aid: marketdata-app
url: https://raw.githubusercontent.com/api-evangelist/marketdata-app/refs/heads/main/apis.yml
name: Market Data
kind: company
description: >-
  Market Data (marketdata.app) is a financial market data provider offering a
  REST API for real-time and historical U.S. stock, options, and index data.
  The API (base https://api.marketdata.app/v1, Bearer-token authenticated)
  covers stock candles and quotes - single and bulk - plus earnings and news;
  full options chains with per-contract quotes, expirations, strikes, and OCC
  symbol lookup; index candles and quotes; and market open/closed status.
  Responses are JSON or CSV and are billed on a daily API-credit model, where
  multi-symbol responses (bulk quotes, options chains) consume one credit per
  symbol. A 30-day trial, a Free Forever tier, and paid Starter, Trader, and
  Prime plans are available. Note that the API may return HTTP 203 from its
  caching tier and clients must treat it as success.
accessModel:
  pricing: freemium
  onboarding: open
  trial: true
  try_now: true
  public: true
  label: Freemium (free trial) · Open access
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/marketdata-app.png
tags:
- Market Data
- Financial Data
- Stocks
- Options
- Indices
- Real-Time Data
- Historical Data
- Quotes
created: '2026-07-11'
modified: '2026-07-22'
specificationVersion: '0.19'
apis:
- aid: marketdata-app:marketdata-app-indices-api
  name: Market Data Indices API
  description: Real-time and historical index candles and quotes.
  humanURL: https://www.marketdata.app/docs/api/
  baseURL: https://api.marketdata.app/v1
  tags:
  - Indices
  properties:
  - type: OpenAPI
    url: openapi/marketdata-app-indices-api-openapi.yml
  - type: Overlay
    url: overlays/marketdata-app-indices-api-overlay.yaml
  - type: Documentation
    url: https://www.marketdata.app/docs/api/
  - type: PostmanCollection
    url: collections/marketdata-app.postman_collection.json
  - type: OpenCollection
    url: collections/marketdata-app.opencollection.json
- aid: marketdata-app:marketdata-app-markets-api
  name: Market Data Markets API
  description: Reference and status data about the markets covered by Market Data.
  humanURL: https://www.marketdata.app/docs/api/markets/status/
  baseURL: https://api.marketdata.app/v1/markets
  tags:
  - Markets
  properties:
  - type: OpenAPI
    url: openapi/marketdata-app-markets-api-openapi.yml
  - type: Overlay
    url: overlays/marketdata-app-markets-api-overlay.yaml
  - type: Documentation
    url: https://www.marketdata.app/docs/api/markets/status/
  - type: APIReference
    url: https://www.marketdata.app/docs/api/markets/status/
  - type: PostmanCollection
    url: collections/marketdata-app.postman_collection.json
  - type: OpenCollection
    url: collections/marketdata-app.opencollection.json
- aid: marketdata-app:marketdata-app-options-api
  name: Market Data Options API
  description: Options chains, per-contract quotes, expirations, strikes, and OCC symbol lookup.
  humanURL: https://www.marketdata.app/docs/api/options/
  baseURL: https://api.marketdata.app/v1/options
  tags:
  - Options
  properties:
  - type: OpenAPI
    url: openapi/marketdata-app-options-api-openapi.yml
  - type: Overlay
    url: overlays/marketdata-app-options-api-overlay.yaml
  - type: Documentation
    url: https://www.marketdata.app/docs/api/options/
  - type: APIReference
    url: https://www.marketdata.app/docs/api/options/chain/
  - type: PostmanCollection
    url: collections/marketdata-app.postman_collection.json
  - type: OpenCollection
    url: collections/marketdata-app.opencollection.json
- aid: marketdata-app:marketdata-app-stocks-api
  name: Market Data Stocks API
  description: Real-time and historical stock candles, quotes, bulk data, prices, earnings, and news.
  humanURL: https://www.marketdata.app/docs/api/stocks/
  baseURL: https://api.marketdata.app/v1/stocks
  tags:
  - Stocks
  properties:
  - type: OpenAPI
    url: openapi/marketdata-app-stocks-api-openapi.yml
  - type: Overlay
    url: overlays/marketdata-app-stocks-api-overlay.yaml
  - type: Documentation
    url: https://www.marketdata.app/docs/api/stocks/
  - type: APIReference
    url: https://www.marketdata.app/docs/api/stocks/candles/
  - type: PostmanCollection
    url: collections/marketdata-app.postman_collection.json
  - type: OpenCollection
    url: collections/marketdata-app.opencollection.json
common:
- type: OpenAPI
  url: openapi/marketdata-app-openapi-original.yml
- type: DomainSecurity
  url: security/marketdata-app-domain-security.yml
- type: AgenticAccess
  url: agentic-access/marketdata-app-agentic-access.yml
- type: Authentication
  url: authentication/marketdata-app-authentication.yml
- type: Packages
  url: packages/marketdata-app-packages.yml
- type: SDKs
  url: packages/marketdata-app-packages.yml
- type: WellKnown
  url: well-known/marketdata-app-well-known.yml
- type: MCPServer
  url: mcp/marketdata-app-mcp.yml
- type: LLMsTxt
  url: llms/marketdata-app-llms.txt
- type: Conformance
  url: conformance/marketdata-app-conformance.yml
- type: ErrorCatalog
  url: errors/marketdata-app-problem-types.yml
- type: Lifecycle
  url: lifecycle/marketdata-app-lifecycle.yml
- type: StatusPage
  url: https://status.marketdata.app/
- type: ChangeLog
  url: changelog/marketdata-app-changelog.yml
- type: Roadmap
  url: https://roadmap.marketdata.app/
- type: Sandbox
  url: sandbox/marketdata-app-sandbox.yml
- type: Conventions
  url: conventions/marketdata-app-conventions.yml
- type: Components
  url: components/marketdata-app-components.yml
- type: DataModel
  url: data-model/marketdata-app-data-model.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Postman
  url: https://app.getpostman.com/run-collection/27146376-b1331cd2-4749-4708-96fe-2f1708b02854?action=collection%2Ffork&source=rip_markdown&collection-url=entityId%3D27146376-b1331cd2-4749-4708-96fe-2f1708b02854%26entityType%3Dcollection%26workspaceId%3Dbd65af1d-3c36-4e62-ae64-f71008c154b4
- type: GitHubOrganization
  url: https://github.com/MarketDataApp
- type: LinkedIn
  url: https://www.linkedin.com/company/marketdataapp
- type: Website
  url: https://www.marketdata.app
- type: DeveloperPortal
  url: https://www.marketdata.app/dashboard/
- type: Documentation
  url: https://www.marketdata.app/docs/api/
- type: APIReference
  url: https://www.marketdata.app/docs/api/
- type: GettingStarted
  url: https://www.marketdata.app/docs/api/
- type: Support
  url: https://www.marketdata.app/helpdesk/
- type: SignUp
  url: https://www.marketdata.app/signup/
- type: TermsOfService
  url: https://www.marketdata.app/terms/
- type: PrivacyPolicy
  url: https://www.marketdata.app/privacy/
- type: Plans
  url: plans/marketdata-app-plans-pricing.yml
- type: RateLimits
  url: rate-limits/marketdata-app-rate-limits.yml
- type: FinOps
  url: finops/marketdata-app-finops.yml
- type: Pricing
  url: https://www.marketdata.app/pricing/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com