Twelve Data website screenshot

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 APIs 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, Forex, and Crypto.

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.

🌐 Visit website 📡 Source on GitHub
74.0/100 exemplar ▬ flat Agent 58/100 agent ready saas Full breakdown ↓
scored 2026-09-06 · rubric v0.19.0
AccessPaid
2 APIs 1 MCP Servers
Market DataFinancial DataStocksForexCryptoReal-Time DataTechnical IndicatorsFundamentals

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-06 · rubric v0.19.0
Composite quality — 74.0/100 · exemplar
Contract Quality 13.2 / 21
Developer Ergonomics 13.9 / 17
Access Clarity 17.0 / 17
Operational Transparency 7.6 / 11
Contract Governance 1.6 / 10
Discoverability 6.5 / 9
Regulatory Posture 9.0 / 15
Agent readiness — 58/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
Documented Reversibility 6 / 6
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 7 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 6 / 6
Agent Skills 5 / 5
Well-Known Catalog 4 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Delegated User Identity 6 / 6
Protected Resource Metadata 0 / 5
Registration Without a Human 6 / 6
Agentic Commerce Well-Known Document 0 / 5
Regulatory Posture applies to this provider. Its tags matched the Securities & Market Data regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.
The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/twelvedata: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

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 Etfs API

The etfs API from Twelve Data — 8 operation(s) for etfs.

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.

Scroll for all 15

Postman Collections 6

Ready-to-run Postman collections for exercising this provider's APIs.

Twelve Data REST Core Data API

POSTMAN

Twelve Data REST Core Data Fundamentals API

POSTMAN

Twelve Data API

POSTMAN

Twelve Data REST Core Data Reference Data API

POSTMAN

Twelve Data REST Core Data Technical Indicators API

POSTMAN

Twelve Data REST Core Data Time Series API

POSTMAN

Open Collections 8

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

Twelve Data REST Core Data API

OPEN COLLECTION

Twelve Data REST Core Data Fundamentals API

OPEN COLLECTION

Twelve Data API

OPEN COLLECTION

Twelve Data REST Core Data Reference Data API

OPEN COLLECTION

Twelve Data REST Core Data Technical Indicators API

OPEN COLLECTION

Twelve Data REST Core Data Time Series API

OPEN COLLECTION

Twelve Data REST API

OPEN COLLECTION

Scroll for all 8

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Twelve Data MCP Server

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Twelvedata Plans Pricing

5 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Twelvedata Rate Limits

3 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Twelvedata Finops

FINOPS

Event 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...

ASYNCAPI

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Twelve Data API Rules

8 rules · 1 errors 7 warnings

SPECTRAL

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Twelvedata Authentication

apiKey · 2 schemes

SECURITY

Twelvedata Domain Security

TLSv1.3 · DMARC

SECURITY

Twelvedata Trust Center

SOC 2, GDPR

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Twelvedata Agentic Access

26 operations

26 operations · 0 acting

AGENTIC

Resources

Get Started 4

Portal, sign-up, and the first successful call

Sandbox
Sandbox
 DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted
 SignUp
SignUp

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess
 WellKnown
WellKnown
 MCPServer
MCPServer
 LLMsTxt
LLMsTxt
 AgentSkill
AgentSkill

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conformance
Conformance
 ErrorCatalog
ErrorCatalog
 Lifecycle
Lifecycle
 Conventions
Conventions
 Components
Components
 DataModel
DataModel

Build 6

SDKs, sample code, and the tooling you integrate with

PostmanWorkspace
PostmanWorkspace
 Packages
Packages
 SDKs
SDKs
 CLI
CLI
 ToolCrosswalk
ToolCrosswalk
 GitHubOrganization
GitHubOrganization

Access & Security 4

Authentication, authorization, and security posture

TrustCenter
TrustCenter
 DomainSecurity
DomainSecurity
 Authentication
Authentication
 Compliance
Compliance

Operate 5

Status, limits, changes, and where to get help

RateLimits
RateLimits
 Support
Support
 StatusPage
StatusPage
 Roadmap
Roadmap
 ChangeLog
ChangeLog

Commercial 5

Pricing, plans, and the legal terms of use

Plans
Plans
 FinOps
FinOps
 Pricing
Pricing
 TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 3

