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 →

Strong 12 Solid coverage with minor gaps

S&P Capital IQ ProFlagship desktop and API platform for S&P Global Market Intelligence — company fundamentals, ownership, tra...64.6 S&P Global LLM-Ready API (kFinance)REST API and Model Context Protocol server exposing S&P Capital IQ Financials, Market Data, Business Relati...64.6 MX Platform APIThe MX Platform API aggregates and enhances financial data, connecting apps and websites to tens of thousan...64.3 Bloomberg Market Data APIProvides real-time and historical market data, including stock prices, indices, commodities, and currencies.63.8 BuiltWith Financial APIAccess financial data from SEC Edgar and UK Companies House filings for domains, including revenue, assets,...59.8 Databento Batch APISubmits asynchronous batch jobs that materialize large historical requests into downloadable flat files (DB...58.9 Databento Historical Timeseries APIStreams historical market data over HTTP for a requested date/time range. A single request selects a datase...58.9 Databento Metadata APIDiscovery and cost-estimation endpoints for the historical catalog. List publishers, datasets, schemas, and...58.9 Databento Reference APIReference and non-price data that complements the market data feeds - a security master (instrument definit...58.9 Databento Symbology APIResolves symbols between Databento's symbology systems - raw symbol, instrument ID, parent, and continuous ...58.9 Datarails Data Gateway Service (DGS)REST file-upload endpoint used to push a CSV or Excel file into a Datarails Filebox. Authenticated with HTT...57.7 Datarails FinanceOS MCP ServerHosted Model Context Protocol server that connects an AI assistant to a tenant's Datarails financial data. ...57.7

Developing 29 Usable, with meaningful gaps to close

Yapily Financial Data APIIn order to access a user's Financial Data, you are required to request an [Authorisation](#tag/Authorisati...54.2 73 Strings Financial Data APIThe **Financial Data APIs**, a RESTful service on 73 Strings, allows to retrieve comprehensive information ...52.6 Datastream Web Service APIAPI providing access to Datastream content, the world's leading time series database, via SOAP/XML and REST...50.6 Eikon Data APIPython and R library that allows programmatic access to Refinitiv Eikon data. Provides access to instrument...50.6 Refinitiv Data Library for PythonPython library providing uniform, ease-of-use interfaces for accessing the breadth and depth of financial d...50.6 MX Atrium APIThe legacy MX financial data connectivity API supporting over 48,000 data connections to thousands of finan...48.9 Daloopa API v3REST API over Daloopa's fundamental dataset — company discovery, fundamental series and values, calendar/fi...47.4 Daloopa MCP ServerHosted remote MCP server (Streamable HTTP) exposing nine tools over the same fundamental dataset — discover...47.4 Infoway Financial Data MCP ServerOfficial Model Context Protocol server (PyPI infoway-mcp-server) exposing 17 tools over stdio for real-time...47.2 Infoway WebSocket Streaming APIPersistent WebSocket connection for real-time trades, order-book depth, candlesticks and multilingual news....47.2 Atlar APIResource-oriented JSON REST API for treasury and payment operations. Paths follow /{namespace}/v#/{resource...46.8 FDC3 Context DataFDC3 Context Data defines a standard set of typed data structures used to carry information between financi...46.4 Mastercard Open Banking SolutionsMastercard Open Banking in Europe provides a set of APIs that enables both licensed and unlicensed Third Pa...46.2 Mastercard Open Banking USMastercard Open Banking US (powered by Finicity) provides APIs for financial data aggregation, account veri...46.2 Mastercard Open Finance AustraliaMastercard Open Finance Australia provides APIs for accessing consumer-permissioned financial data in the A...46.2 Mastercard Open Finance USMastercard Open Finance US (formerly Open Banking US / Finicity) provides APIs for financial data aggregati...46.2 ICE Consolidated Feed APIThe ICE Consolidated Feed API provides developers with access to ICE Data Services real-time and delayed ma...46.1 Kensho LLM-ready API (kfinance)LLM-ready API that connects LLMs, agents, and AI applications to S&P Global's trusted data through flexible...44.6 Concur Cards APIProvides an automated integration pathway for certified partner financial networks, issuing banks, and fin-...43.2 Concur Exchange Rate APIAllows users to create custom exchange rates for a company, supporting bulk uploads of exchange rate data f...43.2 Eikon Data APIPython library providing access to financial data, news, and symbology from within the Refinitiv Eikon or L...42.9 Refinitiv Data Library for .NET.NET library providing uniform access to financial data and services available on the LSEG Data Platform. I...42.9 Refinitiv Data Library for PythonPython library providing uniform access to the breadth and depth of financial data and services available o...42.9 Refinitiv Data Platform LibrariesSuite of ease-of-use libraries and interfaces for Python, TypeScript and JavaScript providing access to str...42.9 Refinitiv Knowledge Direct API (RKD)API for wealth management that provides access to Refinitiv hosted content and capabilities. It integrates ...42.9 Bloomberg Data APIProgrammatic access to Bloomberg's financial data including reference data, historical pricing, corporate a...41.2 Verifone Reporting APIProgrammatically retrieve and download settlement, transaction, and financial reports from Verifone's cloud...40.9 CCH Tagetik Financial Data APIThe Financial Data API from CCH Tagetik — 1 operation(s) for financial data.40.3 ZenHR Inc Financial Data APIThe Financial Data API from ZenHR Inc — 3 operation(s) for financial data.40.1

