Design & interfacesExplore a preview
Design System Studio
Six skills for turning a product need into a coherent interface: UX framing, tokens, accessible components, landing narrative and visual verification.
€39.00Explore this resource
The marketplaceA head start.
A head start.
For your projects.
From your first lines of code to product decisions. Free starters for experiments and packs to structure what comes next. Explore each collection at your own pace.
My library
2 resources
Design & interfaces
Visual foundations for building consistent interfaces.
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- Design & interfaces
Interface Essentials
An original HTML and CSS starting point: a mauve palette, responsive grid, cards and buttons with visible keyboard focus.
3 resources
Security
Methods and review checkpoints for the web, AI and operations.
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SecurityExplore a previewOperations Security Studio
Six skills for supply-chain trust, containers, secret handling, migrations, incident triage and restoration evidence, with an offline integrity checker.
€49.00Explore this resource
SecurityExplore a previewAI Security Studio
Six defensive skills for instruction boundaries, tool authority, RAG isolation, abuse evaluations, data minimization and model gateway policy.
€69.00Explore this resource
SecurityExplore a previewWeb Security Studio
Seven security skills combining focused web reviews with an authorized pentest workflow for web, API, mobile, desktop, backend, cloud and AI applications.
€59.00Explore this resource
1 resource
Product workflows
An explicit workflow from scoping to a reviewed change.
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Product workflowsExplore a previewVibe Coding Workflow
Eight skills for moving from an idea to a verifiable release: specification, architecture, a working slice, tests, refactoring, review and operational feedback.
€79.00Explore this resource
1 resource
SaaS & AI
Connect product journeys to access, data and AI use cases.
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SaaS & AIExplore a previewSaaS AI Workflow
Eight skills for designing AI SaaS boundaries: tenants, authorisation, billing, quotas, asynchronous jobs, onboarding, evaluation and recovery.
€129.00Explore this resource
1 resource
Collections
Complementary resources for preparing multiple project stages.
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CollectionsExplore a previewStudio Workflow Suite
All six Stellarr packs: 41 skills for design, security, authorised pentesting and application delivery with your coding assistants.
€249.00Explore this resource
4 resources
Artificial intelligence
Train, search, classify and evaluate with small runnable projects.
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Artificial intelligenceAI response evaluation bench
Compare responses against references, check explicit constraints and optionally connect a local Ollama server.
Artificial intelligenceLocal document search
Index text and Markdown documents, then find useful passages with TF-IDF and no remote service.
Artificial intelligenceTrainable text classifier
Build a Naive Bayes classifier, train it on your categories and measure results on separate examples.
Artificial intelligenceTiny language network
Train a small character neural network, inspect its loss and generate text locally with NumPy.
4 resources
Rust & Go
Explore APIs, commands and processing with readable foundations.
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Rust & GoGo Durable Worker
A persistent local Go queue with leases, delayed retries and terminal states. A text handler demonstrates the full lifecycle without external services.
Rust & GoGo JSON API
A Go JSON API with token authentication, pagination, ETag versions and graceful shutdown. Tasks stay in memory and tests cover concurrent access.
Rust & GoRust Local HTTP API
A local Rust API with health checks and an in-memory notes CRUD tested over real sockets. An educational foundation with deliberately limited HTTP support.
Rust & GoRust Text CLI
A Rust tool for line and word counts, Unicode text search and JSON output, with no application dependencies.
3 resources
Web & APIs
Interfaces and HTTP exchanges for trying real interactions.
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Web & APIsOrigin accessible web starter
An original responsive HTML/CSS/JavaScript interface with keyboard navigation, a native dialog, disclosure sections and light, dark and system themes.
Web & APIsNode SSE stream
A server-sent event stream with a progress interface, client cancellation, heartbeats and bounded handling of slow connections, without a framework.
Web & APIsSigned Node webhooks
A Node.js webhook receiver with HMAC signatures, raw-body verification, bounded replay protection and local tests without runtime dependencies.
1 resource
Data & automation
Prepare data and tasks before adding more automation.
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Data & automationCSV quality checks
A local Python tool that checks columns, types, uniqueness and constraints, then produces a JSON report without copying cell contents.