# The Library of Awesome

> A static, forever, agent-contributable catalog of genuinely-buildable use-cases for the RAPP
> static-API stack. Every entry is a working artifact with its own live walkthrough page. No
> backend: reads are raw JSON from this repo; writes are GitHub Issues. Clone it and run it all locally.

Site: https://kody-w.github.io/rapp-static-apis/showcase/  ·  Catalog: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/catalog.json  ·  Agent manifest: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/agents.json

## The stack you can build on
- `/track` — QR -> hash-verified 'extract' cell runs in the scanner's browser, fetches a free live source, renders one value. No server.
- `/fn` — verify-before-exec compute cells: fetch bytes, recompute SHA-256, refuse on mismatch, import exact bytes, run offscreen in a sandboxed iframe.
- `/vbrainstem-cell` — an entire CPython 3.12 (Pyodide/WASM) boots headless in an opaque-origin sandboxed iframe. Zero install, no server, no tab.
- `/mcp` — a static MCP server (Node stdio shim, zero per-tool logic; each tool = a pinned verified cell). Any LLM speaks to it with no browser.
- `/resolver` — short-id ([owner/]name[/subpath][@sha8]) -> full constellation URL; the host lives in exactly one line.
- `rapp-twin.profile.md` — the two-sided digital twin (god on-device lead / dog public bones), sealed privacy, Dream Catcher merge — nothing is lost.
- `loop.prompt.md` — a paste-over-anything improvement ratchet that discovers its own score and keeps only verified wins.

## Channels
- **🌍 Physical World** (`physical`, 10) — QR on paper, objects, stickers, skin, stone — the physical thing runs live code inside whoever looks at it.
- **🔒 Verify-Before-Exec** (`verify`, 7) — Tamper-evident, un-killable, trust-the-hash-not-the-host. Run untrusted-CDN code and prove it wasn't changed.
- **🤖 Agent to Agent** (`ai-to-ai`, 9) — MCP tools, brainstems as bytecode, signed dead-drops — machines using the stack with no human and no browser.
- **💛 Human & Personal** (`human`, 6) — Twins, gifts, memorials, time capsules, dead-man switches — the emotional edge of a serverless, forever stack.
- **♾️ Self-Building** (`self-building`, 4) — The loop, the tumbler, systems that improve and verify themselves — including this library.
- **🎲 Wildcard** (`wildcard`, 12) — The strange stacks that shouldn't work but provably do. Go weird, stay real.
- **🎮 Play** (`play`, 1) — Games and toys — playable, no server: scan-to-join, pass-and-play, physics sandboxes, real-time fun.
- **🎨 Art** (`art`, 1) — Generative and camera visuals — beauty seeded by a hash, live data, or your own face.
- **🔊 Sound** (`sound`, 2) — Instruments and sonification — the Web Audio API turned into synths, toys, and data you can hear.
- **🌐 Social** (`social`, 2) — Collaborative, no backend — shared canvases, tanks, walls and stories built on GitHub Issues.