Thin 22 Limited public surface area

Rutter Accounting APIThe Rutter Accounting API provides a unified interface to read and write data to all major accounting platf...39.2 Rutter Payments APIThe Rutter Payments API provides a unified interface to read and write data to all major payment platforms ...39.2 TIAA Gateway APIThe TIAA Gateway is a cloud-based API layer enabling product portability and interoperability across retire...38.8 Stitch Financial Data APIBank account and transaction data.38.2 QUODD Fundamentals & Estimates APICompany fundamentals, metrics, ratios, and analyst estimates on global securities for fundamental analysis....38.1 QUODD Historical Prices APIEnd-of-day and historical market data across 80-plus global exchanges - US equities and ETFs from 1994, glo...38.1 QUODD Reference Data & Security Master APIGlobal reference data and security master (Global Master) - intra-day global equity descriptive data, funds...38.1 Nasdaq Data Link Tables APIREST API for tables data (datatables) — row and column filtered access to hundreds of financial, economic, ...37.8 Quiltt GraphQL Data APISingle GraphQL endpoint for reading an end-user's unified financial data - Profile, Connections, Accounts, ...36.2 S&P Capital IQ Market Intelligence APIComprehensive financial data API providing access to fundamental data, industry-specific and segment data, ...35.8 Insurely Open Finance APICreate end users, capture consent, run data collections (including PSD2 banking data), and retrieve structu...34.1 Xceptor Connector APIAPI and connector framework for integrating Xceptor with external systems and data sources. Provides pre-bu...34.0 NCUA 5300 Call Report DataQuarterly publicly available financial performance data for all federally insured credit unions based on th...32.2 Quiver Quantitative APIThe Quiver Quantitative API provides REST access to alternative financial datasets including Congressional ...31.7 Flanks APIOAuth2-secured wealth-data API covering the Connect flow (connectors, sessions, SCA resolution), Credential...30.8 Band Standard DatasetThe Band Standard Dataset is an open standard for creating and accessing custom price feeds that deliver hi...29.6 GorilaCOREB2B REST API for investment-portfolio consolidation and analytics: create portfolios, ingest transactions, ...29.6 Nasdaq Data Link Tables APIREST API for retrieving Tables-style datasets, supporting filtering by column, query parameters, and large ...29.6 J-Quants APIThe J-Quants API (V2) is a data distribution service operated by Japan Exchange Group (JPX) that makes it e...28.7 Thinknum Data APIToken-authenticated REST API over data.thinknum.com for querying Thinknum's alternative datasets. Endpoints...27.2 Bloomberg Market Data APIProvides access to real-time and historical market data including stocks, bonds, commodities, and currencie...26.6 Mono Financial Data APIRead financial data from a linked account.26.4

