Stocks
Variants seen in the corpus:
Stocksstocks
Providers using this tag (70)
Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.
Exemplar 4 Complete, well-documented, and agent-ready
Strong 11 Solid coverage with minor gaps
Developing 22 Usable, with meaningful gaps to close
Thin 17 Limited public surface area
Emerging 7 Early or largely undocumented
Minimal 9 Almost no public developer surface
APIs with this tag (29)
Ranked by the provider's API Evangelist rating — the Kin Score is scored per provider, not per API, so every API of a provider shares its band. How the rating works →
Exemplar 1 Complete, well-documented, and agent-ready
Strong 7 Solid coverage with minor gaps
SiftingIO Stocks APIUS-equity fundamentals (SEC) and historical bars.EODHD Fundamental Data APIProvides company fundamentals including general info, financial statements (income statement, balance sheet...EODHD Intraday Historical Data APIProvides intraday historical OHLCV data at 1-minute, 5-minute, and 1-hour intervals for US stocks and other...EODHD Live (Delayed) Stock Prices APIReturns live or 15-20 minute delayed stock quotes including last price, change, volume, and bid/ask data fo...Bloomberg Market Data APIProvides real-time and historical market data, including stock prices, indices, commodities, and currencies.Alpaca Trading APIThe Alpaca Trading API enables commission-free trading of US-listed equities, options, and crypto. It expos...Tradier Brokerage APIThe Tradier Brokerage API provides REST endpoints for placing equity, option, and multileg orders, retrievi...
Developing 10 Usable, with meaningful gaps to close
Congress Trades MCP ServerA focused Streamable HTTP MCP server exposing three read-only tools over the Congress Trades dataset — get_...J-Quants Equities APIListed issue master, daily and morning-session OHLCV, minute bars and tick trades (add-on), earnings calend...Tiingo End-of-Day APIDaily OHLCV history for 100,000+ US equities and ETFs back to 1962, with split and dividend adjustments.Tiingo IEX Intraday APIIEX-sourced intraday quotes and trades over REST and WebSocket - real-time during US market hours.Cenevo Stocks APIThe Stocks API from Cenevo — 7 operation(s) for stocks.Spreadshirt Stocks APIGet the available stock on the variants of the created articles.Xignite Global Historical APIEnd-of-day and historical equity prices including historical quote ranges, chart bars, adjustment factors, ...Xignite Global Quotes APIDelayed stock quotes for equities across global exchanges, served as REST operations (GetGlobalDelayedQuote...Xignite Global Real-Time APIReal-time stock quote data for global equities via REST request/response operations on the globalrealtime.x...Zalando stocks APIThe stocks API from Zalando — 1 operation(s) for stocks.
Thin 4 Limited public surface area
Labguru Stocks APIThe Stocks API from Labguru — 7 operation(s) for stocks.Polygon.io Stocks APIReal-time and historical US equity market data including aggregates (minute/hour/day bars), trades, NBBO qu...DEGIRO product-search APIThe product-search API from DEGIRO — 1 operation(s) for product-search.LunarCrush API v4REST API for LunarCrush social and market intelligence. Endpoints cover trending topics, categories, creato...
Emerging 5 Early or largely undocumented
TradeBBTradeBB exposes a single publicly consumable machine-readable interface: an llms.txt file designed for LLM ...IEX Cloud Core Data API (sunset)Real-time and historical US equity quotes, intraday and historical prices, OHLCV charts, news, dividends, s...Norgate Data FundamentalsCompany fundamental lookups - named fundamental fields, financial summary, business summary, shares outstan...Norgate Data Price and Volume DataRetrieve daily EOD open/high/low/close, volume, turnover, unadjusted close, dividends and open interest as ...Norgate Data Security Metadata and ClassificationsSingle-value reference and metadata lookups for a security - name, symbol, asset id, domicile, currency, ex...
