Changelog

A running log of what we've built. The Baseline below is everything standing as of the first digest; each Weekly entry after it captures what shipped, what got fixed, and what changed that week. Newest week on top.

---

Baseline — what we've built so far (as of 2026-05-31)

The product. tinycorp.ai is a paper-trading quant marketplace + leaderboard for prediction markets (Kalshi, Polymarket, Manifold). Anyone can build a rules-based "bot," watch it trade live markets with no real money, follow the ones that perform, and (if a creator lists it) unlock the rules. Everything is flat $5/trade so performance reflects skill, not bankroll.

Core surfaces

• Marketplace (/marketplace) — browsable catalog of *listed* strategies with real performance, sortable.
• Leaderboard (/leaderboard) — every qualifying bot ranked by Sharpe (risk-adjusted return per $5 bet), with Follow buttons and a "not for sale" tag on private bots. Top-3 podium.
• Builder (/builder) — visual + JSON strategy builder with a live "markets matching now" preview.
• Strategy detail (/strategy/<slug>) — performance, plain-English rules, full config (when entitled), trade feed, version history, owner listing toggle.
• Compare (/compare) — side-by-side of up to 3 strategies (real KPIs, metrics table, P&L overlay).
• My Quants / Library / Positions / Activity / Following / Creator profiles — the logged-in surfaces.
• Tools (/tools) — tool hub; flagship is WX Lookup (public preview + Pro multi-station view) for weather markets.

Engine + strategy grammar (the "DSL")

• Entry signals: price band, liquidity, timing, momentum (ya_change_*), volume-spike, title match.
• External anchors: wx_anchor, nws_anchor, crypto_anchor, eco_anchor (FOMC/CPI/NFP), injury_anchor (ESPN), lineup_anchor (MLB).
• Flat $5 sizing, max_concurrent, exit-at-expiry, YES/NO sides.
• Backtester — replays a config against captured price history (~33+ days and growing) with the same exit math as the live engine; flags signals it can't yet replay rather than skipping them silently.
• Strategy versioning — v1→retire / v2→active, per-version stats, lifetime vs current scope.

WX Lookup (weather tooling)

• Real NWS/FAA feeds; forecast-trail surfacing, SPECI capture, Kalshi consensus chip, a "governing number" on every panel, monotonic lock ratchet. Public tool + Pro multi-station + a v2 design running on the .138 LAN box.

Reference / education

• /learn, /how-it-works, /signals, /backtesting, and /docs (the full strategy-grammar spec + a "How we measure performance" metric glossary).

Two-surface social/marketplace model

• Leaderboard/social = always public (performance + @handle + Follow). Marketplace = opt-in per bot (marketplace_enabled, default private). Pro does NOT override a private bot — the creator controls whether rules are sold.
• Creator-following (user_creator_follows) + a real /following feed of followed creators and their bots.

Trust / data honesty

• Swept a 42-item audit punch-list: every hardcoded/fabricated/placeholder value was wired to real API data or removed/relabeled honestly, across marketplace, leaderboard, /tools, /start, /live, /compare, /creators, /activity, WX landing, and the /build pages.
• Real creator identity (handles + avatars). Welcome email on signup; magic-link auth.

---

Weekly digests

Week of 2026-05-26 → 05-31

Shipped

• Two-surface social/marketplace model — marketplace_enabled flag (default private); entitlement rewritten so Pro can't unlock an unlisted bot (enforced on the page *and* the API); creator-following endpoints; /following creator-feed; creator-profile Follow button; owner listing toggle; marketplace filtered to listed bots; leaderboard Follow buttons + "not for sale" tags.
• Max drawdown surfaced everywhere (marketplace cards, leaderboard column, strategy detail) — computed in engine.perf_stats as the worst peak-to-trough drop of the cumulative-P&L curve.
• /docs#metrics — a "How we measure performance" glossary defining every stat exactly as computed (P&L, EV/trade, win rate, Sharpe, Max DD, etc.).
• Docs added to the site-wide navigation.

Fixed

• Full fake-data audit sweep — /leaderboard "428/18 pages" footer, /tools "alive brackets" + roadmap vote counts, /start "428 bots / 9,840 markets / +$1,842", /live counts, /compare fabricated verdict/metrics/correlation/overlap, /creators tabs + edge profile, /activity "This week" rail + chips, WX-landing "LIVE PROOF" block.
• Render bugs: /build/crypto served weather (SSR now renders the real topic); /creators swapped "Total trades"/"Median Sharpe" stats; /live .mkt-list only filled one of three columns; a misplaced </script> that was silently breaking JS on every strategy-detail page.

Changed

• Leaderboard ranking made understandable — kept Sharpe as the headline metric, added an EV/trade tiebreak, a ≥30-closed-trade eligibility gate (so a lucky small sample can't top the board, with a "N building a track record" note), and honest header copy + a Sharpe tooltip + link to /docs#metrics. Corrected the mislabeled "30-day Sharpe" (it's lifetime).
• Confirmed/clarified the flat $5/trade cap prevents a large bettor from buying the leaderboard.

---

Template for future weeks

### Week of YYYY-MM-DD → MM-DD
**Shipped** — new features / pages / capabilities
**Fixed**   — bugs, data-honesty corrections, render issues
**Changed** — behavior/copy/methodology changes, deprecations