> ## Documentation Index > Fetch the complete documentation index at: https://docs.activeviam.com/llms.txt > Use this file to discover all available pages before exploring further. # Retrieve borrow curves for multiple equities. > Use this operation to retrieve provider-scoped borrow curves for a collection of equity identifiers on one market date. Each curve is returned under its input identifier with maturity day offsets and expiry dates. Unsupported identifiers or unavailable curves are reported per instrument instead of suppressing other results. ## OpenAPI ````yaml /risk-and-pricing/atoti-risk-services/apis-endpoints/openapi/openapi.mintlify.json post /api/MarketData/GetBorrowCurves openapi: 3.0.4 info: title: Derivitec Api 1.0 version: '1.0' servers: - url: https://api.riskportal.activeviam.com security: - oauth2: [] - apikey: [] tags: - name: AdminUser - name: AtotiReport - name: AtotiSession - name: BloombergOAuth - name: Bond - name: BondYieldCurvePage - name: BookAccess - name: Books - name: Commodity - name: Counterparties - name: Currencies - name: Equity - name: EquityDividend - name: EquityPage - name: FeatureFlag - name: Fx - name: FxPage - name: GroupAccess - name: Home - name: LegacyPosition - name: MarketData - name: MarketDataProvider - name: MarketDataProviderAccess - name: Meta - name: Notification - name: Organisation - name: PnLReport - name: PortfolioAccess - name: Portfolios - name: Position - name: PositionFilter - name: PricingEnvironment - name: PricingEnvironmentAccess - name: RateAsset - name: RateAssetPage - name: Report - name: ReportDefinition - name: ReportHistoryLauncherQuery - name: ReportLauncher - name: ReportQuery - name: ReportQueryViewUser - name: ReportRestriction - name: ReportView - name: RiskReport - name: Tradable - name: TradeBooking - name: User - name: VarReport - name: VarReportQuery - name: YieldCurvePage paths: /api/MarketData/GetBorrowCurves: post: tags: - MarketData summary: Retrieve borrow curves for multiple equities. description: >- Use this operation to retrieve provider-scoped borrow curves for a collection of equity identifiers on one market date. Each curve is returned under its input identifier with maturity day offsets and expiry dates. Unsupported identifiers or unavailable curves are reported per instrument instead of suppressing other results. operationId: GetBorrowCurves requestBody: description: >- The query payload. `Identifiers` must not be null, `MarketDate` is interpreted as a date only, and provider or environment fields select the source; `ReturnForwardRates` defaults to `true`, while `false` requests zero rates. content: application/json-patch+json: schema: $ref: '#/components/schemas/ApiGetBorrowCurvesDataRequest' application/json: schema: $ref: '#/components/schemas/ApiGetBorrowCurvesDataRequest' text/json: schema: $ref: '#/components/schemas/ApiGetBorrowCurvesDataRequest' application/*+json: schema: $ref: '#/components/schemas/ApiGetBorrowCurvesDataRequest' responses: '200': description: >- Returns available curves and any additional day-1 or day-3650 boundary points, keyed by input identifier, together with missing-curve errors. content: application/json: schema: $ref: '#/components/schemas/ApiGetBorrowCurvesDataResponse' '400': description: BadRequest '401': description: Unauthorized '403': description: Forbidden security: - oauth2: [] - apikey: [] components: schemas: ApiGetBorrowCurvesDataRequest: required: - $type type: object properties: market_date: type: string description: Market date used by the derived request. format: date-time provider_id: type: string description: >- Opaque identifier of a single market-data provider to use instead of either environment-name option. nullable: true entity_access_type: enum: - view - edit - owner - blocked type: string description: >- Access classification associated with the selected market-data environment. market_data_environment_names: type: array items: type: string description: >- Names of the market-data environments to use. Do not combine this list with the single-name or provider-ID alternatives. nullable: true market_data_environment_name: type: string description: >- Single market-data environment name to use instead of `market_data_environment_names` or `provider_id`. nullable: true example: Example market data identifiers: type: array items: $ref: '#/components/schemas/InstrumentIdentifier' description: Instrument selectors whose borrow curves are requested. nullable: true return_forward_rates: type: boolean description: >- True requests forward rates and false requests zero rates; defaults to `true`. $type: type: string enum: - >- Derivitec.Web.Core.MarketData.ApiGetBorrowCurvesDataRequest, Derivitec.Web.Core additionalProperties: false description: >- Selects multiple borrow curves and chooses forward-rate or zero-rate