MDB-Engine Runtime

Runtime Demo Collection

Interactive demos showcasing the capabilities of the mdb-engine framework — from cognitive memory to graph-powered knowledge retrieval.

Member Berries

Cognitive memory showcase: Ebbinghaus decay, flashbulb memory, GraphRAG, bucket isolation, conflict detection, cold storage, and memory analytics.

Memory GraphRAG AI
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Vector Hacking

Can an LLM reverse-engineer text from its embedding vector? Watch Gemini try to crack OpenAI embeddings in real-time using iterative guess-and-check.

Embeddings Voyage AI Security
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Why MongoDB

How MongoDB quietly built the ultimate AI platform. From the JSON epiphany through the ecosystem, Atlas, AI memory, to the vault. Press Play and let the story unfold.

Experience Story AI
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mdb-embedded Engine

Local-first MongoDB engine powered by WiredTiger B-Trees. Full MQL queries, aggregation pipelines, index management, and bidirectional sync to Atlas — all running in-process with zero network.

WiredTiger Sync Embedded
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PWA Icon Generator

Describe an app icon, get a complete PWA icon pack — every size, maskable variants, manifest snippet, and HTML headers — generated by Gemini Nano Banana 2 and packaged in your browser.

Gemini Image Gen PWA
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Prompt to Deck

Turn a short topic into a five-slide cinematic mini-lesson with speaker notes — Gemini structured JSON in the browser, then download a real .pptx.

Gemini JSON Schema PPTX
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Running the Table

Same loop, three substrates: a pool table, a neural net, and you. Watch a Q-learning agent learn pool physics from scratch — its dopamine pulse, its instincts crystallize — then hallucinate with full confidence the moment you push it past its training data.

Q-Learning RPE OOD
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INCU-Do

Hand the coach-model a task you can't start. It hands back four reframes — Interest, Novelty, Challenge, Urgency — each one independently actionable. Pick the lever that lights up, then go.

Gemini INCU ADHD
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Self-Attention

Watch a sentence become its own context. Type any phrase and see the N×N gaze matrix, the √d_k scaling, and the softmax that turns 'cat' into a weighted blend of every other word in the sentence.

Transformers Attention Q·K·V
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Social Dilemma

Your feed is a mirror of you. A live REINFORCE-with-baseline simulator that proves the algorithm is amoral — it amplifies whatever scalar your clicks produce. Drag λ to retrain the simulated human and watch the same gradient build a depth chamber instead of an outrage chamber.

REINFORCE RLHF Lens Stack
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mdb-lucene · Beyond the Vector Database

Lucene proves the vector engine is commodity → therefore the only game left is what the database absorbs beyond the engine. The macro-strategy in one page: the five state types an agent reads on every turn, the 5+1 MQL punchline, the unbroken thread from 2009 to 2026, and an honest appendix on when a vector database really is the right answer.

Atlas $vectorSearch Lucene HNSW
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Oblivious YouTube

A distraction-free YouTube client. Search, follow channels, build playlists, and watch — with workspaces that scope your feed to just the channels and topics you want. All preferences stay local in your browser.

YouTube yt-dlp Local-first
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Director's Cut Music Studio

A guided producer studio for Google's Lyria 3 Pro. Mix genres, dial in mood, tempo and vocals, and drag an [mm:ss] timeline — then the model renders the whole track (and lyrics) from scratch. Publish to a shareable, full-text-searchable gallery backed by MongoDB GridFS + Atlas Search.

Lyria 3 Pro GridFS Atlas Search
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