Minimal 2 Almost no public developer surface
Score breakdown
Frequency
55.9
log-scaled weighted occurrences
Breadth
1.9
spread across providers
Quality lift
47.7
mean composite of providers using it
Cohesion
17.9
strength of nearest seed neighbor
Related tags
Options 30 co-occurrences
Fundamentals 14 co-occurrences
ETFs 14 co-occurrences
Market Data 49 co-occurrences
Indices 13 co-occurrences
Corporate Actions 11 co-occurrences
Futures 14 co-occurrences
End of Day 9 co-occurrences
Where this tag comes from
Provider tag64
Api tag29
Openapi tag6
Openapi op tag46
Cohort brief
Auto-generatedThe 70 providers in the APIs.io catalog tagged Stocks, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.
Providers
70
all scored
Mean Kin Score
39
+18.3 vs catalog 20.7
Mean Agent Readiness
23.5
+13.8 vs catalog 9.7
Spread
2.6–76.7
median 40.1 · σ 18.7
How the 70 split by band
Exemplar 4Strong 11Developing 22Thin 17Emerging 7Minimal 9
Facet averages, against the whole catalog
| Facet | This cohort | Catalog | Difference | Scored |
|---|---|---|---|---|
| Developer Ergonomics | 42.2 | 17.9 | +24.3 | 70 |
| Contract Quality | 35.5 | 17.5 | +18 | 70 |
| Access Clarity | 38.6 | 22.3 | +16.3 | 70 |
| Operational Transparency | 26.1 | 11.3 | +14.8 | 70 |
| Discoverability | 74.2 | 60.4 | +13.8 | 70 |
| Contract Governance | 14.9 | 6.4 | +8.5 | 70 |
A facet is averaged over the members that carry it, not over the whole cohort — the “Scored” column is that count. Averaging an absent facet as zero would score our own coverage gaps as the providers’ posture.
What this cohort publishes
| Artifact | This cohort | Catalog | Difference |
|---|---|---|---|
| MCP server (any) | 53% | 16% | +37 |
| MCP server (first-party) | 24% | 7% | +17 |
| Agent Skills | 0% | 0% | 0 |
| OAuth scopes | 21% | 9% | +12 |
| Security | 94% | 88% | +6 |
| Arazzo workflows | 3% | 2% | +1 |
| Governance rules | 30% | 13% | +17 |
mcp_pct counts any mcp/ artifact including ones API Evangelist derived from the provider OpenAPI; mcp_first_party_pct counts only servers the provider publishes. Prefer the latter.
Top by Kin Score
- 1 Twelve Data 76.7
- 2 Financial Modeling Prep 72.8
- 3 Polygon 71.5
- 4 Market Data 67.6
- 5 SiftingIO 66.1
- 6 ThetaData 65.2
- 7 EODHD 64.9
- 8 Bloomberg 63.8
- 9 Alpaca 62.7
- 10 Tradier 61.4
Top by Agent Readiness
- 1 EODHD 66.3
- 2 Polygon 57.3
- 3 Morningstar 56.8
- 4 Alpha Vantage 55.9
- 5 Alpaca 51.3
- 6 Twelve Data 48.7
- 7 Intrinio 46.8
- 8 SIX 46.2
- 9 Tradier 45.5
- 10 Bargo Congress Trades API 44.8
All 70 members of this roster resolve to a scored provider in
the catalog.Generated from the catalog build of
25 August 2026, across 26891
providers, using the same computation served by the
APIs.io cohort API. Briefs are published for rosters of
5 or more scored providers; below that a distribution is not meaningful.
Work with this as data
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Tools for tags
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find_tagsBrowse and filter every tag in the catalog.get_cohortThis tag as a scored cohort — every provider carrying it, with scores.cohort_statsPRO — the distribution across this tag: mean, median, band split, adoption rates.cohort_rankingsPRO — the leaderboard, on composite AND agent-readiness axes.apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.resolveTurn a domain, URL or GitHub org into the provider it belongs to.find_cohortsEvery scored population of providers in the catalog.
Call it yourself
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This tag
curl "https://apis.io/api/v1/tags/stocks"
All tags
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As a scored cohort
curl "https://apis.io/api/v1/cohorts/tag/stocks"
The distribution (Pro)
curl "https://apis.io/api/v1/cohorts/tag/stocks/stats" \
-H "X-API-Key: $APIS_IO_KEY"Discovery needs no key. Ratings and market analysis are Pro.