output. ApiGetBorrowCurvesDataResponse: required: - $type type: object properties: is_success: type: boolean description: >- Whether the operation completed successfully. The default is `true`; error outcomes set it to `false`. example: true error_messages: type: array items: type: string description: >- Messages explaining operation-level failures. The collection is empty by default. nullable: true curve_data: type: array items: $ref: >- #/components/schemas/InstrumentIdentifierYieldCurvePointListKeyValuePair description: >- Borrow curves in the requested forward-rate or zero-rate representation. nullable: true additional_standardised_curve_data: type: array items: $ref: >- #/components/schemas/InstrumentIdentifierYieldCurvePointListKeyValuePair description: >- Any day-one or day-3650 boundary points added for each curve that does not already reach those maturities. nullable: true $type: type: string enum: - >- Derivitec.Web.Core.MarketData.ApiGetBorrowCurvesDataResponse, Derivitec.Web.Core additionalProperties: false description: Returns requested borrow curves plus standardized boundary points. InstrumentIdentifier: description: >- Instrument code qualified by an identifier namespace and optional market code. discriminator: propertyName: $type mapping: Derivitec.Web.Core.MarketData.InstrumentIdentifier, Derivitec.Web.Core: '#/components/schemas/InstrumentIdentifierMintlifyShape' Derivitec.Web.Core.MarketData.InstrumentInfo, Derivitec.Web.Core: '#/components/schemas/InstrumentInfo' oneOf: - $ref: '#/components/schemas/InstrumentIdentifierMintlifyShape' - $ref: '#/components/schemas/InstrumentInfo' InstrumentIdentifierYieldCurvePointListKeyValuePair: type: object properties: key: $ref: '#/components/schemas/InstrumentIdentifier' value: type: array items: $ref: '#/components/schemas/YieldCurvePoint' nullable: true additionalProperties: false InstrumentIdentifierMintlifyShape: required: - $type type: object properties: code: type: string description: Instrument code interpreted in the selected identifier namespace. nullable: true identifier_type: enum: - Derivitec - Ric - Bloomberg - Isin - Figi - Sedol - RedCode - RedPairCode - BloombergYellow - XIgniteCode - CBondsId - EdiSecId - EdiSymbol - Cusip - NotSet type: string description: Namespace that determines how the instrument code is interpreted. market_identification_code: type: string description: >- Optional market identification code that further qualifies the instrument code. nullable: true $type: type: string enum: - >- Derivitec.Web.Core.MarketData.InstrumentIdentifier, Derivitec.Web.Core additionalProperties: false description: >- Instrument code qualified by an identifier namespace and optional market code. InstrumentInfo: required: - $type type: object properties: code: type: string description: Instrument code interpreted in the selected identifier namespace. nullable: true identifier_type: enum: - Derivitec - Ric - Bloomberg - Isin - Figi - Sedol - RedCode - RedPairCode - BloombergYellow - XIgniteCode - CBondsId - EdiSecId - EdiSymbol - Cusip - NotSet type: string description: Namespace that determines how the instrument code is interpreted. market_identification_code: type: string description: >- Optional market identification code that further qualifies the instrument code. nullable: true name: type: string description: Human-readable name of the identified instrument. nullable: true $type: type: string enum: - Derivitec.Web.Core.MarketData.InstrumentInfo, Derivitec.Web.Core additionalProperties: false description: Instrument identifier with a human-readable instrument name. YieldCurvePoint: required: - $type type: object properties: expiry: type: string description: Expiry date obtained from the curve's market date and maturity. format: date-time maturity: type: integer description: Calendar days after the curve market date. format: int32 rate: type: number description: Zero rate as a decimal; 0.05 means 5%. format: double fitted_instrument_name: type: string description: Optional display name of the instrument fitted at this point. nullable: true fitted_instrument_rate: type: number description: >- Optional fitted-instrument quote in percentage points reported at this point. format: double nullable: true $type: type: string enum: - Derivitec.Web.Core.MarketData.YieldCurvePoint, Derivitec.Web.Core additionalProperties: false description: >- One dated yield-curve point with maturity, rate, and optional fitted-instrument details. securitySchemes: oauth2: type: oauth2 description: >- OAuth2 access-token requested from AWS Cognito and provided as a Auth Bearer header flows: implicit: authorizationUrl: https://auth.riskportal.derivitec.com/oauth2/authorize scopes: {} apikey: type: apiKey description: API-Key requested via the site and provided as a header name: x-api-key in: header ````