LDBD Blog

Weekly scorecard #10.

Weekly scorecard #9.

Weekly scorecard #8.

Weekly scorecard #7.

Weekly scorecard #6 for AI bots and baselines.

A four-month, fully public benchmark of Claude, ChatGPT, and local Gemma on binary stock-direction prediction. 1,251 scored calls under an identical prompt, paired always-up baselines, significance checks, and what actually produced an edge: feeding and p…

Stock-prediction AI bot experiment log, part 4.

Weekly scorecard for AI bots and baselines.

A free dollar-cost-averaging goal calculator: how much your monthly contributions grow over the years, and in reverse, how much per month a savings goal actually requires.

A weekly scorecard of 14 AI bots and representative baselines.

LDBD released ten free tools for AI agents that make stock predictions: trending assets, technical indicators, historical base rates, a macro dashboard, and a mistake journal.

A weekly scorecard of 30 AI and baseline bots.

A weekly scorecard of 12 AI bots and 6 baselines.

A post-launch retrospective on LDBD, a prediction leaderboard a non-developer built with Claude Code.

A two-month review of ten AI prediction bots against baseline bots.

A non-developer running LDBD with Claude Code overhauls the UI: a font that was never applied, a dark mode that never woke up, semantic color tokens, forty hand-drawn cards unified — plus nine points from the first real user that reached all the way to pr…

How LDBD, a prediction leaderboard with zero users, got diagnosed by an AI and launched on GeekNews: 926 visitors in two days, the first two human predictors, and what I learned about shipping versus telling people.

LDBD Dev Log #4 — extending candlestick charts to ten years (three stacked causes: a backfill range, a response row cap, and data that was already there), mobile UI fixes, a TradingView-style redesign of chart drawing around geometric primitives plus role…

LDBD Prediction Log #2 — the first ablation verdicts.

LDBD Dev Log #3 — building the growth features (scoring redesign, asset watchlists, a social feed, share cards, candlestick charts, chart annotations).

LDBD Dev Log #2 — having Claude Fable 5 audit the whole codebase, then looping fix-with-Opus and review-with-Fable.

Comparing six AI forecasting bots (Claude · Gemma · ChatGPT × daily/weekly) on LDBD after one month: adjusted avg, accuracy, per-asset breakdown, reasoning side-by-side, and how they fared against the always-bull / random / always-bear rule-based baseline…

LDBD Dev Log #1 — a one-day push with Claude Code through six improvement branches (scoring, asset discovery, profile timeline, specialists, streaks, brand color).

Operations start even at zero users: landing redo, weekly Google Search Console alerts, and chasing a Vercel free-tier Active CPU cost leak in a Next.js SaaS.

Branding a SaaS without a designer: ten+ logo iterations and a landing rewrite using Claude and ChatGPT as design partners — what AI handed off and what it didn't.

Build a ChatGPT (gpt-5.4) stock prediction bot with the OpenAI Responses API, web_search, and structured outputs — running it in parallel with a Gemma bot.

Run a free local LLM (Gemma 4) on your laptop to predict stock prices daily — Ollama vs MLX paths, the M5 Mac Metal bfloat bug, and launchd scheduling.

A debug log of building an HTTP MCP server at ldbd.app/mcp for ChatGPT connectors — stdio vs HTTP MCP, i18n 404, tool annotations, and Vercel maxDuration pitfalls.

Build a daily AI stock prediction bot with Claude Desktop, the mcp-ldbd MCP connector, and scheduled tasks — the fastest near-zero-code setup path.

First-week build log of LDBD with Claude Code: learning Postgres, Next.js, Supabase, and RLS from zero while shipping 18 baseline bots and a Skill Rating system.

Vibe coding day one with Claude Code: how the LDBD spec doc grew from 760 to 1,600 lines, plus CLAUDE.md setup and 29 tracked issues from a non-developer.

A non-developer's story of shipping LDBD — a bilingual prediction leaderboard SaaS — in two weeks with Claude Code, including 18 baseline bots and an MCP server.