Best tools for API

SEC API (sec-api.io)

SEC API is a commercial EDGAR service with filing search, real-time feeds, XBRL-to-JSON conversion, section extraction, insider filings, 13F data, and other regulatory datasets. It is for production ingestion rather than building your own parser. The free tier is small and redistribution needs enterprise terms.

SEC EDGAR - Company Filings (Full‑Text Search & Search Filings)

SEC EDGAR is the free public source for company, fund, insider, ownership, prospectus, and XBRL filings submitted to the SEC. It has full-text search, latest filings, RSS, CIK lookup, public JSON APIs, archives, and bulk files. Most filings still need parsing before comparison or analysis.

SEC.gov (EDGAR)

SEC.gov EDGAR is the official free source for U.S. company, fund, insider, and 13F filings, with full-text search, RSS, bulk archives, and public JSON APIs. It is the validation source for filings research, not a polished commercial terminal.

TipRanks

TipRanks combines analyst ratings, targets, expert rankings, Smart Score, AI analysis, news sentiment, insider signals, hedge-fund activity, and portfolios. It is useful for comparing market views quickly, with Premium and Ultimate adding deeper expert, portfolio, export, and AI tools.

Uncle Stock

Uncle Stock screens more than 100,000 global stocks with financial metrics, valuation models, scores, historical tests, watchlists, and alerts. Gold adds CSV and JSON access, an MCP server, and limited portfolio tracking. It is not a broker or an intraday trading simulator.

Unusual Whales

Unusual Whales tracks options flow, dark pools, congressional trades, insider activity, market data, alerts, screeners, and social sentiment. It is built for active traders and alternative-data research, not a broker, portfolio ledger, or guarantee that unusual activity predicts returns.

13F Insight

13F Insight pulls institutional holdings, insider trades, and ownership filings into one research workspace. Its AI can answer questions with filing citations, but the filings arrive late and the generated summaries still need a check against the SEC documents.

Addepar

Addepar is a professional portfolio system for RIAs, family offices, private banks, asset managers, and institutions. It brings accounting, reporting, trading, alternative assets, client portals, and firm data together, with pricing and implementation handled through sales.

Ahrefs

Ahrefs gives investors a way to check the web demand around digital businesses, publishers, marketplaces, SaaS companies, and consumer brands. It measures search traffic, keywords, backlinks, and AI visibility. Those numbers are estimates, not company filings or a portfolio system.

Alpha Spread

Alpha Spread combines DCF and relative-value estimates, stock reports, screens, alerts, analyst forecasts, watchlists, and a company-question assistant. Free use is metered weekly.

Alpha Vantage

Alpha Vantage is an API-first source for market and economic data. Developers, students, quants, and analysts can pull stocks, funds, FX, crypto, options, commodities, fundamentals, news, sentiment, and macro series with one key. The free quota is small, and commercial use needs separate licensing.

AlphaSense

AlphaSense is a research system for institutional investors, strategy teams, consultants, investor-relations teams, and corporate researchers. It searches broker research, expert transcripts, filings, news, financial data, and private documents. Annual pricing is handled by sales.

ApeWisdom

ApeWisdom tracks ticker mentions across Reddit, WallStreetBets-style forums, crypto communities, and 4chan /biz. It is useful for seeing where retail attention is moving. Mentions are noisy, so a leaderboard is not a view on value or price direction.

Autochartist

Autochartist scans markets for chart patterns, technical setups, economic events, and news sentiment. Brokers and trading platforms can use it to provide signals, alerts, position sizing, and MetaTrader or API integrations. Access usually comes through a broker, direct subscription, or commercial agreement.

Bank of England

The Bank of England site is the primary free source for UK monetary-policy decisions, MPC minutes, Monetary Policy Reports, rates, exchange rates, statistics, and yield-curve files. It is a reference source for macro research, not a trading app. Some series arrive as downloads rather than through a complete API.

Bank of Japan (BOJ)

The Bank of Japan site publishes Japan's monetary-policy releases, meeting calendar, statistics, charts, time-series downloads, and API access. It is useful for primary-source rates, FX, money stock, TANKAN, balance-of-payments, and central-bank data. It is not a security research or trading terminal.

BankAnalysis

BankAnalysis is an early-access research app for U.S. bank stocks. It combines standardized bank financials, bank-specific ratios, filings, earnings calls, screens, peer comparisons, charts, branch maps, and a cited AI analyst called Jamie. The waitlist is open and public pricing is not posted.

Benzinga

Benzinga is a real-time market-news and trading-data service for active traders, investors, developers, and data buyers. It covers alerts, scanners, calendars, squawk, options activity, analyst actions, filings, transcripts, and APIs. Real-time tools require a paid plan or add-on, and Benzinga does not provide portfolio accounting.

BIS Data Portal

The Bank for International Settlements' free data portal covers banking, credit, debt, derivatives, liquidity, property prices, exchange rates, central banks, and payments. It includes charts, downloads, a release calendar, and an SDMX API.