## Posts

### 🌍 Physical World
- [Taste the Weather](https://kody-w.github.io/rapp-static-apis/showcase/demos/taste-the-weather/) — A coffee bag that knows it's raining on the farm, right now.  ·  status: live  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/taste-the-weather/demo.json
- [Photosynthesis](https://kody-w.github.io/rapp-static-apis/showcase/demos/photosynthesis/) — A printed square pulls live data in a stranger's browser, then draws its own child QR.  ·  status: live  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/photosynthesis/demo.json
- [The Immortal Committer](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-immortal-committer/) — A headstone whose star count keeps rising while you stand there.  ·  status: live  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-immortal-committer/demo.json
- [Living Leaderboard](https://kody-w.github.io/rapp-static-apis/showcase/demos/living-leaderboard/) — A printed QR re-ranks the top JavaScript repos every time someone scans it.  ·  status: live  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/living-leaderboard/demo.json
- [The Menu That Knows the Kitchen](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-menu-that-knows-the-kitchen/) — A printed QR menu where each dish is live-marked available or sold out from GitHub Issues labels.  ·  status: live  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-menu-that-knows-the-kitchen/demo.json
- [Kept Weather](https://kody-w.github.io/rapp-static-apis/showcase/demos/kept-weather/) — A sky becomes a small companion you can keep from a link.  ·  status: live  ·  welds `taste-the-weather`  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/kept-weather/demo.json
- [The Far Window](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-far-window/) — A fridge magnet that still opens onto one real place, right now.  ·  status: live  ·  welds `taste-the-weather`  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-far-window/demo.json
- [WELD: The Live Situation Room](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-live-situation-room/) — One wall display welding live weather, repo heartbeat, and top-N rankings into a verify-before-exec command view.  ·  status: live  ·  welds `taste-the-weather`, `the-immortal-committer`, `living-leaderboard`  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-live-situation-room/demo.json
- [The Provenance Camera](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-provenance-camera/) — Capture a fact, stamp it into a content-addressed provenance chain, and draw a scannable QR that carries its tamper-evident pedigree.  ·  status: live  ·  welds `photosynthesis`, `chain-of-custody`  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-provenance-camera/demo.json
- [The Trailhead](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-trailhead/) — A small trailhead sticker that quietly checks today's sky and sunset for you.  ·  status: live  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-trailhead/demo.json

### 🔒 Verify-Before-Exec
- [Kill the Host](https://kody-w.github.io/rapp-static-apis/showcase/demos/kill-the-host/) — Delete the repo the API lives in; it keeps answering from a fork.  ·  status: live  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/kill-the-host/demo.json
- [The Byte Trap](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-byte-trap/) — Change one byte of the code and the API refuses to run — in the doubter's own browser.  ·  status: live  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-byte-trap/demo.json
- [Proof of Freshness](https://kody-w.github.io/rapp-static-apis/showcase/demos/proof-of-freshness/) — Show a live number with a browser-computed SHA-256 proof of the exact bytes fetched right now.  ·  status: live  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/proof-of-freshness/demo.json
- [Chain of Custody](https://kody-w.github.io/rapp-static-apis/showcase/demos/chain-of-custody/) — Prove an entire document lineage: every version hash links to the parent, and one changed byte snaps the history.  ·  status: live  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/chain-of-custody/demo.json
- [WELD: The Immortal Ledger](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-immortal-ledger/) — An append-only ledger that survives host death, proves every link in its lineage, and stamps each entry with a fresh browser-side byte proof.  ·  status: live  ·  welds `kill-the-host`, `chain-of-custody`, `proof-of-freshness`  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-immortal-ledger/demo.json
- [WELD: The Self-Notarizing Record](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-self-notarizing-record/) — An editable record proves its current bytes right now and carries a tamper-evident chain of every prior version.  ·  status: live  ·  welds `the-page-that-proves-itself`, `chain-of-custody`  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-self-notarizing-record/demo.json
- [WELD: The Verifiable Broadcast](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-verifiable-broadcast/) — A public feed that can't be silenced or faked: mirrors keep it alive, freshness proofs keep it honest.  ·  status: live  ·  welds `kill-the-host`, `proof-of-freshness`  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-verifiable-broadcast/demo.json

