generated: '2026-07-22'
method: derived
source: openapi/barchart-ondemand-official-openapi.yml
description: >-
  Entity graph of the Barchart OnDemand API, derived from the official
  OpenAPI 3.0.3 (71 operations). OnDemand is a read-only market-data surface:
  there are no writable resources, and the join key across nearly every
  entity is the instrument symbol (equities, futures, options, forex, crypto,
  indexes) plus exchange codes. Entities below group the response families by
  the operations that return them.
join_keys:
- name: symbol
  description: >-
    Instrument identifier used by 41 of 71 operations (symbols list param on
    28, singular symbol on 13); connects quotes, history, profiles,
    fundamentals, corporate actions, technicals, and news.
- name: exchange
  description: Exchange code scoping bulk endpoints (getEquitiesByExchange, getFuturesByExchange, getCorporateActionsByExchange).
entities:
- name: Quote
  operations: [get-getQuote, get-getQuoteEod, get-getClosePrice, get-getCrypto]
  description: Current, end-of-day, and close price snapshots for a symbol.
- name: HistoryBar
  operations: [get-getHistory, get-getCryptoHistory, get-getRestrictedSessionHistory, get-getRestrictedSessionOHLCPrices]
  description: Tick/minute/daily time-series bars for a symbol over a date window.
- name: Instrument
  operations: [get-getInstrumentDefinition, get-getSymbolChange, get-getRelatedInstruments, get-getFuturesSpecifications, get-getFuturesExpirations]
  description: Reference metadata defining an instrument and its lifecycle.
- name: EquityListing
  operations: [get-getEquitiesByExchange, get-getIndexMembers, get-getSectors, get-getLeaders, get-getHighsLows]
  description: Bulk equity listings by exchange, index membership, sector, and leaderboards.
- name: FuturesContract
  operations: [get-getFuturesByExchange, get-getFuturesSpreads, get-getForexForwardCurves]
  description: Futures contracts, spreads, and forward curves.
- name: OptionContract
  operations: [get-getFuturesOptions, get-getFuturesOptionsEOD, get-getEquityOptions, get-getEquityOptionsHistory, get-getSpecialOptions, get-getOptionsScreener]
  description: Equity/futures option chains, histories, and screeners.
- name: CompanyProfile
  operations: [get-getProfile, get-getCompetitors, get-getRatings]
  description: Company identity, competitors, and analyst ratings for a symbol.
- name: FinancialStatement
  operations: [get-getFinancialHighlights, get-getFinancialRatios, get-getIncomeStatements, get-getBalanceSheets, get-getCashFlow]
  description: Fundamentals statements and ratios for a company.
- name: CorporateAction
  operations: [get-getCorporateActions, get-getCorporateActionsByExchange, get-getDividendData, get-getDividendStocks]
  description: Splits, dividends, and other corporate actions.
- name: CalendarEvent
  operations: [get-getEarningsCalendar, get-getDividendsCalendar, get-getEarningsAndDividendsCalendar, get-getEarningsEstimates, get-getCmdtyCalendar]
  description: Earnings, dividend, and commodity calendar events.
- name: ETF
  operations: [get-getETFDetails, get-getETFConstituents]
  description: ETF metadata and constituent holdings.
- name: TechnicalStudy
  operations: [get-getTechnicals, get-getSignal, get-getMomentum, get-getTechnicalIndicatorData, get-getChart]
  description: Technical indicators, signals, momentum, and chart renders for a symbol.
- name: NewsArticle
  operations: [get-getNews, get-getNewsSources, get-getNewsCategories, get-getSECFilings]
  description: News stories, sources, categories, and SEC filings.
- name: CommodityRecord
  operations: [get-getGrainBids, get-getUSDAGrainPrices, get-getCmdtyStats, get-getCmdtyStatsId, get-getGrainInstruments, get-getBLSIndexes, get-getFuelPrices]
  description: Physical commodity data - grain bids, USDA prices, statistics, fuel, BLS indexes.
- name: WeatherObservation
  operations: [get-getWeather]
  description: Current conditions and forecasts for agricultural regions.
relationships:
- {from: Quote, to: Instrument, kind: belongs_to, via: symbol}
- {from: HistoryBar, to: Instrument, kind: belongs_to, via: symbol}
- {from: OptionContract, to: Instrument, kind: belongs_to, via: root/underlying symbol}
- {from: FuturesContract, to: Instrument, kind: belongs_to, via: root symbol}
- {from: CompanyProfile, to: Instrument, kind: has_one, via: symbol}
- {from: CompanyProfile, to: FinancialStatement, kind: has_many, via: symbol}
- {from: CompanyProfile, to: CorporateAction, kind: has_many, via: symbol}
- {from: CompanyProfile, to: CalendarEvent, kind: has_many, via: symbol}
- {from: ETF, to: EquityListing, kind: has_many, via: constituent symbols}
- {from: Instrument, to: TechnicalStudy, kind: has_many, via: symbol}
- {from: Instrument, to: NewsArticle, kind: has_many, via: symbol}
- {from: EquityListing, to: Instrument, kind: has_many, via: exchange}