The organization behind the API

LinkedIn
LinkedIn
 Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: twelvedata
url: https://raw.githubusercontent.com/api-evangelist/twelvedata/refs/heads/main/apis.yml
name: Twelve Data
kind: company
description: 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.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: high
  source:
  - plans
  - authentication
  - security
  - sandbox
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/twelvedata.png
tags:
- Market Data
- Financial Data
- Stocks
- Forex
- Crypto
- Real-Time Data
- Technical Indicators
- Fundamentals
created: '2026-07-11'
modified: '2026-07-22'
specificationVersion: '0.23'
apis:
- aid: twelvedata:twelvedata-websocket-streaming-api
  name: Twelve Data WebSocket Streaming API
  tags:
  - Real-Time Data
  - WebSocket
  - Streaming
  - Market Data
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://twelvedata.com/docs/websocket/ws-real-time-price
  baseURL: wss://ws.twelvedata.com/v1/quotes/price
  properties:
  - url: https://twelvedata.com/docs/websocket/ws-real-time-price
    type: Documentation
  - url: asyncapi/twelvedata-asyncapi.yml
    type: AsyncAPI
  description: 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 subscribe / unsubscribe / reset control messages, and receive
    pushed price events (roughly 170ms average latency), subscribe-status acknowledgements, and heartbeats.
- aid: twelvedata:twelvedata-core-data-api
  name: Twelve Data Core Data API
  description: Real-time quotes, latest prices, and end-of-day data.
  humanURL: https://twelvedata.com/docs#time-series
  baseURL: https://api.twelvedata.com
  tags:
  - Core Data
  properties:
  - type: OpenAPI
    url: openapi/twelvedata-core-data-api-openapi.yml
  - type: Overlay
    url: overlays/twelvedata-core-data-api-overlay.yaml
  - type: Documentation
    url: https://twelvedata.com/docs#time-series
  - type: PostmanCollection
    url: collections/twelvedata.postman_collection.json
  - type: OpenCollection
    url: collections/twelvedata.opencollection.json
  - type: Documentation
    url: https://twelvedata.com/docs#core-data
  - type: Documentation
    url: https://twelvedata.com/docs#technical-indicators
  - type: Documentation
    url: https://twelvedata.com/docs#reference-data
  - type: Documentation
    url: https://twelvedata.com/docs#fundamentals
- aid: twelvedata:twelvedata-fundamentals-api
  name: Twelve Data Fundamentals API
  description: Company profiles, statements, dividends, earnings, and analysis.
  humanURL: https://twelvedata.com/docs#time-series
  baseURL: https://api.twelvedata.com
  tags:
  - Fundamentals
  properties:
  - type: OpenAPI
    url: openapi/twelvedata-fundamentals-api-openapi.yml
  - type: Overlay
    url: overlays/twelvedata-fundamentals-api-overlay.yaml
  - type: Documentation
    url: https://twelvedata.com/docs#time-series
  - type: PostmanCollection
    url: collections/twelvedata.postman_collection.json
  - type: OpenCollection
    url: collections/twelvedata.opencollection.json
  - type: Documentation
    url: https://twelvedata.com/docs#core-data
  - type: Documentation
    url: https://twelvedata.com/docs#technical-indicators
  - type: Documentation
    url: https://twelvedata.com/docs#reference-data
  - type: Documentation
    url: https://twelvedata.com/docs#fundamentals
- aid: twelvedata:twelvedata-reference-data-api
  name: Twelve Data Reference Data API
  description: Catalogs of instruments, exchanges, and supporting metadata.
  humanURL: https://twelvedata.com/docs#time-series
  baseURL: https://api.twelvedata.com
  tags:
  - Reference Data
  properties:
  - type: OpenAPI
    url: openapi/twelvedata-reference-data-api-openapi.yml
  - type: Overlay
    url: overlays/twelvedata-reference-data-api-overlay.yaml
  - type: Documentation
    url: https://twelvedata.com/docs#time-series
  - type: PostmanCollection
    url: collections/twelvedata.postman_collection.json
  - type: OpenCollection
    url: collections/twelvedata.opencollection.json
  - type: Documentation
    url: https://twelvedata.com/docs#core-data
  - type: Documentation
    url: https://twelvedata.com/docs#technical-indicators