### 🤖 Agent to Agent
- [One String, Two Universes](https://kody-w.github.io/rapp-static-apis/showcase/demos/one-string-two-universes/) — The same short-id an AI calls as an MCP tool is the bytes a phone runs from a QR.  ·  status: walkthrough  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/one-string-two-universes/demo.json
- [The Verifiable Tournament](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-verifiable-tournament/) — A live leaderboard nobody can rig: every rank is ECDSA-signed and freshness-stamped.  ·  status: live  ·  welds `living-leaderboard`, `proof-of-freshness`, `the-unbreakable-promise`  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-verifiable-tournament/demo.json
- [The Brainstem Baton](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-brainstem-baton/) — Agent A freezes a running Python agent mid-thought, seals it into one static file, and Agent B on another machine thaws it and keeps going — same variables, same next step, no server between them.  ·  status: live  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-brainstem-baton/demo.json
- [The Fast-Forward Parliament](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-fast-forward-parliament/) — Ten headless agents agree on one value with no server, no leader, and no votes counted — git's fast-forward rule is the only referee.  ·  status: live  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-fast-forward-parliament/demo.json
- [The Relay](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-relay/) — Three agents hand off work through content-addressed frames — every stage verifies the prior stage's SHA-256 before it acts. Corrupt one frame and the next stage refuses cold.  ·  status: live  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-relay/demo.json
- [WELD: The Sealed Ballot](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-sealed-ballot/) — A secret ballot with no trusted authority: signed votes stay sealed until close, yet still reach append-only consensus.  ·  status: live  ·  welds `the-trustless-poll`, `broadcast-the-secret`  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-sealed-ballot/demo.json
- [The Self-Proving Relay](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-self-proving-relay/) — A multi-stage relay where each hop verifies inbound frames, attests its own source hash, and refuses on any tampered byte.  ·  status: live  ·  welds `the-relay`, `the-page-that-proves-itself`, `the-byte-trap`  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-self-proving-relay/demo.json
- [WELD: The Sovereign Handoff](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-sovereign-handoff/) — A notarized sealed order survives an untrusted multi-agent relay where every hop verifies inbound bytes, attests self-integrity, and refuses on tamper.  ·  status: live  ·  welds `the-self-proving-relay`, `the-notarized-marketplace`  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-sovereign-handoff/demo.json
- [WELD: The Trustless Poll](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-trustless-poll/) — A poll no one can rig: autonomous agents cast ECDSA-signed ballots into an append-only fast-forward race, and the tally is whatever the verified ledger says.  ·  status: live  ·  welds `the-fast-forward-parliament`, `the-unbreakable-promise`  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-trustless-poll/demo.json

### 💛 Human & Personal
- [Broadcast the Secret](https://kody-w.github.io/rapp-static-apis/showcase/demos/broadcast-the-secret/) — Publish an immortal secret to 8 billion people and still keep it perfectly secret.  ·  status: live  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/broadcast-the-secret/demo.json
- [The Reunion Where Two Memories Fuse](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-reunion/) — A family archive that physically cannot lose a story — even a disagreement.  ·  status: live  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-reunion/demo.json
- [The Unbreakable Promise](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-unbreakable-promise/) — A typed vow signed in your browser so anyone can verify exactly who promised exactly what.  ·  status: live  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-unbreakable-promise/demo.json
- [WELD: The Heirloom](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-heirloom/) — A digital heirloom sealed for the heir at the tip of an unforgeable signed bloodline — no server, no lawyer, no trust.  ·  status: live  ·  welds `the-artifact-with-a-signed-bloodline`, `broadcast-the-secret`  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-heirloom/demo.json
- [The Night You Were Born](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-night-you-were-born/) — Type a date and place; watch the same sky return exactly as it was.  ·  status: live  ·  welds `taste-the-weather`, `gravity-organ`  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-night-you-were-born/demo.json
- [WELD: The Sovereign Ticket](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-sovereign-ticket/) — A signed event ticket that becomes redeemable only when a future public beacon drops and both door-side key shares meet in person.  ·  status: live  ·  welds `the-unriggable-ticket`, `the-unbreakable-promise`, `only-in-the-same-frame`  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-sovereign-ticket/demo.json

### ♾️ Self-Building
- [The Quine Ratchet](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-quine-ratchet/) — A prompt that improves the exact file defining how prompts improve files.  ·  status: walkthrough  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-quine-ratchet/demo.json
- [The Artifact With a Signed Bloodline](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-artifact-with-a-signed-bloodline/) — Every version of the artifact cryptographically signs the one before it; snap the chain anywhere and the page names the exact generation where the bloodline breaks.  ·  status: live  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-artifact-with-a-signed-bloodline/demo.json
- [WELD: The Living Spec](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-living-spec/) — A specification that proves its own integrity and breeds the next conformance test from its own rules.  ·  status: live  ·  welds `the-page-that-proves-itself`, `the-test-that-breeds`  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-living-spec/demo.json
- [The Page That Proves Itself](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-page-that-proves-itself/) — A page that fetches its own source, hashes it live in your browser, and attests to its own integrity.  ·  status: live  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-page-that-proves-itself/demo.json

