LegitShow is the trusted source on every launched service — web apps, SaaS, AI tools, MCP servers and developer tools: what each one does, who it’s for, and how it actually holds up, measured by an objective 7-Frame production-readiness benchmark taken deterministically from the public surface. How we measure →

Legit.Show benchmarks every launched service it lists — measured deterministically from the public surface. See the methodology →

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Ranked by measurement

Best stock market data api

7 tested · top 7 shown

Ordered by a seven-frame production-readiness benchmark measured from each product's public surface — not popularity, pricing or feature count. Nobody pays to appear here and the order is never edited. How it is measured →
How this field scores
low 50median 74best 100
  1. 1
    Sugra
    Sugra provides a unified API for market, economics, and news data.
    Perf 97
    Sec 100
    Priv 100
    Rel 100
    Std 100
    Disc 100
    sugra.systems · measured 2026-08-09
  2. 2
    3spread
    3spread provides a free API for accessing standardized SEC filing data.
    Perf 92
    Sec 80
    Priv 75
    Rel 100
    Std 92
    Disc 100
    3spread.com · measured 2026-08-09
  3. 3
    a-stock-data
    A股全栈数据工具包 · 10层架构 · 43端点(含3官方备胎) · 15数据源 · 行情/研报/资金面/筹码/公告/打板/ETF期权/舆情互动全覆盖+备用源降级 | China A-Share full-stack d
    Sec 90
    Std 100
    Disc 65
    3 not assessed
    github.com · measured 2026-08-13
  4. 4
    Clawby
    Clawby provides live market, on-chain, and social data for AI agents via a single API key.
    Perf 68
    Sec 45
    Priv 25
    Rel 100
    Std 89
    Disc 100
    openclawby.com · measured 2026-08-10
  5. 5
    Financial Data API
    API providing real-time and historical financial data on public market assets.
    Perf 69
    Sec 45
    Priv 0
    Rel 100
    Std 89
    Disc 57
    bluedoor.sh · measured 2026-08-09
  6. 6
    SEFCON
    API providing Korean stock fundamentals parsed directly from DART regulatory filings.
    Perf 68
    Sec 45
    Priv 25
    Rel 67
    Std 85
    Disc 45
    api.sefcon.kr · measured 2026-08-09
  7. 7
    ETFFlow by Yasin Özen
    API and MCP server for querying institutional spot BTC and ETH ETF net flow data.
    Perf 100
    Sec 45
    Priv 25
    Rel 47
    Std 64
    Disc 15
    yasinozen35.github.io · measured 2026-08-09
What this does not say
Products whose sites block automated readers are left out rather than ranked last — we did not measure them, and bottom placement would claim something we never observed. Scores are floors: anything set at a CDN, a proxy or behind a login is invisible from the public surface.

All measured categories → · Browse the directory →