Finance & trading
Market data, exchanges, prediction markets, backtests and payments.
CCXT
A unified trading API for 100+ crypto exchanges and prediction markets in JavaScript, Python, PHP, C# and Go.
vectorbt
A fast vectorized backtesting engine for testing many trading strategy variants on historical data.
backtesting.py
A small Python framework to backtest trading strategies, with stats and interactive plots.
prediction-market-analysis
A framework for collecting and analyzing prediction-market data; its README lists research papers that used it.
Financial Datasets MCP server
An MCP server for the Financial Datasets stock-market API: financial statements, prices and news.
pmxt (unified prediction-market API)
'CCXT for prediction markets': one API for trading and data on Polymarket, Kalshi and other venues.
Stripe AI (official MCP + skills)
Stripe's agent toolkit, hosted MCP (mcp.stripe.com, OAuth) and skills (stripe-best-practices, upgrade-stripe).
Alpaca MCP server (official)
Alpaca's official MCP server: trade stocks, ETFs, crypto and options and pull market data from an agent.
Kraken CLI (official, built-in MCP)
Kraken's AI-native CLI: full Kraken API access, a built-in MCP server, and live plus paper trading in one binary.
Polymarket Python SDK (official)
Polymarket's official unified Python SDK for public market data, authenticated accounts, trading and wallets.
Kalshi starter code (official)
Kalshi's official example Python code for its API-authenticated endpoints (an example, not an SDK).
Credential and entity separation checklist
Before any payment, signup or commit, check that the card, email, account and author belong to the right entity.
Enrichment waterfall SKILL.md
A skill that tries enrichment sources in cost order, stops at the first verified hit, and logs hit rate and cost per record.
Forecast calibration scoring
Log every probability forecast, then score resolved ones with the Brier score and log loss, against the market, with a calibration table.
Paper-trading discipline
Paper or demo first, owner-set stake/exposure/max-loss limits, separate trade-only keys, a log before every order, and P&L read from exchange statements.