Oct 16, 2026 – Oct 22, 2026
What changed: week ending Oct 22, 2026
2 price changes, 2 new tools, 0 updated incident records (plus first incident records for 40 tools), 2 guides, 6 learning paths, 38 glossary terms.
Price changes we recorded
- TradeZella: Plan prices differ from our earlier record.
Before (our earlier record): $29/month billed monthly or $288/year; Pro $399/year (our Oct 20 record)
Now: Essential $35, Pro $59, Ultra $99 per month billed monthly; $315, $531, $891 per year billed yearly
Detected Oct 22, 2026 · official source - Massive (formerly Polygon.io): Rebrand: Polygon.io is now Massive.
Before (our earlier record): Polygon.io at polygon.io; individual plans from $29/month to $199/month (our Oct 20 record)
Now: Massive at massive.com; individual plans from $29/month to $199/month (no price change seen)
Detected Oct 22, 2026 · official source
New tools in the directory
- Robinhood (Trading MCP) · Optional Robinhood Gold membership $5/month (first 30 days free). Gold page lists $0.50 per futures contract and $0.35 per index options contract for Gold members. Other trading and transfer fees vary by product; check Robinhood's fee schedule
- Coinbase (Coinbase for Agents) · No subscription needed. Coinbase Advanced spot fees from Sep 16, 2026: US entry tier 0.50% maker / 0.90% taker (EU/UK 0.25% / 0.50%); lower tiers from $10,000 30-day volume. Simple buy/sell orders include a spread and other fees shown at preview
Known-incidents records
Every tool page now has a dated "Known incidents" record (breaches, outages affecting funds, regulator actions, lawsuits, data leaks): 40 tools. Browse the tools.
New setup guides
New learning paths
- New to AI for trading
- AI backtesting from zero
- Crypto bots, safely
- Connect an AI agent to your broker
- Journaling & reviewing trades with AI
- Research & screening with AI
New glossary terms
MCP (Model Context Protocol) · AI agent · LLM (large language model) · Prompt · Hallucination · Context window · API · API key · OAuth · Least privilege · Two-factor authentication (2FA) · IP allowlist · Webhook · Trading bot · DCA bot · Grid bot · Backtesting · Overfitting · Look-ahead bias · Out-of-sample testing · Walk-forward analysis · Slippage · Commission and fees · Maker and taker fees · Market and limit orders · Paper trading · Drawdown · Sharpe ratio · Expectancy · Win rate · Trading journal · Pine Script · Python · Screener · Custody · Read-only access · Phishing · Affiliate link
"Before" values are our own earlier dated records, not necessarily the vendor's official history. Confirm prices on the vendor's site. Education only; not a recommendation to buy any tool, security or crypto asset.