# Round 4 Data Sources - Quick Reference Card
**Research Date:** 2026-02-25 03:12 UTC
**Status:** ✅ Complete - 20 new sources added
---
## 🚀 Top 5 Priority Sources (Start Here)
| # | Source | Why Critical | Free Tier | Integration |
|---|--------|--------------|-----------|-------------|
| 1 | **FRED** | 816K+ US economic series, yield curves | 120 req/min | Easy |
| 2 | **CoinGecko** | 13K+ coins, DeFi, NFT data | 10-50 req/min | Easy |
| 3 | **Alpaca** | Free paper trading platform | Unlimited | Medium |
| 4 | **Financial Modeling Prep** | Stock fundamentals | 250 req/day | Easy |
| 5 | **Etherscan** | Ethereum blockchain explorer | 5 req/sec | Medium |
---
## 📊 All 20 Round 4 Sources
### Macro Economic (2)
1. **FRED** - Federal Reserve Economic Data (816K+ series)
- URL: https://fred.stlouisfed.org/docs/api/fred/
- Auth: Free API key | Rate: 120 req/min | Integration: Easy
2. **Econdb** - Global macro database (40+ countries, 500K+ series)
- URL: https://www.econdb.com/
- Auth: Free API key | Rate: 100K points/month | Integration: Medium
### Stock Market Data (5)
3. **Alpaca Markets** - Paper trading + real-time US equities
- URL: https://alpaca.markets/docs/api-references/
- Auth: Free API key | Rate: Unlimited (paper) | Integration: Medium
4. **Financial Modeling Prep** - Fundamentals, ratios, DCF models
- URL: https://financialmodelingprep.com/developer/docs/
- Auth: Free API key | Rate: 250 req/day | Integration: Easy
5. **Hotstoks** - SQL-powered stock queries + unusual options
- URL: https://hotstoks.com/api
- Auth: Free API key | Rate: 1K queries/month | Integration: High
6. **Intrinio** - Institutional-grade financial data
- URL: https://intrinio.com/
- Auth: Sandbox key | Rate: Limited sandbox | Integration: Medium
7. **Finage** - Global multi-asset data + emerging markets
- URL: https://finage.co.uk/
- Auth: Free API key | Rate: 1K req/month | Integration: Easy
### Crypto & Blockchain (5)
8. **CoinGecko** - 13K+ coins, DeFi, NFT floor prices
- URL: https://www.coingecko.com/en/api
- Auth: None (basic) | Rate: 10-50 req/min | Integration: Easy
9. **Kraken** - Crypto spot & futures exchange data
- URL: https://docs.kraken.com/rest/
- Auth: None (public) | Rate: Tier-based | Integration: Easy
10. **Etherscan** - Ethereum blockchain explorer
- URL: https://docs.etherscan.io/
- Auth: Free API key | Rate: 5 req/sec, 100K/day | Integration: Medium
11. **Brave NewCoin** - Institutional crypto indices (200+ exchanges)
- URL: https://bravenewcoin.com/developers
- Auth: Free API key | Rate: 50 req/day | Integration: Easy
12. **Gemini** - Regulated US crypto exchange
- URL: https://docs.gemini.com/rest-api/
- Auth: None (public) | Rate: 120 req/min | Integration: Easy
### Alternative Data (4)
13. **Plaid** - Bank account & transaction data
- URL: https://plaid.com/docs/api/
- Auth: Sandbox free | Rate: Unlimited (sandbox) | Integration: Medium
14. **Nordigen** - EU Open Banking consumer data
- URL: https://nordigen.com/en/account_information_documenation/
- Auth: Free API key | Rate: 100 users free | Integration: Medium
15. **Styvio** - Stock data + AI sentiment
- URL: https://www.styvio.com/
- Auth: Free API key | Rate: 100 req/day | Integration: Medium
16. **WallStreetBets API** - WSB sentiment tracking
- URL: https://dashboard.nbshare.io/apps/reddit/api/
- Auth: Free API key | Rate: Free tier | Integration: Medium
### Institutional & Analysis (1)
17. **Aletheia** - AI earnings call analysis + insider trading
- URL: https://aletheiaapi.com/
- Auth: Free API key | Rate: 100 req/day | Integration: Medium
### Portfolio Analytics (1)
18. **Portfolio Optimizer** - Mean-variance, Black-Litterman models
- URL: https://portfoliooptimizer.io/
- Auth: None (basic) | Rate: 3K req/month | Integration: Medium
### Reference Data - India (2)
19. **Indian Mutual Fund** - NAV history for all Indian MFs
- URL: https://www.mfapi.in/
- Auth: None | Rate: Fair use | Integration: Easy
20. **Razorpay IFSC** - Indian banking codes
- URL: https://ifsc.razorpay.com/
- Auth: None | Rate: Fair use | Integration: Easy
---
## ⚡ Quick Integration Commands
```bash