Emerging 15 Early or largely undocumented

Ion Group Dealogic Analytics SPAC APIDetailed profiling of Special Purpose Acquisition Companies (SPACs). Gain access to real-time content and a...25.8 Bloomberg Data License APIProvides programmatic access to Bloomberg's comprehensive financial data including pricing, reference data,...23.4 Bloomberg Data APIProvides programmatic access to Bloomberg's financial market data including real-time and historical pricin...19.8 Bloomberg Open API (BLPAPI)Core Bloomberg API providing real-time and reference data access for financial applications across trading,...19.7 Bloomberg Data License APIProvides access to Bloomberg's extensive financial data including real-time quotes, historical data, refere...19.4 Bloomberg Query Language (BQL) APIExecute BQL queries programmatically via the Bloomberg API to retrieve custom computed financial data, filt...19.1 Bloomberg Data APIProvides programmatic access to Bloomberg's extensive financial data including market data, reference data,...18.9 Bloomberg Data License APIProvides batch delivery of Bloomberg's reference, pricing, and analytics data for integration into propriet...17.9 Expand Energy Investor Relations APIFollowing the merger, Expand Energy Corporation's investor relations portal provides access to combined com...16.8 Southwestern Energy Investor Relations APIThe Southwestern Energy investor relations portal provides financial data, shareholder information, earning...16.8 Norgate Data FundamentalsCompany fundamental lookups - named fundamental fields, financial summary, business summary, shares outstan...16.6 Argus Research APIThe Argus Research API provides programmatic access to equity research reports, stock ratings, analyst reco...15.4 Valero Energy SEC EDGAR DataValero Energy Corporation SEC filings and financial data available through the SEC EDGAR system. Includes 1...13.3 SM Energy Investor DataSM Energy Company (NYSE: SM) financial and operational data is accessible through investor relations resour...12.1 Wintrust Open Banking Data Access (Plaid, aggregator-mediated)Wintrust does not expose a direct consumer open-banking API. Third-party applications reach Wintrust / iBus...11.5

Minimal 6 Almost no public developer surface

Antero Resources SEC EDGAR FilingsAntero Resources Corporation (NYSE: AR) files annual reports (10-K), quarterly reports (10-Q), current repo...10.9 Stifel Bank Finicity IntegrationStifel Bank account data accessible via Finicity (Mastercard) open banking aggregation API, enabling third-...10.4 Stifel Bank Plaid IntegrationStifel Trust Company account data accessible via Plaid open banking aggregation API, enabling third-party a...10.4 Finverse Bank Data APIRetrieve real-time financial account information with user consent from over 40 Asian banks. Returns key fi...9.3 Bolsai Financial Data APIREST/JSON API for Brazilian financial-market data — equities, FIIs, fundamentals, dividends, financial stat...7.7 Iress QuantFeedQuantFeed is Iress's signature end-to-end ultra-low latency market data API. Built to deliver an unmatched ...7.2

Score breakdown

Frequency

64.3

log-scaled weighted occurrences

Breadth

4.4

spread across providers

Quality lift

42.3

mean composite of providers using it

Cohesion

14.6

strength of nearest seed neighbor

Where this tag comes from

Provider tag129

Api tag85

Openapi tag6

Openapi op tag32

Cohort brief

Auto-generated

The 160 providers in the APIs.io catalog tagged Financial Data, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers

160

all scored

Mean Kin Score

34.7

+14.0 vs catalog 20.7

Mean Agent Readiness

21.2

+11.5 vs catalog 9.7

Spread

2–76.7

median 36.1 · σ 17.2

How the 160 split by band

Exemplar 4Strong 18Developing 45Thin 41Emerging 35Minimal 17

Facet averages, against the whole catalog

Facet	This cohort	Catalog	Difference	Scored
Contract Quality	36.7	17.5	+19.2	160
Developer Ergonomics	32	17.9	+14.1	160
Access Clarity	35.8	22.3	+13.5	160
Operational Transparency	23	11.3	+11.7	160
Discoverability	70.9	60.4	+10.5	160
Contract Governance	12.9	6.4	+6.5	160

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)	31%	16%	+15
MCP server (first-party)	16%	7%	+9
Agent Skills	0%	0%	0
OAuth scopes	14%	9%	+5
Security	97%	88%	+9
Arazzo workflows	1%	2%	-1
Governance rules	34%	13%	+21

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 Market Data 67.6
4 Pennylane 66.5
5 SiftingIO 66.1
6 Factset 64.8
7 S&P Global 64.6
8 MX 64.3
9 Bloomberg 63.8
10 StockData 63.4

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Financial Data

Providers using this tag (160)

APIs with this tag (84)