Build what you imagine.
An AI-assisted development environment for building functional, documented, and tested software. Runs in VS Code with Claude Code.
Sound familiar?
You start coding with AI and it feels like magic. You describe what you want and working code appears. Features come together fast. Then you get close to the finish line — a functional product is in sight — and the AI starts asking you what the purpose of the project is. It's lost context. It contradicts decisions from two days ago. At that point there's too much code to debug by hand, and the AI can't hold enough context to get back on track. You're stuck.
How Crucible solves this
This isn't a new problem. Humans can't solve an entire system in one shot either — but we figured it out long ago. We break big problems down, assign specialists, and give them ways to document their work and coordinate. Crucible applies the same idea to AI: specialized persona agents with the communication, coordination, and structure to create quality artifacts throughout the process, retaining the connection between a project's intent and its implementation.
You work with specialized agents to create and resolve tasks — producing requirements, designs, code, and tests for a fully functional output. Each agent has a full chat interface and access to specialized tools.
As you work, the system creates structured documents modeled on how the best software companies operate — requirements, designs, architecture decisions, code, and tests. It then learns from this knowledge base and becomes smarter the more you use it.
Task Management
Break work into trackable tasks in VS Code. See progress, manage dependencies, track blockers.
Knowledge Graph
Artifacts indexed and searchable. Context carries forward between sessions — the AI never starts from scratch.
Persona Workflows
Specialized roles — design, implementation, testing — each with appropriate tool access and workflow guidance.
Quality Gates
Validation before handoff. Signoff enforcement. Structured review that catches issues before they compound.
Semantic Search
Embeddings + full-text search across all project artifacts. Prior work informs future tasks.
Vision Preservation
Your original intent traces from requirements to design to code to verification. The AI knows why code exists, not just what it does.
Crucible vs Claude Code alone
Claude Code is powerful. Crucible makes it structured.
More throughput
Specialized agents operating in parallel — requirements, design, implementation, testing, security, DevOps — each working simultaneously on different tasks.
Better quality
Structured process and documentation at every stage. Quality gates enforce review before handoff. Every decision is traceable from intent to code.
Compounding efficiency
A project knowledge graph that grows as you build. Prior requirements inform future design. Past decisions guide new implementation. The system gets smarter with every task.
Who It's For
Good fit
- Developers building multi-file projects in VS Code
- Codebases too large for a single AI conversation
- Work that benefits from structured handoffs and discoverable decisions
- Anyone who's hit the wall where AI tools lose context
Probably not
- Quick scripts or single-file tasks — Claude Code alone is fine
- No VS Code or terminal experience
- Want fully autonomous AI — Crucible is a partner, not an autopilot
Crucible Alpha vs Pro
Alpha is available now. Pro is in active development.
Crucible Alpha
Available NowBuilt on Claude Code. Single LLM, full file system access. Best-effort documentation — does a good job but not locked in by design.
- Requires Claude Code
- Specialized AI personas
- Knowledge graph & semantic search
- Quality gates & traceability
- VS Code extension
- Open source (MIT)
Crucible Pro
In DevelopmentLLM-agnostic. Adaptive model selection for speed, cost, quality. Predictable file structures, locked-in quality gates, enforced process.
- Multi-LLM support — any provider
- Adaptive model selection
- State-machine orchestration (30+ sub-graphs)
- Agent swarming & auto-scaling pools
- Self-improving system capabilities
- Persistent sessions per persona
Get Started
Alpha is a v1 built fast — functional, real productivity gains, rough in places. It works. Read the full getting started guide →
Download Crucible for macOS — unzip and open the folder code Crucible-1.0.0 # Claude Code auto-connects via .mcp.json — tools available immediately. Requires: VS Code Claude Code Node.js 20+
Alternative: install from source
git clone https://github.com/ember-agentic/crucible && cd crucible && npm run install:all