# FRED - US Economic Data
curl "https://api.stlouisfed.org/fred/series/observations?series_id=DGS10&api_key=YOUR_KEY&file_type=json"
# CoinGecko - Crypto Prices (No Key Required)
curl "https://api.coingecko.com/api/v3/simple/price?ids=bitcoin&vs_currencies=usd"
# Alpaca - Paper Trading Quote
curl "https://paper-api.alpaca.markets/v2/stocks/AAPL/quotes/latest" \
-H "APCA-API-KEY-ID: YOUR_KEY" \
-H "APCA-API-SECRET-KEY: YOUR_SECRET"
# Financial Modeling Prep - Company Profile
curl "https://financialmodelingprep.com/api/v3/profile/AAPL?apikey=YOUR_KEY"
# Etherscan - Ethereum Gas Price
curl "https://api.etherscan.io/api?module=gastracker&action=gasoracle&apikey=YOUR_KEY"
```
---
## 🎯 Use Case Quick Reference
| Need | Use These Sources |
|------|------------------|
| **US Macro Data** | FRED, Econdb |
| **Stock Fundamentals** | Financial Modeling Prep, Aletheia |
| **Algo Trading Dev** | Alpaca (paper trading) |
| **Crypto Prices** | CoinGecko, Kraken, Gemini |
| **DeFi/Ethereum** | Etherscan, The Graph (Round 3) |
| **Social Sentiment** | WallStreetBets, Twitter (Round 3) |
| **Portfolio Analysis** | Portfolio Optimizer |
| **Global Macro** | Econdb, FRED, OECD (Round 3) |
| **Emerging Markets** | Finage |
| **India Markets** | Indian Mutual Fund, Razorpay IFSC |
---
## 📈 Data Quality Tiers
**🥇 Tier 1 - Institutional Grade**
- FRED, Econdb, Alpaca, Etherscan, Intrinio
**🥈 Tier 2 - Production Ready**
- CoinGecko, Kraken, Gemini, Financial Modeling Prep, Aletheia, Portfolio Optimizer
**🥉 Tier 3 - Community/Aggregated**
- WallStreetBets, Styvio, Indian Mutual Fund, Plaid (sandbox)
---
## ⏱️ Rate Limit Summary
**Excellent (100K+/day):**
- FRED (173K/day)
- Etherscan (432K/day)
- Gemini (173K/day)
- Alpaca (unlimited paper)
**Good (10K-100K/day):**
- CoinGecko (14K-72K/day)
- Econdb (100K points/month)
**Adequate (100-10K/day):**
- Financial Modeling Prep (250/day)
- Aletheia (100/day)
- Styvio (100/day)
**Limited:**
- Finage (1K/month)
- Hotstoks (1K queries/month)
- Brave NewCoin (50/day)
---
## 💰 Cost Structure
**Free Forever:**
- FRED, CoinGecko, Kraken, Gemini, Indian MF, Razorpay IFSC
**Free Tier → Paid Upgrades:**
- Alpaca: $0 paper → $9/mo real-time
- Financial Modeling Prep: $0 → $14/mo
- Etherscan: $0 → $49/mo Pro
- CoinGecko: $0 → $129/mo API key
**Sandbox Only (Production Paid):**
- Plaid: Sandbox free → $0.001-0.35/transaction
- Nordigen: 100 users free → $0.10-0.30/user/mo
---
## ⚠️ Important Notes
### No Rate Limits Issues
- FRED, Econdb, Alpaca (paper), Etherscan, Gemini
### Monitor Rate Limits
- Financial Modeling Prep (250/day can be limiting)
- Aletheia (100/day for heavy usage)
### Sandbox/Development Only
- Plaid (production requires payment)
- Nordigen (100 user limit)
- Intrinio (sandbox only)
### Review ToS Required
- Alpaca (brokerage regulations)
- Plaid (data usage policies)
- WallStreetBets (community API)
---
## 🏆 Key Achievements (Round 4)
✅ **First Federal Reserve data** - FRED (816K+ series)
✅ **Most comprehensive crypto** - CoinGecko (13K+ coins)
✅ **First paper trading** - Alpaca (free unlimited)
✅ **First AI earnings** - Aletheia (NLP analysis)
✅ **First portfolio optimization** - Academic-quality tools
✅ **First Ethereum explorer** - Etherscan (on-chain data)
✅ **First Open Banking** - Nordigen (EU consumer data)
✅ **First India coverage** - Mutual funds + banking codes
---
## 📥 Files Created
1. `/home/quant/apps/quantclaw-data/NEW_DATA_SOURCES.md` (29KB)
- 60 total sources (20 × 3 previous rounds + 20 new)
2. `/home/quant/apps/quantclaw-data/RESEARCH_SUMMARY_ROUND4.md` (14KB)
- Detailed analysis and integration guidance
3. `/home/quant/apps/quantclaw-data/ROUND4_QUICK_REFERENCE.md` (this file)
- Quick reference card for developers
---
## 🎬 Next Actions
1. ✅ Review this quick reference
2. ⏭️ Start with FRED integration (highest ROI)
3. ⏭️ Add CoinGecko for crypto coverage
4. ⏭️ Set up Alpaca paper trading environment
5. ⏭️ Integrate Financial Modeling Prep fundamentals
6. ⏭️ Deploy Etherscan for DeFi/Ethereum work
---
*Created by ResearchClaw subagent*
*2026-02-25 03:15 UTC*
