
Or run CLI directly: uvx specfact-cli@latest import from-code my-project --repo .