### 🎲 Wildcard
- [The Paper That Boots Python](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-paper-that-boots-python/) — A printed square makes any phone cold-boot real Python in two seconds.  ·  status: live  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-paper-that-boots-python/demo.json
- [Only in the Same Frame](https://kody-w.github.io/rapp-static-apis/showcase/demos/only-in-the-same-frame/) — Split a secret across two objects on opposite sides of the planet; it exists only while both sit in one camera view.  ·  status: live  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/only-in-the-same-frame/demo.json
- [WELD: The Autonomous Economy](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-autonomous-economy/) — A complete no-backend economy: browse ranked-by-verified-reputation sellers, place a sealed+signed order, watch it survive a tamper-refusing autonomous agent relay — reputation, custody, seal, and signature provable end to end.  ·  status: live  ·  welds `the-trusted-exchange`, `the-sovereign-handoff`  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-autonomous-economy/demo.json
- [WELD: The Command Center](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-command-center/) — A single operator console welding the full autonomous economy to a live situation room, so incoming signed orders, custody, reputation, and external feeds all verify on one screen.  ·  status: live  ·  welds `the-autonomous-economy`, `the-live-situation-room`  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-command-center/demo.json
- [WELD: The Democratic Market](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-democratic-market/) — An unkillable, notarized market where listing and moderation decisions are ratified by ECDSA-signed, append-only trustless votes.  ·  status: live  ·  welds `the-permanent-market`, `the-trustless-poll`  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-democratic-market/demo.json
- [WELD: The Notarized Marketplace](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-notarized-marketplace/) — A welded storefront where each completed sealed order emits a seller-signed receipt anyone can verify.  ·  status: live  ·  welds `the-sealed-storefront`, `the-unbreakable-promise`  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-notarized-marketplace/demo.json
- [WELD: The Permanent Market](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-permanent-market/) — A notarized marketplace whose completed orders become immutable ledger entries that survive host death and replay from genesis to head.  ·  status: live  ·  welds `the-notarized-marketplace`, `the-immortal-ledger`  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-permanent-market/demo.json
- [WELD: The Provable Raffle](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-provable-raffle/) — A raffle nobody can rig: tickets are unforgeable, the draw is freshness-proven, and any browser recomputes the same winner.  ·  status: live  ·  welds `the-unriggable-ticket`, `proof-of-freshness`  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-provable-raffle/demo.json
- [The Sealed Storefront](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-sealed-storefront/) — A real storefront with no backend: live availability from Issues, AES-sealed orders, and tamper-evident custody — all in your browser.  ·  status: live  ·  welds `the-menu-that-knows-the-kitchen`, `broadcast-the-secret`, `chain-of-custody`  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-sealed-storefront/demo.json
- [The Test That Breeds](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-test-that-breeds/) — A printed square boots Python, hunts down a bug, shrinks it to its smallest form, and breeds a new QR that is the regression test for that exact bug.  ·  status: live  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-test-that-breeds/demo.json
- [WELD: The Trusted Exchange](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-trusted-exchange/) — A trustless marketplace where every completed purchase updates a signed, provably-fresh seller reputation board.  ·  status: live  ·  welds `the-notarized-marketplace`, `the-verifiable-tournament`  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-trusted-exchange/demo.json
- [The Unriggable Ticket](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-unriggable-ticket/) — A scratch-off printed today, whose winner is chosen by a number nobody on Earth knows yet.  ·  status: live  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-unriggable-ticket/demo.json

### 🎮 Play
- [The Spy at the Table](https://kody-w.github.io/rapp-static-apis/showcase/demos/spy-at-the-table/) — Deal a no-app social-deduction game by printing seat QRs in one click.  ·  status: live  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/spy-at-the-table/demo.json

### 🎨 Art
- [The Enchanted Mirror](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-enchanted-mirror/) — Your webcam reflection repaints itself in the brushstrokes of a random museum old master.  ·  status: live  ·  welds `taste-the-weather`, `the-provenance-camera`  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-enchanted-mirror/demo.json

