Create a free API key · StockData/API

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What you get today

01

A free key

Near real-time quotes, full daily history and every endpoint on the free tier. A card on file is required before your first key — you're only charged if you upgrade.

02

YH-compatible shapes

quoteResponse, chart, optionChain — existing parsers, SDKs and spreadsheets keep working.

03

Rate-limit headers

Every response reports where you stand; your dashboard shows the same counters live.

04

Upgrade in place

The same key gets the bigger allowance minutes after you subscribe. Nothing to re-issue, nothing to redeploy.

Quotes and charts refresh from the source at request time — in market hours a quote is at most about a minute old — with full warehouse history behind them for research, dashboards and backtests.

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