> ## Documentation Index > Fetch the complete documentation index at: https://docs.amberdata.io/llms.txt > Use this file to discover all available pages before exploring further. # SVI - Minutely > This endpoint provides calibrated SVI (Stochastic Volatility Inspired) parameters for BTC and ETH options traded on Deribit, with 5-minute granularity. Offering a timely calibration view of the volatility surface. Download the SVI White Paper here: https://go.amberdata.io/hubfs/SVITrueLineWhitepaper.pdf ## OpenAPI ````yaml get /analytics/volatility/svi-minutely openapi: 3.1.0 info: title: derivatives-api version: '2' servers: - url: https://api.amberdata.com/markets/derivatives security: - sec0: [] paths: /analytics/volatility/svi-minutely: get: summary: SVI - Minutely description: > This endpoint provides calibrated SVI (Stochastic Volatility Inspired) parameters for BTC and ETH options traded on Deribit, with 5-minute granularity. Offering a timely calibration view of the volatility surface. Download the SVI White Paper here: https://go.amberdata.io/hubfs/SVITrueLineWhitepaper.pdf operationId: derivatives-svi-minutely parameters: - name: currency in: query description: > **[Required]** The underlying currency for which there are listed option instruments. **[Examples]** ` BTC | ETH ` required: true schema: type: string default: BTC - name: signature in: query description: >- **[Optional]** This parameter allows for users to get a verifiable signature using the ECDSA format. schema: type: string - name: timeFormat in: query description: > **[Optional]** Time format of the timestamps in the return payload. **[Defaults]** `milliseconds | ms* | iso | iso8601 | hr | human_readable` schema: type: string default: hr - name: sviFormat in: query description: >- **[Optional]** This parameter can be either blank (default) or "TAU" which returns the SVI parameters and days to expiration as a decimal to years. schema: type: string - name: startDate in: query description: > **[Optional]** Payload only includes data after this date (inclusive). **[Formats]** `seconds | milliseconds | iso8601` **[Examples]** `1578531600 | 1578531600000 | 2020-09-01T01:00:00` schema: type: string - name: endDate in: query description: > **[Optional]** Payload only includes data before this date (exclusive). **[Formats]** `seconds | milliseconds | iso8601` **[Examples]** `1578531600 | 1578531600000 | 2020-09-01T01:00:00` schema: type: string responses: '200': description: '200' content: application/json: examples: Result: value: status: 200 title: OK description: Successful request payload: data: - currency: BTC expirationTimestamp: '2024-11-24' forwardDifference: 65.421875 indexPrice: 98756.9609375 sviA: -5.639107704162598 sviB: 39.75821304321289 sviM: -0.20742395520210266 sviRho: -0.6995736956596375 sviSigma: 0.20480555295944214 timestamp: 1732316400000 - currency: BTC expirationTimestamp: '2024-11-25' forwardDifference: 109.2265625 indexPrice: 98756.9609375 sviA: -0.4821126163005829 sviB: 7.483584880828857 sviM: -0.062279004603624344 sviRho: -0.4358375370502472 sviSigma: 0.10142073780298233 timestamp: 1732316400000 - currency: BTC expirationTimestamp: '2024-11-29' forwardDifference: 316.265625 indexPrice: 98756.9609375 sviA: -1.972853422164917 sviB: 6.577316761016846 sviM: -0.05279833450913429 sviRho: -0.13853329420089722 sviSigma: 0.3499053418636322 timestamp: 1732316400000 - currency: BTC expirationTimestamp: '2024-12-06' forwardDifference: 587.265625 indexPrice: 98756.9609375 sviA: -0.7132072448730469 sviB: 3.2979183197021484 sviM: -0.14550690352916718 sviRho: -0.33262351155281067 sviSigma: 0.334104061126709 timestamp: 1732316400000 - currency: BTC expirationTimestamp: '2024-12-13' forwardDifference: 849.109375 indexPrice: 98756.9609375 sviA: -0.1729683130979538 sviB: 1.868891954421997 sviM: -0.12346512824296951 sviRho: -0.2985169291496277 sviSigma: 0.2825409173965454 timestamp: 1732316400000 - currency: BTC expirationTimestamp: '2024-12-27' forwardDifference: 1407.21875 indexPrice: 98756.9609375 sviA: -0.30817434191703796 sviB: 1.7326325178146362 sviM: -0.16202467679977417 sviRho: -0.30857881903648376 sviSigma: 0.38235053420066833 timestamp: 1732316400000 - currency: BTC expirationTimestamp: '2025-01-31' forwardDifference: 2644.7265625 indexPrice: 98756.9609375 sviA: -0.23033219575881958 sviB: 1.160969614982605 sviM: -0.31949517130851746 sviRho: -0.41125980019569397 sviSigma: 0.5577496886253357 timestamp: 1732316400000 - currency: BTC expirationTimestamp: '2025-03-28' forwardDifference: 4616.6015625 indexPrice: 98756.9609375 sviA: -0.1914905309677124 sviB: 0.7794833779335022 sviM: -0.32258641719818115 sviRho: -0.2921357750892639 sviSigma: 0.739845871925354 timestamp: 1732316400000 - currency: BTC expirationTimestamp: '2025-06-27' forwardDifference: 7726.859375 indexPrice: 98756.9609375 sviA: -0.14289656281471252 sviB: 0.5620532631874084 sviM: -0.4507488012313843 sviRho: -0.3076874911785126 sviSigma: 0.9575263261795044 timestamp: 1732316400000 - currency: BTC expirationTimestamp: '2025-09-26' forwardDifference: 10416.2421875 indexPrice: 98756.9609375 sviA: 0.09907551109790802 sviB: 0.35495826601982117 sviM: -0.4934375286102295 sviRho: -0.33383607864379883 sviSigma: 0.7994546294212341 timestamp: 1732316400000 metadata: api-version: '2023-09-30' schema: type: object properties: status: type: integer example: 200 default: 0 title: type: string example: OK description: type: string example: Successful request payload: type: object properties: data: type: array items: type: object properties: currency: type: string example: BTC expirationTimestamp: type: string example: '2024-11-24' forwardDifference: type: number example: 65.421875 default: 0 indexPrice: type: number example: 98756.9609375 default: 0 sviA: type: number example: -5.639107704162598 default: 0 sviB: type: number example: 39.75821304321289 default: 0 sviM: type: number example: -0.20742395520210266 default: 0 sviRho: type: number example: -0.6995736956596375 default: 0 sviSigma: type: number example: 0.20480555295944214 default: 0 timestamp: type: integer example: 1732316400000 default: 0 metadata: type: object properties: api-version: type: string example: '2023-09-30' '400': description: '400' content: application/json: examples: Result: value: {} schema: type: object properties: {} deprecated: false security: - ApiKeyAuth: [] components: securitySchemes: ApiKeyAuth: type: apiKey in: header name: x-api-key ````