  - type: Documentation
    url: https://twelvedata.com/docs#reference-data
  - type: Documentation
    url: https://twelvedata.com/docs#fundamentals
- aid: twelvedata:twelvedata-technical-indicators-api
  name: Twelve Data Technical Indicators API
  description: 100+ technical analysis indicators computed over time series.
  humanURL: https://twelvedata.com/docs#time-series
  baseURL: https://api.twelvedata.com
  tags:
  - Technical Indicators
  properties:
  - type: OpenAPI
    url: openapi/twelvedata-technical-indicators-api-openapi.yml
  - type: Overlay
    url: overlays/twelvedata-technical-indicators-api-overlay.yaml
  - type: Documentation
    url: https://twelvedata.com/docs#time-series
  - type: PostmanCollection
    url: collections/twelvedata.postman_collection.json
  - type: OpenCollection
    url: collections/twelvedata.opencollection.json
  - type: Documentation
    url: https://twelvedata.com/docs#core-data
  - type: Documentation
    url: https://twelvedata.com/docs#technical-indicators
  - type: Documentation
    url: https://twelvedata.com/docs#reference-data
  - type: Documentation
    url: https://twelvedata.com/docs#fundamentals
- aid: twelvedata:twelvedata-time-series-api
  name: Twelve Data Time Series API
  description: Historical and real-time OHLCV time series.
  humanURL: https://twelvedata.com/docs#time-series
  baseURL: https://api.twelvedata.com
  tags:
  - Time Series
  properties:
  - type: OpenAPI
    url: openapi/twelvedata-time-series-api-openapi.yml
  - type: Overlay
    url: overlays/twelvedata-time-series-api-overlay.yaml
  - type: Documentation
    url: https://twelvedata.com/docs#time-series
  - type: PostmanCollection
    url: collections/twelvedata.postman_collection.json
  - type: OpenCollection
    url: collections/twelvedata.opencollection.json
  - type: Documentation
    url: https://twelvedata.com/docs#core-data
  - type: Documentation
    url: https://twelvedata.com/docs#technical-indicators
  - type: Documentation
    url: https://twelvedata.com/docs#reference-data
  - type: Documentation
    url: https://twelvedata.com/docs#fundamentals
- aid: twelvedata:twelvedata-advanced-api
  name: Twelve Data Advanced API
  description: The advanced API from Twelve Data — 2 operation(s) for advanced.
  humanURL: https://twelvedata.com/docs/websocket/ws-real-time-price
  baseURL: wss://ws.twelvedata.com/v1/quotes/price
  tags:
  - Advanced
  tags_raw:
  - advanced
  properties:
  - type: OpenAPI
    url: openapi/twelvedata-advanced-api-openapi.yml
- aid: twelvedata:twelvedata-analysis-api
  name: Twelve Data Analysis API
  description: The analysis API from Twelve Data — 9 operation(s) for analysis.
  humanURL: https://twelvedata.com/docs/websocket/ws-real-time-price
  baseURL: wss://ws.twelvedata.com/v1/quotes/price
  tags:
  - Analysis
  tags_raw:
  - analysis
  properties:
  - type: OpenAPI
    url: openapi/twelvedata-analysis-api-openapi.yml
- aid: twelvedata:twelvedata-currencies-api
  name: Twelve Data Currencies API
  description: The currencies API from Twelve Data — 2 operation(s) for currencies.
  humanURL: https://twelvedata.com/docs/websocket/ws-real-time-price
  baseURL: wss://ws.twelvedata.com/v1/quotes/price
  tags:
  - Currency
  tags_raw:
  - currencies
  properties:
  - type: OpenAPI
    url: openapi/twelvedata-currencies-api-openapi.yml
- aid: twelvedata:twelvedata-etfs-api
  name: Twelve Data Etfs API
  description: The etfs API from Twelve Data — 8 operation(s) for etfs.
  humanURL: https://twelvedata.com/docs/websocket/ws-real-time-price
  baseURL: wss://ws.twelvedata.com/v1/quotes/price
  tags:
  - ETFs
  tags_raw:
  - etfs
  properties:
  - type: OpenAPI
    url: openapi/twelvedata-etfs-api-openapi.yml
- aid: twelvedata:twelvedata-market-data-api
  name: Twelve Data Market Data API
  description: The market_data API from Twelve Data — 6 operation(s) for market_data.
  humanURL: https://twelvedata.com/docs/websocket/ws-real-time-price
  baseURL: wss://ws.twelvedata.com/v1/quotes/price
  tags:
  - Market Data
  tags_raw:
  - market_data
  properties:
  - type: OpenAPI
    url: openapi/twelvedata-market-data-api-openapi.yml
- aid: twelvedata:twelvedata-money-market-funds-api