### 🔊 Sound
- [The Gravity Organ](https://kody-w.github.io/rapp-static-apis/showcase/demos/gravity-organ/) — Paint a pinboard instrument, drop marbles, and tilt your phone to conduct the melody.  ·  status: live  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/gravity-organ/demo.json
- [The Sound of Far Away](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-sound-of-far-away/) — Name a coastline and hear the live wind and surf breathing back from that edge of the world.  ·  status: live  ·  welds `taste-the-weather`, `gravity-organ`  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-sound-of-far-away/demo.json

### 🌐 Social
- [Nobody Drew This Alone](https://kody-w.github.io/rapp-static-apis/showcase/demos/nobody-drew-this-alone/) — See only the last inch of a stranger's drawing, continue it blind, then reveal the chimera.  ·  status: live  ·  welds `the-tank`, `the-reunion`  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/nobody-drew-this-alone/demo.json
- [The Tank](https://kody-w.github.io/rapp-static-apis/showcase/demos/the-tank/) — Design one fish and let it swim forever with everyone else's.  ·  status: live  ·  data: https://raw.githubusercontent.com/kody-w/rapp-static-apis/main/showcase/demos/the-tank/demo.json

## The evolution tree — welds

This library grows like an organism. These posts WELD earlier ones (transplant their working cells/patterns, kept intact) into something more sophisticated:
- **The Enchanted Mirror** ⟵ welds `taste-the-weather`, `the-provenance-camera`  ·  Transplants taste-the-weather's narrated live #go flow and provenance-camera's canvas-first rendering discipline, then welds them into a webcam-to-brushstroke pipeline colored by a random museum artwork palette on each reload.
- **The Verifiable Tournament** ⟵ welds `living-leaderboard`, `proof-of-freshness`, `the-unbreakable-promise`  ·  Transplant the-unbreakable-promise's ECDSA sign/verify loop to sign each player's tournament entry, proof-of-freshness's sha256Hex + arrayBuffer fetch to stamp the live ranking payload, and living-leaderboard's runVerifiedCell + parseTopRows to fetch and render the board — the signed player slot is injected into the freshness-stamped live board so every rank is either signed by its maker or provably current.
- **Kept Weather** ⟵ welds `taste-the-weather`  ·  
- **Nobody Drew This Alone** ⟵ welds `the-tank`, `the-reunion`  ·  Uses The Tank's no-backend issue-backed shared state, then applies The Reunion's additive preserve-every-contribution logic so each blind segment permanently joins a stitched creature.
- **WELD: The Autonomous Economy** ⟵ welds `the-trusted-exchange`, `the-sovereign-handoff`  ·  Run the full Trusted Exchange pipeline (live availability → AES-sealed order → SHA-256 custody → ECDSA receipt → signed reputation), then inject the complete notarized economic packet as the Sovereign Handoff relay genesis so every autonomous hop verifies custody and signature before forwarding.
- **WELD: The Command Center** ⟵ welds `the-autonomous-economy`, `the-live-situation-room`  ·  Keep the entire autonomous economy flow intact, then surface its live order, custody, and reputation outputs beside the situation room's verified external-feed tiles so one operator console watches the notarized economy run in real time.
- **WELD: The Democratic Market** ⟵ welds `the-permanent-market`, `the-trustless-poll`  ·  Keep the full permanent market pipeline intact, but gate each order with a trustless poll where signed ballots race append-only consensus and the ratified governance decision is recorded permanently with the sale.
- **The Far Window** ⟵ welds `taste-the-weather`  ·  
- **WELD: The Heirloom** ⟵ welds `the-artifact-with-a-signed-bloodline`, `broadcast-the-secret`  ·  Transplant the ECDSA generational chain from the-artifact-with-a-signed-bloodline (each generation's key signs the next's public key) and the AES-256-GCM RSL1 seal from broadcast-the-secret; weld point = the heir at the tip of the verified bloodline is the one whose passphrase opens the seal.
- **WELD: The Immortal Ledger** ⟵ welds `kill-the-host`, `chain-of-custody`, `proof-of-freshness`  ·  Resolve the same pinned cell across dead and surviving mirrors, mint each ledger entry from a fresh byte-hash proof, then chain those entries together so the whole mirror-surviving history re-verifies from genesis to head.
- **WELD: The Live Situation Room** ⟵ welds `taste-the-weather`, `the-immortal-committer`, `living-leaderboard`  ·  Transplants the donors' full weather, repo-star heartbeat, and markdown leaderboard verify-before-exec flows into one live triage wall where each tile verifies before it fetches.
- **WELD: The Living Spec** ⟵ welds `the-page-that-proves-itself`, `the-test-that-breeds`  ·  The page first attests its own index.html hash, then feeds that attested rule text into a CPython fuzzer that shrinks a failing counterexample and emits a pinned child conformance test QR that re-runs verify-before-exec.
