specification: API Commons Plans
specificationVersion: '0.1'
schema: https://raw.githubusercontent.com/api-evangelist/interface-research/main/schema/api-commons.yml#/$defs/Plans
provider: Stooq
providerId: stooq
created: '2026-06-13'
modified: '2026-06-13'
reconciled: true
tags:
  - Fintech
  - Market Data
  - Plans
description: >-
  Stooq provides free access to historical market data with no published paid tiers. Users must
  obtain an API key via an on-site CAPTCHA process at https://stooq.com/q/d/?s=spy.us&get_apikey.
  A daily request quota is enforced; requests exceeding it receive an "Exceeded the daily hits
  limit" error. The exact quota is not publicly documented. Bulk ZIP/CSV database snapshots
  require a manual CAPTCHA-gated download from https://stooq.com/db/h/.
sources:
  - https://stooq.com/db/h/
  - https://stooq.com/db/
  - https://www.quantstart.com/articles/an-introduction-to-stooq-pricing-data/
plans:
  - id: stooq-free
    name: Free
    type: freemium
    description: >-
      Free access to all historical OHLCV data and bulk downloads. An API key obtained via
      on-site CAPTCHA is required (as of early 2026). Daily request quota is enforced but the
      exact limit is undisclosed; exceeding it returns an error message rather than HTTP 429.
    entries:
      - label: Daily quota
        name: free_daily
        type: quota
        metric: request
        limit: -1
        timeFrame: day
        geo: global
        unit: 1
        price: '0.00'
        userMultiplied: false
        notes: Exact limit undisclosed; "Exceeded the daily hits limit" error returned when breached.
      - label: API key
        name: free_apikey
        type: feature
        metric: key
        limit: 1
        timeFrame: lifetime
        geo: global
        unit: 1
        price: '0.00'
        userMultiplied: false
        notes: Obtained via on-site CAPTCHA at stooq.com/q/d/?s=spy.us&get_apikey
    elements:
      - name: Historical OHLCV time series (daily/weekly/monthly/quarterly/yearly)
      - name: Intraday data (hourly ~9 months, 5-minute ~1 month)
      - name: 21,000+ global securities, ETFs, indices
      - name: 1,980+ currency pairs
      - name: 130+ cryptocurrencies
      - name: Commodities, bonds, economic indicators
      - name: Bulk ZIP/CSV database snapshots
maintainers:
  - FN: Kin Lane
    email: kin@apievangelist.com