  name: Twelve Data Money Market Funds API
  description: The money_market_funds API from Twelve Data — 2 operation(s) for money_market_funds.
  humanURL: https://twelvedata.com/docs/websocket/ws-real-time-price
  baseURL: wss://ws.twelvedata.com/v1/quotes/price
  tags:
  - Money Market Funds
  tags_raw:
  - money_market_funds
  properties:
  - type: OpenAPI
    url: openapi/twelvedata-money-market-funds-api-openapi.yml
- aid: twelvedata:twelvedata-mutual-funds-api
  name: Twelve Data Mutual Funds API
  description: The mutual_funds API from Twelve Data — 11 operation(s) for mutual_funds.
  humanURL: https://twelvedata.com/docs/websocket/ws-real-time-price
  baseURL: wss://ws.twelvedata.com/v1/quotes/price
  tags:
  - Mutual Funds
  tags_raw:
  - mutual_funds
  properties:
  - type: OpenAPI
    url: openapi/twelvedata-mutual-funds-api-openapi.yml
- aid: twelvedata:twelvedata-regulatory-api
  name: Twelve Data Regulatory API
  description: The regulatory API from Twelve Data — 7 operation(s) for regulatory.
  humanURL: https://twelvedata.com/docs/websocket/ws-real-time-price
  baseURL: wss://ws.twelvedata.com/v1/quotes/price
  tags:
  - Regulatory
  tags_raw:
  - regulatory
  properties:
  - type: OpenAPI
    url: openapi/twelvedata-regulatory-api-openapi.yml
- aid: twelvedata:twelvedata-technical-indicator-api
  name: Twelve Data Technical Indicator API
  description: The technical_indicator API from Twelve Data — 102 operation(s) for technical_indicator.
  humanURL: https://twelvedata.com/docs/websocket/ws-real-time-price
  baseURL: wss://ws.twelvedata.com/v1/quotes/price
  tags: []
  tags_raw:
  - technical_indicator
  properties:
  - type: OpenAPI
    url: openapi/twelvedata-technical-indicator-api-openapi.yml
common:
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/twelve-data/overview
- type: TrustCenter
  url: security/twelvedata-trust-center.yml
- type: DomainSecurity
  url: security/twelvedata-domain-security.yml
- type: AgenticAccess
  url: agentic-access/twelvedata-agentic-access.yml
- type: Authentication
  url: authentication/twelvedata-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/twelve-data
- type: Website
  url: https://twelvedata.com
- type: Documentation
  url: https://twelvedata.com/docs
- type: Plans
  url: plans/twelvedata-plans-pricing.yml
- type: RateLimits
  url: rate-limits/twelvedata-rate-limits.yml
- type: FinOps
  url: finops/twelvedata-finops.yml
- url: https://support.twelvedata.com
  type: Support
- url: https://twelvedata.com/blog
  type: Blog
- type: Packages
  url: packages/twelvedata-packages.yml
- type: SDKs
  url: packages/twelvedata-packages.yml
- type: CLI
  url: cli/twelvedata-cli.yml
- type: WellKnown
  url: well-known/twelvedata-well-known.yml
- type: MCPServer
  url: mcp/twelvedata-mcp.yml
- type: ToolCrosswalk
  url: mcp/twelvedata-tool-crosswalk.yml
- type: LLMsTxt
  url: llms/twelvedata-llms.txt
- type: Conformance
  url: conformance/twelvedata-conformance.yml
- type: Compliance
  url: https://security.twelvedata.com/
- type: ErrorCatalog
  url: errors/twelvedata-problem-types.yml
- type: Lifecycle
  url: lifecycle/twelvedata-lifecycle.yml
- type: StatusPage
  url: https://twelvedata.isitup.cloud
- type: Roadmap
  url: https://roadmap.twelvedata.com/
- type: ChangeLog
  url: changelog/twelvedata-changelog.yml
- type: Conventions
  url: conventions/twelvedata-conventions.yml
- type: Sandbox
  url: sandbox/twelvedata-sandbox.yml
- type: Components
  url: components/twelvedata-components.yml
- type: DataModel
  url: data-model/twelvedata-data-model.yml
- type: AgentSkill
  url: skills/_index.yml
- type: DeveloperPortal
  url: https://twelvedata.com/account
- type: APIReference
  url: https://twelvedata.com/docs
- type: GettingStarted
  url: https://twelvedata.com/docs
- type: Pricing
  url: https://twelvedata.com/pricing
- type: SignUp
  url: https://twelvedata.com/register
- type: TermsOfService
  url: https://twelvedata.com/terms
- type: PrivacyPolicy
  url: https://twelvedata.com/privacy
- type: GitHubOrganization
  url: https://github.com/twelvedata
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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