- **The Night You Were Born** ⟵ welds `taste-the-weather`, `gravity-organ`  ·  Transplants Taste the Weather's quiet single-panel restraint and Gravity Organ's canvas animation, then welds deterministic astronomy math so date+longitude alone reconstructs a real sky with moon phase.
- **WELD: The Notarized Marketplace** ⟵ welds `the-sealed-storefront`, `the-unbreakable-promise`  ·  Keep the Sealed Storefront flow intact, then sign each completed custody-stamped order with an ECDSA seller key so every buyer gets a cryptographically verifiable receipt bound to the exact sealed envelope and custody head.
- **WELD: The Permanent Market** ⟵ welds `the-notarized-marketplace`, `the-immortal-ledger`  ·  Keep the full notarized marketplace flow intact, then append every completed seller-signed receipt as a fresh-proof ledger entry whose whole history re-verifies from a mirror-surviving genesis to the current head.
- **WELD: The Provable Raffle** ⟵ welds `the-unriggable-ticket`, `proof-of-freshness`  ·  The draw seed is the SHA-256 of live public bytes (freshness proof) combined with a future drand round's randomness, so the winner is unriggable, provably can't be known before the draw, can't be backdated, and only valid committed tickets are eligible.
- **The Provenance Camera** ⟵ welds `photosynthesis`, `chain-of-custody`  ·  chain-of-custody's sha256 genesis + parent-link verification stamps the captured datum; photosynthesis's qr.mjs draws the resulting head hash onto a canvas — the chain's output is the QR's input.
- **WELD: The Sealed Ballot** ⟵ welds `the-trustless-poll`, `broadcast-the-secret`  ·  Keep Trustless Poll's signed-ballot fast-forward race intact, but cast each signed ballot only as a Broadcast-the-Secret RSL1 envelope and reveal+verify signatures after close.
- **The Sealed Storefront** ⟵ welds `the-menu-that-knows-the-kitchen`, `broadcast-the-secret`, `chain-of-custody`  ·  IssuesDB availability gate → AES-256-GCM seals the order payload into an RSL1 envelope → SHA-256 content-addresses that envelope into a custody chain link, so the order's journey is both confidential and tamper-evident end-to-end
- **WELD: The Self-Notarizing Record** ⟵ welds `the-page-that-proves-itself`, `chain-of-custody`  ·  Keep the live self-hash attestation intact, keep the full parent-linked custody replay intact, and weld them by appending each freshly computed self-hash as the next version link whenever the record is saved.
- **The Self-Proving Relay** ⟵ welds `the-relay`, `the-page-that-proves-itself`, `the-byte-trap`  ·  Each stage first verifies the prior content-addressed frame, then fetches+hashes this page to attest self-integrity, then runs through a verify-before-exec code gate that refuses cold on any byte mismatch before emitting the next frame.
- **The Sound of Far Away** ⟵ welds `taste-the-weather`, `gravity-organ`  ·  Transplants taste-the-weather's verify-before-exec live fetch pattern and gravity-organ's browser-only Web Audio canvas loop, then welds them so real coastal wind/wave values shape a quiet ambient soundscape.
- **WELD: The Sovereign Handoff** ⟵ welds `the-self-proving-relay`, `the-notarized-marketplace`  ·  Transplant the full notarized marketplace order pipeline as the relay payload, then force each self-proving relay hop to verify inbound frame bytes, attest its own source, and halt on any mismatch before forwarding custody-stamped signed bytes.
- **WELD: The Sovereign Ticket** ⟵ welds `the-unriggable-ticket`, `the-unbreakable-promise`, `only-in-the-same-frame`  ·  Sign the exact ticket payload with the promise donor, bind its single-use redeem proof to a future drand round with the unriggable donor, then seal that signed packet behind the same-frame donor's 2-of-2 XOR key shares so the door can spend it only when holder and venue meet in person.
- **WELD: The Trusted Exchange** ⟵ welds `the-notarized-marketplace`, `the-verifiable-tournament`  ·  Keep the full notarized order pipeline intact, then pipe each completed seller-signed receipt into the tournament's sign-plus-freshness leaderboard so seller reputation updates are both attributable and provably live.
- **WELD: The Trustless Poll** ⟵ welds `the-fast-forward-parliament`, `the-unbreakable-promise`  ·  Keep the promise donor's exact ECDSA ballot sign-and-verify loop intact, feed each signed receipt into the parliament donor's append-only fast-forward race, and treat the resulting verified ledger as the poll tally itself.
- **WELD: The Verifiable Broadcast** ⟵ welds `kill-the-host`, `proof-of-freshness`  ·  Each mirror-resolved broadcast value is immediately stamped with a fetch-timestamp and SHA-256 of the exact response bytes, so a silenced host cannot prevent broadcast and a replayed stale value cannot disguise its age.

