TradeSim - Realistic Market Data
Realistic market data for trading UIs — zero API keys
What it does
Building a trading UI? Tired of paying for market data APIs just to test your dashboard? trade-data-generator generates realistic synthetic market data for equity, forex and crypto. → Price ticks with mean reversion → Order book depth (bid always below ask) → OHLCV candles — multiple intervals → Market hours for equity and forex → EventEmitter API — any WebSocket server → Zero dependencies → TypeScript support 836 downloads. MIT license. Node.js 14+ See it live at tradesim.dev/demo
Does the same job
all alternatives →- IJInvestorsexchange.jl – parse trade-level stock market data in Julia2022 · github.com · ▲136
Backstory: I wanted to play with intraday stock data but couldn't find a free dataset anywhere. IEXCloud [1] offers API access to 1-minute granularity intraday historical price data, but I was worried that it could get expensive or unwieldy to build up a substantial dataset via API calls. Plus, IEX gives out their raw data for free. I probably should have just used the IEXTools python library [2] to parse IEX's raw data dumps, but I was working on a Julia project, so it felt more thematically appropriate to build a new tool from scratch. I haven't been actively using InvestorsExchange.jl a…
Real-time Market APIMar 2026 · realmarketapi.com · ▲2Fast, reliable API for stock, crypto, and forex data
- TATradeSight – a Rust-powered market risk dashboard with AI analysis2024 · tradesight.live · ▲5
I built TradeSight (https://tradesight.live) as a lightweight market risk indicator that combines real-time data with AI insights. The backend is written in Rust, with a vanilla JS frontend for maximum performance. It aggregates data from multiple sources (FRED API, Yahoo Finance) and uses Claude's API to provide detailed market analysis. Technical stack: - No login required - static page with hourly updates - Rust backend for efficient data aggregation - Vanilla JavaScript frontend for minimal overhead - Claude API integration for real-time market analysis - Data sources: FRED…
- SCSpot Canvas – AI-Powered trading charts for learning and automating TASep 2025 · spotcanvas.com · ▲8
Hi HN, About a year ago I started tinkering with drawing candlestick charts on an HTML canvas. What began as a small experiment turned into a full-blown crypto charting library. At some point I asked myself: could this actually become a competitor to TradingView? That felt overwhelming, since TradingView has an enormous feature set. Still, I kept building — partly because I enjoy side projects more than watching TV By the summer, I had a working SaaS version. But it felt like it was missing something that would make it truly stand out. Then I realized: the chart itself should be AI-powered.…
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