BizToc

BizToc aggregates business and finance stories in a configurable grid and chronological Wire feed. It also provides a market snapshot, imagery view, search, RSS, and a RapidAPI feed. Users should open the original publisher before relying on a story.

Börsdata

Börsdata gives investors long-history Nordic fundamentals, ratios, screens, ownership, insider and short-selling data, technical charts, reports, watchlists, calendars, and spreadsheet or API access. It is strongest for Nordic equities. Global data, holdings, Excel or Sheets workflows, and the REST API depend on the plan.

Business Quant

Business Quant covers U.S. company fundamentals, operating KPIs, segment data, analyst estimates, institutional ownership, and insider trades. It is useful when company-specific operating measures matter alongside standard financial statements. The free plan limits KPI history and API usage, while paid plans increase history and usage allowances.

Calcbench

Calcbench extracts and standardizes financial data and disclosure text from SEC filings. Users can trace values to source documents, compare filings, work in Excel, or license API access separately.

CB Insights

CB Insights is an enterprise intelligence service for strategy, innovation, venture, corporate development, M&A, and investment teams. It maps private and public companies, investors, deals, markets, and competitive signals, with AI scouting and workflow integrations. Pricing and data-feed scope are commercial discussions.

Cbonds

Cbonds is a bond-data service for professional and private investors. Search bonds, quotes, yields, ratings, new issues, events, watchlists, and portfolios. Companies can also license API and file feeds or an Excel add-in.

CFPB Consumer Complaint Database

The CFPB Consumer Complaint Database publishes complaints about consumer financial products and services. Users can study complaints by company, product, issue, geography, response, and narrative through the site, a CSV download, or the API. The CFPB does not verify the consumer's account.

Changeflow (Trackly)

Changeflow, formerly Trackly, monitors web pages, PDFs, feeds, and API endpoints. It summarizes detected changes for review. It does not supply market prices or execute trades.

Charles Schwab

Charles Schwab combines a U.S. brokerage, research, screeners, tax workflows, thinkorswim, paper trading, alerts, market data, and Trader API access. It suits investors who want one regulated account for long-term investing and active trading. It is a broker, not an open market-data API.

CME FedWatch

CME FedWatch converts 30-Day Fed Funds futures into market-implied probabilities for upcoming FOMC rate outcomes. It is useful for rates and macro monitoring, with a free web tool and paid end-of-day or intraday APIs. The probabilities are market pricing, not Fed guidance.

Danelfin

Danelfin scores stocks and ETFs from 1 to 10 based on its estimate of three-month market outperformance. Use the score, rankings, screens, alerts, and API for idea generation. It is a signal layer, not a complete investment process.

Databento

Databento delivers normalized live and historical exchange data through APIs, files, and client libraries. It is aimed at developers, quants, and trading firms that need ticks, order books, bars, instrument definitions, corporate actions, or raw packets across supported equity, options, and futures venues.

Diffchecker

Diffchecker compares text, Word files, PDFs, Excel files, images, folders, and API responses. It is useful for spotting changes in filings, research drafts, models, contracts, or disclosures. It does not supply the financial data being compared.

Dune

Dune lets users query decoded blockchain data with SQL and turn it into dashboards, APIs, alerts, uploads, and agent workflows. It is for custom onchain research across many chains, not a fixed crypto market-data screen.

ECB Data Portal

The European Central Bank's free portal provides euro-area statistics, policy rates, exchange rates, yield curves, macroeconomic series, metadata, and an SDMX API.

EDINET

EDINET is Japan's official corporate-disclosure system. Search issuers, securities, funds, stock codes, document types, keywords, and dates, then retrieve filings, XBRL resources, taxonomy files, and API results.

EIA Open Data

EIA Open Data is the U.S. government's source for energy statistics and operational data. Browse the series or use the free API, bulk files, and spreadsheet tools for commodity, utility, macro, and energy-market research.

Envestnet Wealth Management Platform

Envestnet is an enterprise wealthtech suite for RIAs, broker-dealers, banks, asset managers, and fintechs. It connects planning, proposals, trading, reporting, billing, client portals, data, APIs, and integrations. It is built for firms, not self-directed investors.

EPSMomentum

EPSMomentum focuses on earnings momentum and entry timing. It combines estimate revisions, post-earnings drift, timing signals, scanners, AI analysis, and market dashboards for U.S. stocks and ETFs.

Estimize

Estimize collects crowdsourced EPS, revenue, and macro forecasts before company reports and economic releases. It gives investors and data teams an expectations benchmark alongside official estimates. It is not a portfolio manager or execution platform.

ETF Action

ETF Action is a professional ETF research and model-building service. It covers classification, look-through holdings, overlap, flows, model portfolios, 13F screens, exports, and enterprise data workflows. It is for teams that need more than a free quote page.