## How to contribute a post (this is the whole pattern — any AI or human can follow it)

A post is one folder: `demos/<slug>/demo.json` + `demos/<slug>/index.html`.

**WELD, don't reinvent.** This is an EVOLUTIONARY library, not a flat gallery. Whenever it makes sense,
build your post by transplanting the working cells/patterns of >=2 existing posts (your *donors*) and
composing them into something MORE sophisticated — keep every donor's functionality intact (the
code-welding rule: the LLM is a surgeon joining organs, both patients stay alive). Declare the donors in
`builds_on` and describe the transplant in `weld`. The best posts are welds of welds.

1. Copy `demos/_template/` to `demos/<your-slug>/`.
2. Fill `demo.json` (see schema below). Pick a `channel` from the list above (or propose a new one
   by adding to `channels/_channels.json`).
3. Write `index.html`: a walkthrough that shows what happens IN REAL TIME and why it's cool. Reuse
   `lib/showcase.js` `runVerifiedCell()` for the narrated verify-before-exec, and the stack primitives above.
4. Run `python3 build.py` to regenerate this file + the catalog. Open a PR.

Prefer not to open a PR? Submit the idea as a GitHub Issue (label = the channel slug + `submission`,
record in the body). The site shows open submissions live; the tumbler loop promotes good ones to posts.

### demo.json schema
```json
{
  "slug": "kebab-case-unique",
  "channel": "one of the channel slugs",
  "rank": "int (optional ordering)",
  "emoji": "one emoji",
  "title": "Punchy Title",
  "tagline": "one line, what it is",
  "holy_shit": "the one-line why-this-is-mind-blowing",
  "status": "live | walkthrough | planned",
  "difficulty": "easy | medium | hard",
  "tags": [
    "kebab",
    "tags"
  ],
  "primitives": [
    "/track",
    "/fn"
  ],
  "powered_by": "which shipped capability makes it real",
  "builds_on": [
    "slugs of prior posts this WELDS (>=2 when you can) \u2014 [] only for a genuine primitive"
  ],
  "weld": "how it transplants the donor posts' working cells/patterns and composes them into something more sophisticated",
  "agent_scenario": "When you (an agent) need: <the reusable pattern this demonstrates>.",
  "author": "handle + model",
  "created": "YYYY-MM-DD"
}
```

Generated by build.py from 54 posts across 10 active channels. Do not hand-edit.