Twelve Data
Twelve Data is a financial market data provider offering real-time and historical data for stocks, forex, cryptocurrencies, ETFs, indices, commodities, and funds through a single REST API and a real-time WebSocket. Coverage spans time series (OHLCV), quotes and prices, 100-plus technical indicators, reference and catalog data, and company fundamentals. Every request is authenticated with an apikey and metered as API credits; a free Basic plan grants 800 API credits per day. Real-time price streaming is delivered over a WebSocket at wss://ws.twelvedata.com/v1/quotes/price.
Twelve Data publishes 15 API contracts indexed on the APIs.io network, including WebSocket Streaming API, Core Data API, Fundamentals API, and 12 more. Tagged areas include Market Data, Financial Data, Stocks, Foreign Exchange, and Cryptocurrency.
The Twelve Data catalog on APIs.io includes 1 event-driven AsyncAPI specification and 1 Spectral governance ruleset.
Twelve Data’s developer surface includes authentication, documentation, support, engineering blog, CLI, changelog, sandbox, and 33 more developer resources.
What people ask Twelve Data 14
The questions people put to an LLM, and the jobs they hand an agent, that Twelve Data's APIs answer — each one linked to the operation that does it. Generated by API Evangelist
Showing 12 of 14 APIs with phrasing — see every API.
Kin Score
Markets this provider is in provisional
The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.
| Market | Position | Depth | Registered MCP server | Declares compatibility |
|---|---|---|---|---|
| Capital Markets and Trading | coverage | 46.0 | 1 | - |
Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.
APIs 15
Individual APIs this provider publishes, each with its own machine-readable definition.
Twelve Data WebSocket Streaming API
Real-time price streaming over a persistent, bidirectional WebSocket at wss://ws.twelvedata.com/v1/quotes/price. Clients authenticate with an apikey query parameter, send JSON s...
Twelve Data Core Data API
Real-time quotes, latest prices, and end-of-day data.
Twelve Data Fundamentals API
Company profiles, statements, dividends, earnings, and analysis.
Twelve Data Reference Data API
Catalogs of instruments, exchanges, and supporting metadata.
Twelve Data Technical Indicators API
100+ technical analysis indicators computed over time series.
Twelve Data Time Series API
Historical and real-time OHLCV time series.
Twelve Data Advanced API
The advanced API from Twelve Data — 2 operation(s) for advanced.
Twelve Data Analysis API
The analysis API from Twelve Data — 9 operation(s) for analysis.
Twelve Data Currencies API
The currencies API from Twelve Data — 2 operation(s) for currencies.
Twelve Data Market Data API
The market_data API from Twelve Data — 6 operation(s) for market_data.
Twelve Data Money Market Funds API
The money_market_funds API from Twelve Data — 2 operation(s) for money_market_funds.
Twelve Data Mutual Funds API
The mutual_funds API from Twelve Data — 11 operation(s) for mutual_funds.
Twelve Data Regulatory API
The regulatory API from Twelve Data — 7 operation(s) for regulatory.
Twelve Data Technical Indicator API
The technical_indicator API from Twelve Data — 102 operation(s) for technical_indicator.
Twelve Data Etfs API
The etfs API from Twelve Data — 8 operation(s) for etfs.
Scroll for all 15
Postman Collections 6
Ready-to-run Postman collections for exercising this provider's APIs.
Twelve Data API
POSTMANOpen Collections 8
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONTwelve Data REST Core Data API
OPEN COLLECTIONTwelve Data REST Core Data Fundamentals API
OPEN COLLECTIONTwelve Data API
OPEN COLLECTIONTwelve Data REST Core Data Reference Data API
OPEN COLLECTIONTwelve Data REST Core Data Technical Indicators API
OPEN COLLECTIONTwelve Data REST Core Data Time Series API
OPEN COLLECTIONTwelve Data REST API
OPEN COLLECTIONScroll for all 8
MCP Servers 1
Model Context Protocol servers that expose these APIs to AI agents.
Twelve Data MCP Server
Remote MCP server at mcp.twelvedata.com over streamable HTTP; 27 tools listed.
MCP SERVERPricing Plans 1
Published pricing tiers and plan structures.
Rate Limits 1
Documented rate limits and quota policies.
Twelvedata Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals for API financial operations.
Twelvedata Finops
FINOPSEvent Specifications 1
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Twelve Data Real-Time Price WebSocket
AsyncAPI 2.6 description of Twelve Data's **real-time price WebSocket**. Unlike a one-way HTTP Server-Sent Events stream, this is a genuine, bidirectional WebSocket (`wss://`) s...
ASYNCAPISpectral Rules 1
Spectral governance rulesets for linting and validating these APIs.
Twelve Data — asyncapi rules
SPECTRALOpenAPI Overlays 19
Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.
Twelvedata Advanced Api Phrasing Overlay
GENERATEDTwelvedata Analysis Api Phrasing Overlay
GENERATEDTwelvedata Core Data Api Overlay
UNRECORDEDTwelvedata Etfs Api Phrasing Overlay
GENERATEDTwelvedata Fundamentals Api Overlay
UNRECORDEDTwelvedata Reference Data Api Overlay
UNRECORDEDTwelvedata Technical Indicators Api Overlay
UNRECORDEDTwelvedata Time Series Api Overlay
UNRECORDEDScroll for all 19
Security Posture 3
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
Recommended x-agentic-access execution contracts for AI agents.
Resources
Get Started 4
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 5
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 6
Pagination, idempotency, versioning, errors, and events
Build 6
SDKs, sample code, and the tooling you integrate with
Access & Security 4
Authentication, authorization, and security posture
Operate 5
Status, limits, changes, and where to get help
Commercial 5
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
Source (apis.yml)
Work with this as data
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