Flagship engineering showcase

Llewellyn's Projects

Original projects, written for the public site, that show how Llewellyn Systems turns architecture into delivery. Each card opens a working explanation of the stack, the operating model, and the evidence behind it.

JupyterBookMySTVoilàBinderJupyterLabPyTorchMCPOpen-source
What this page proves
You can design the system before you ship the product.
You can work across skills, MCP, notebooks, governance, and production.
You can explain the stack to both engineers and operators.
You can publish original, production-grade work without exposing internal IP.
The stack
1
Executable books
2
Live notebook apps
3
Governed agent workflows
4
Production release discipline
Project catalog
Skills + MCP

Agent Fabric

v1.0
Skills + MCP
Agent Fabric
v1.0
IntentSkill loaderTool contractResult

A governed capability layer that routes work through skills, tools, and audit boundaries instead of letting one model improvise everything.

MCPSkillsFastAPIPostgres

A governed capability layer that routes work through skills, tools, and audit boundaries instead of letting one model improvise everything.

Capability routing
Tool scoping
Human review gates
MCPSkillsFastAPI
Open
JupyterBook + MyST

Notebook Loom

v1.1
JupyterBook + MyST
Notebook Loom
v1.1
OutlineMySTSectionsBook

A publishable notebook studio that turns computational work into readable books, live demos, and reproducible operating notes.

JupyterBookMySTJupyterLabVoilà

A publishable notebook studio that turns computational work into readable books, live demos, and reproducible operating notes.

Executable docs
Live widgets
Published learning assets
JupyterBookMySTJupyterLab
Open
Data + AI governance

Governance Spine

v1.0
Data + AI governance
Governance Spine
v1.0
AssetOwnerPurposeRegistry

Controls for lineage, policy, release discipline, and evidence so AI operations stay safe when they move fast.

OpenLineagedbtGreat ExpectationsOPA

Controls for lineage, policy, release discipline, and evidence so AI operations stay safe when they move fast.

Lineage
Approvals
Rollback
OpenLineagedbtGreat Expectations
Open
Orchestration

Agent Mesh

v2.0
Orchestration
Agent Mesh
v2.0
RequestPlannerTask graphPlan

A multi-agent structure for planning, delegating, reviewing, and recovering without letting one model own every decision.

LangGraphLangChainLlamaIndexRedis

A multi-agent structure for planning, delegating, reviewing, and recovering without letting one model own every decision.

Delegated work
Structured handoff
Recovery paths
LangGraphLangChainLlamaIndex
Open
RAG + evaluation

Reasoning Ladder

v1.0
RAG + evaluation
Reasoning Ladder
v1.0
QuestionRetrieverContextAnswer

Retrieval, SQL, benchmarks, and recursive reasoning patterns turned into repeatable engineering work instead of one-off prompt tricks.

SQLRAGPyTorchscikit-learn

Retrieval, SQL, benchmarks, and recursive reasoning patterns turned into repeatable engineering work instead of one-off prompt tricks.

Evidence first
Repeatable tests
Explainable outputs
SQLRAGPyTorch
Open
Voice + presence

Voice Continuity

v1.0
Voice + presence
Voice Continuity
v1.0
VoiceTranscribeIntentTask

A voice-to-workflow layer that turns spoken intent into coordinated execution and keeps the persona consistent across terminals and tools.

Open-source STTOpen-source TTSAudio pipelineTranscript memory

A voice-to-workflow layer that turns spoken intent into coordinated execution and keeps the persona consistent across terminals and tools.

Voice capture
Persona consistency
Transcript memory
Open-source STTOpen-source TTSAudio pipeline
Open
Production readiness

Release Train

v1.0
Production readiness
Release Train
v1.0
CodeBuildCompileArtifact

Build, test, verify, and roll back without production impact. This is the discipline that keeps the platform ship-shaped.

PlaywrightJestHealth probesCanary checks

Build, test, verify, and roll back without production impact. This is the discipline that keeps the platform ship-shaped.

No-regression gates
Reversible moves
Deployment evidence
PlaywrightJestHealth probes
Open
Llewellyn's Projects