> ## Documentation Index
> Fetch the complete documentation index at: https://kamino.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Get KLend reserve borrow APY and median staking APY history

> Get historical borrow interest APY and median staking APY data for reserves that contain LST tokens with staking yield. Uses median staking APY values for more stable calculations.



## OpenAPI

````yaml /kamino-api.json get /kamino-market/{marketPubkey}/reserves/{reservePubkey}/borrow-and-staking-apys/history/median
openapi: 3.1.0
info:
  version: 1.0.0
  title: Kamino Public API
  description: >
    The Kamino API provides a comprehensive way to interact with Kamino without
    reading directly from the blockchain.


    The API also provides the ability to fetch data that might not be available
    from just reading the chain.


    The API is rate-limited for unauthenticated users. If you feel you need to
    make more requests or run into rate-limit issues, please reach out.
servers:
  - url: https://api.kamino.finance
security: []
paths:
  /kamino-market/{marketPubkey}/reserves/{reservePubkey}/borrow-and-staking-apys/history/median:
    get:
      tags:
        - Kamino Lend Yield
      summary: Get KLend reserve borrow APY and median staking APY history
      description: >-
        Get historical borrow interest APY and median staking APY data for
        reserves that contain LST tokens with staking yield. Uses median staking
        APY values for more stable calculations.
      parameters:
        - schema:
            allOf:
              - $ref: '#/components/schemas/AddressBase58'
              - description: Kamino Lend market public key
                example: 7u3HeHxYDLhnCoErrtycNokbQYbWGzLs6JSDqGAv5PfF
          required: true
          description: Kamino Lend market public key
          name: marketPubkey
          in: path
        - schema:
            allOf:
              - $ref: '#/components/schemas/AddressBase58'
              - description: Kamino Lend reserve public key
                example: FBSyPnxtHKLBZ4UeeUyAnbtFuAmTHLtso9YtsqRDRWpM
          required: true
          description: Kamino Lend reserve public key
          name: reservePubkey
          in: path
        - schema:
            type: string
            enum:
              - mainnet-beta
              - devnet
              - localnet
            default: mainnet-beta
            description: Solana cluster environment
            example: mainnet-beta
          required: false
          description: Solana cluster environment
          name: env
          in: query
        - schema:
            anyOf:
              - type: string
              - type: number
            default: '1970-01-01T00:00:00.000Z'
            description: Date input (ISO 8601 string or epoch in ms)
            examples:
              - '2024-01-01T00:00:00.000Z'
              - 1704067200000
            example: 2020-01-01T00:00Z
          required: false
          description: Date input (ISO 8601 string or epoch in ms)
          name: start
          in: query
        - schema:
            anyOf:
              - type: string
              - type: number
            description: Date input (ISO 8601 string or epoch in ms)
            examples:
              - '2024-01-01T00:00:00.000Z'
              - 1704067200000
            example: 2020-02-01T00:00Z
          required: false
          description: Date input (ISO 8601 string or epoch in ms)
          name: end
          in: query
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/BorrowAndStakingApyResponse'
        '404':
          description: Not Found
          content:
            application/json:
              schema:
                type: object
                properties:
                  metadata:
                    type: string
                    description: Error message describing why it was not found
                    example: Account could not be found
                required:
                  - metadata
        '500':
          description: Internal Server Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
components:
  schemas:
    AddressBase58:
      type: string
      description: Valid base58-encoded address
      example: VEG1EMtttdHunMbSza8uoms1R18VXmYSph2bBpHcSJd
    BorrowAndStakingApyResponse:
      type: object
      properties:
        createdOn:
          allOf:
            - $ref: '#/components/schemas/SnapshotDateTime'
            - description: Timestamp of the snapshot
              example: '2023-10-17T15:00:06.009Z'
        borrowInterestApy:
          $ref: '#/components/schemas/Apy'
        stakingApy:
          allOf:
            - $ref: '#/components/schemas/Apy'
            - description: Staking APY
              example: '0.066527842899023711405366628964490454572'
      required:
        - createdOn
        - borrowInterestApy
        - stakingApy
    Error:
      type: object
      properties:
        error:
          type: string
          description: Error message for internal server failure
          example: An internal error occurred
      required:
        - error
      description: Internal server error response (500)
      example:
        error: An internal error occurred
    SnapshotDateTime:
      type: string
      format: date-time
      description: Timestamp of the metrics snapshot
      example: '2023-06-29T15:15:26.464Z'
    Apy:
      type: string
      description: Borrow interest APY
      example: '0.027610992938039702'
      examples:
        - '0.123'
        - '0'
        - '1'
        - '1.23'
        - '-0.5'
        - '999999.999999'

````