Marketstack

marketstack.com

Provides a REST API delivering real-time, intraday, and historical worldwide stock market data plus SEC EDGAR filings in JSON format.

The Marketstack API uses api key authentication; has freemium pricing; offers a free tier (100 requests/month free with end-of-day data and 1 year history). Verified 2026-07-12 with per-field source links.

Finance Verified 2026-07-12 medium confidence

Base URL

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Auth

api_key

marketstack.com ↗

Free tier

100 requests/month free with end-of-day data and 1 year history

marketstack.com ↗

Pricing model

freemium

marketstack.com ↗

Pricing

Free $0 (100 req/mo); Basic $9.99/mo (10,000 req/mo, +0.003996 each); Professional $49.99/mo (100,000 req/mo); Business $149.99/mo (500,000 req/mo); Enterprise custom. Yearly billing discounts available.

marketstack.com ↗

Rate limits

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OpenAPI spec

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MCP server

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