>_ best Data & APIs tools
The 39 top data & apis tools in the index, ranked by upvotes. No ads, no fluff — just the stack.
- 01.validityBase— validityBase makes the history of data, signals and track records independently verifiable and helps to package data for systematic investors.
- 02.TapeSurf— Visualizes aggregated order books and order flow for 10,000+ crypto markets across multiple exchanges with real-time heatmaps and liquidation feeds
- 03.cvforge— Generates custom options analytics applications from natural language prompts using AI agents and live US equity options data including chains, greeks, and flow.
- 04.xfinlink— Financial data API service focused on providing structured market and fundamentals data for developers.
- 05.Quant Data— Provides exchange-licensed real-time and historical options order flow, dealer exposure metrics, dark pool prints, and market data with dashboard and mobile apps.
- 06.Soria— Aggregates healthcare-specific financial data from 125+ sources into an AI-native terminal for sector-focused research and analysis.
- 07.FRED MCP Server— Provides MCP server access to 800,000+ Federal Reserve Economic Data time series with built-in transformations, search, and browsing capabilities for AI assistants and developers.
- 08.Homesage.ai— Provides AI-powered investment property search, property analysis reports, and real estate data APIs covering 150M+ US residential properties with computer vision-driven renovation estimates and investment scoring.
- 09.Zillow Research— Provides downloadable CSV datasets and interactive dashboards covering US home values, rental prices, inventory, sales, affordability, and market forecasts at national, metro, and county granularity.
- 10.Thinknum— Provides alternative data scraped from the web covering store locations, job listings, product pricing, real estate listings, car inventories, and app engagement metrics across 450,000+ companies.
- 11.Quantcha— Provides options trade search, screening, analysis, portfolio management, and proprietary options data through a web platform and API.
- 12.IVolatility— Provides institutional-grade historical and real-time options data via API, including implied volatility, Greeks, full chains, and volatility surfaces across 20+ years of equity and futures options markets.
- 13.Trading Economics— Provides access to 20 million economic indicators, forecasts, and financial data for 196 countries through web platform and API
- 14.Finaeon— Provides manually transcribed historical financial data from original archives spanning 1000+ years, covering equities, bonds, commodities, exchange rates, and economic indicators with unbroken chain-linked series.
- 15.Kwants— Provides a self-hosted Python library for downloading Polygon flat-file data, building point-in-time ticker universes with adjustments, and running backtests against 1m/5m/daily bars using a declarative DSL for entry/exit conditions.
- 16.Carbon Arc— Operates a two-sided insights platform acting as counterparty for proprietary data transactions between parties.
- 17.Platform Aeronaut SBC & Dilution— Tracks stock-based compensation and dilution metrics across public companies with leaderboard rankings, sector views, and company profiles.
- 18.cvforge— Vibe-code options data with your coding agent. We provide infrastructure and options data - you provide the prompt!
- 19.TagniFi— Provides standardized financial statement data and footnotes across multiple industry templates via API and Excel add-in
- 20.Unusual Whales— Tracks real-time options flow, dark pool activity, congressional trading, Greek exposure, and unusual stock market data via web platform and API with 100+ endpoints.
- 21.Probalytics— Aggregates and normalizes prediction market data from Polymarket, Kalshi, and other platforms through a unified API with SQL access and bulk exports
- 22.Prediction Hunt— Aggregates live odds from Kalshi, Polymarket, PredictIt, ProphetX, Opinion, and Predict.fun into a unified API for cross-platform comparison, arbitrage detection, and whale tracking.
- 23.Wethr.net— Provides real-time weather observation data and model forecasts for trading weather derivatives on platforms like Kalshi and Polymarket
- 24.StockAInsights— Extracts financial metrics and company intelligence from SEC filings using AI and provides structured APIs for income statements, balance sheets, cash flows, ratios, and 8-K events across all U.S. public companies
- 25.Public API— Provides programmatic trading access to stocks, ETFs, options, crypto, and bonds with real-time execution, rebates on options contracts, and no commissions.
- 26.MMT (Market Monkey Terminal)— Aggregates crypto orderflow, orderbook heatmaps, footprint charts, volume delta, market profile, liquidations, and open interest across 20+ exchanges in real-time with desktop-class performance in browser
- 27.MarketLens— Visualizes aggregated order flow from limit and market orders across 10,000+ crypto markets in real-time at 60+ FPS using GPU-accelerated rendering.
- 28.Percept— Provides real-time and historical market data APIs with high-performance charting visualization for enterprise applications.
- 29.Kiyotaka— Provides unified REST and WebSocket API for crypto market data across 20+ exchanges and Polymarket prediction markets with normalized OHLCV, orderbook depth, liquidations, TPO, and trader analytics
- 30.Handstands— Extracts and monitors structured data from Shopify stores and US building permits via pay-per-record tools on Apify.
- 31.MarketAlerts— Builds proprietary datasets, market indicators and KOL distribution — paired with marketing and engineering to take fintech products to escape velocity.
- 32.Massive— A data infrastructure platform that provides real-time and historical financial market data through APIs, including stocks, options, crypto, and other trading instruments.
- 33.VouchAPI— VouchAPI turns SEC filings, CIM data rooms, market intelligence, and agent reasoning into certified investment research — with source-level evidence, method gates, and cryptographic audit trails.
- 34.captide— Agentic AI systems grounded on public companies' disclosures that power leading long/short hedge funds and investment banks
- 35.Japan Filings— Search and alerts across Japanese public-company filings (TDnet/EDINET) — the Japan equivalent of SEC EDGAR.
- 36.PreReason— Delivers structured, real-time market data and context optimized for AI agents to analyze and make financial decisions.
- 37.Financial Datasets— Stock-market data API built for AI agents — financials, SEC filings, KPIs, insider trades, and analyst estimates across 17,000+ tickers and 30+ years of history.
- 38.Rose AI— Natural-language data platform for financial analysts — query, visualize, and audit datasets with explainable logic trees and a built-in data marketplace.
- 39.Daloopa— AI-extracted, audit-ready financial data for 5,500+ global tickers — every number hyperlinked to its primary source for one-click verification.
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