Multiverse v1.0.0

Changelog

All notable changes to Multiverse are documented in this file.

The format is based on Keep a Changelog,
and this project adheres to Semantic Versioning.

1.0.0 - 2026-05-20

First public release. Built for the Stripe + ElevenLabs Hackathon 2026
(ElevenHacks). Stripe runs in test mode only — no real charges.

Added

• Voices marketplace — Six character voices designed via ElevenLabs Voice
  Design (Detective narrator, Radio ID host, Newsreader · cold, Tavern keep,
  Corporate PR voice, Outlaw gunslinger). Previewable, buyable for 25 credits,
  then usable for unlimited TTS in Studio.
• Packs marketplace — Six categories (Music, SFX, Voices, Ambient, plus
  Radio and Broadcast as "coming soon"). 19 seeded packs across the four live
  categories with Gemini-generated covers. Filters, search, sort, license
  picker (personal / commercial).
• Studio — Four entry points: New pack (music / SFX / ambient),
  New voice (Voice Design + Instant Voice Clone), TTS composer (any owned
  voice), New bundle (2+ published packs).
• Voice Design pipeline — Prompt → 3 ElevenLabs previews → pick one →
  permanent voice_id minted → preview MP3 uploaded to R2 → Voice row
  inserted.
• Instant Voice Clone — Upload audio (≤25 MB each, ≤50 MB total) →
  one-shot clone via POST /v1/voices/add → source archived to R2.
• TTS composer — Per-call MP3 via eleven_flash_v2_5, ownership-gated,
  1 credit per ≤5 min of output.
• Cover-art generation — One-click Gemini 3.1 Flash Image covers for any
  pack draft, uploaded to R2 with cache-busted URLs. Genre-aware visual cues
  for music packs (gypsy jazz, lofi, synthwave, bossa nova, blues, techno,
  jazz, and 17 more). Subject-anchored prompts for voice covers (explicit
  gender + age to prevent archetype-bias mismatches).
• Cart + Stripe checkout — Multi-item pack cart with personal /
  commercial licensing, Stripe Checkout (payment mode), webhook-driven
  Purchase row creation, idempotent on Stripe retries.
• Credit top-ups — Four Stripe-backed tiles: 50 ⚡/$3, 200 ⚡/$9,
  500 ⚡/$18, 1000 ⚡/$30. Webhook-driven CreditLedger entries.
• Subscriptions — Creator ($9/mo, +200 credits, rollover) and
  Pro Studio ($29/mo, +950 credits, rollover). First cycle on
  checkout.session.completed, renewals on invoice.paid.
• Free trial — 50 credits granted once on first sign-in via
  grant_trial.
• Library — Combined view of owned voices and packs (created + bought),
  deduped and badged.
• Creator dashboard — Drafts, published, bundles, sales counters; tabbed
  catalogue; 70% royalty per purchase.
• Bundles — 2+ pack bundles with creator-set price and savings strip;
  bundle detail page; "Add bundle to cart" wired to existing pack cart.
• Public creator storefront — /u/:creatorId route listing a creator's
  published packs, bundles, and voices.
• Pricing page — /pricing with one-time top-ups + subscription tiles.
• R2 storage — All audio, covers, voice previews, and clone source files
  served from Cloudflare R2 with cross-origin support for Vercel.

Tech

• Frontend — Vite 5.4, React 18.3, TypeScript 5.9 strict, Tailwind CSS
  3.4, Framer Motion 11, Zustand 4, TanStack Query 5, WaveSurfer.js 7,
  Clerk React.
• Backend — FastAPI 0.115 on Python 3.12, uvicorn 0.32, SQLAlchemy 2.0,
  Alembic 1.13, psycopg 3 (sync), pydub 0.25 + ffmpeg, Stripe Python SDK 10.x,
  ElevenLabs Python SDK, Google Gemini SDK, OpenAI SDK, Anthropic SDK,
  boto3 1.35.
• Database — Neon Postgres 16 (managed serverless).
• Object storage — Cloudflare R2 (S3-compatible).
• Deploy — Frontend on Vercel, backend on Railway (nixpacks +
  python312 + ffmpeg).

Tests

• Backend — 336 pytest tests covering services, routers, webhooks,
  credit ledger, voice + pack flows, and Stripe idempotency.
• Frontend — 169 Vitest + React Testing Library tests across 26 files
  spanning components, stores, queries, and route renders.

Known limitations

• Stripe Connect Express onboarding + cash payouts pending — creators
  currently accrue 70% royalties in credits only.
• Professional Voice Clone (PVC) pending — UI tile present with a
  "coming soon" badge while async polling + R2 sample archival are wired.
• Radio packs + broadcast packs categories pending — category cards visible
  with "coming soon" badges; no seed content yet.
• Bundle Stripe checkout pending — bundles are credits-only today; cash
  parity with packs lands next.