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 3 Complete, well-documented, and agent-ready

Upstox Fundamentals APIThe Fundamentals API from Upstox — 8 operation(s) for fundamentals.80.0 Twelve Data Fundamentals APICompany profiles, statements, dividends, earnings, and analysis.73.3 Factset Fundamentals APIThe Fundamentals API from Factset — 1 operation(s) for fundamentals.67.9

Strong 6 Solid coverage with minor gaps

SiftingIO Live StreamWebSocket streaming API for live market data, described by an AsyncAPI 3.0 contract. Also offers a document...63.9 SiftingIO MCP ServerLOCALLY-RUN MCP server, not a hosted endpoint. The client launches it (`npx -y siftingio-mcp`, or the Pytho...63.9 EODHD Fundamental Data APIProvides company fundamentals including general info, financial statements (income statement, balance sheet...61.8 EODHD Fundamentals APIFundamental data for stocks and companies61.8 drillr Data MCP ServerHosted Streamable HTTP MCP server (drillr-data) exposing the same financial data as ~10 agent-callable tool...55.3 Daloopa Fundamentals APIFinancial Fundamentals Data54.7

Developing 11 Usable, with meaningful gaps to close

J-Quants Financials APICorporate financial data under /v2/fins/* - summary report figures (EPS, forecasts), detailed BS/PL/CF stat...53.4 Benzinga Fundamentals APIThe Fundamentals API from Benzinga — 20 operation(s) for fundamentals.52.5 EOD Historical Data Fundamentals APIFundamental data for stocks and companies49.4 QUODD Fundamentals & Estimates APICompany fundamentals, metrics, ratios, and analyst estimates on global securities for fundamental analysis....46.8 Finage Fundamentals APIThe Fundamentals API from Finage — 40 operation(s) for fundamentals.45.8 Tiingo Fundamentals APIThe Fundamentals API from Tiingo — 4 operation(s) for fundamentals.45.0 FinancialData.Net MCP ServerHosted MCP server mapping the entire REST API documentation into callable MCP tools (e.g., getStockSymbols,...43.3 FinancialData.Net REST APIREST API for financial and market data covering equities, ETFs, crypto, forex, derivatives, fundamentals, f...43.3 Xignite FactSet Fundamentals APICompany fundamentals and financial statement data sourced from FactSet, served from the factsetfundamentals...40.7 Xignite Global Fund Fundamentals APIFund fundamental data - holdings, performance, and profile details for mutual funds and ETFs - from the glo...40.7 Bolsai Fundamentals APIThe Fundamentals API from Bolsai — 4 operation(s) for fundamentals.39.7

Thin 4 Limited public surface area

TD Ameritrade Instruments APIThe Instruments API from TD Ameritrade — 2 operation(s) for instruments.35.6 brapi Fundamentals APIAccess structured financial statement data for Brazilian listed companies including balance sheets (BP), in...32.0 Bloomberg Data License APIProvides programmatic access to Bloomberg's comprehensive financial data including pricing, reference data,...31.5 Messari REST APIComprehensive REST API exposing /v1, /v2 endpoints for asset metrics (price, market cap, ROI, mining stats,...29.9

Emerging 1 Early or largely undocumented

QuoteMedia OnDemand (QMOD) Data APICloud-based request/response REST API delivering real-time and delayed Level 1/Level 2 quotes, trades, hist...22.0

Minimal 2 Almost no public developer surface

drillr Data MCP ServerHosted Streamable HTTP MCP server (drillr-data) exposing the same financial data as ~10 agent-callable tool...2.6 drillr REST APIREST API exposing ~29 endpoints across company discovery, filings, signals, events, ownership, executives, ...2.6

Companies reaching this through an API (10)

These companies publish an API, specification or operation carrying “Fundamentals” but do not classify their business under it. Listed unranked and kept out of the count above, because one tagged operation is not a statement about what a company does.

Benzinga Bloomberg Professional Service brapi Daloopa Factset JPX (Japan Exchange Group) QUODD TD Ameritrade Upstox Xignite

Score breakdown

Frequency

48.5

log-scaled weighted occurrences

Breadth

0.5

spread across providers

Quality lift

53.3

mean composite of providers using it

Cohesion

0.0

strength of nearest seed neighbor

Where this tag comes from

Provider tag17

Api tag27

Openapi tag9

Openapi op tag50

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Fundamentals

Providers using this tag (17)

APIs with this tag (27)