# Get KLend reward history

Fetches historical KLend reward metrics for a specific deposit and borrow reserve pair

Endpoint: GET /klend/{depositReservePubkey}/{borrowReservePubkey}/rewards/history
Version: 1.0.0

## Path parameters:

  - `depositReservePubkey` (string, required)
    Deposit reserve public key
    Example: "VEG1EMtttdHunMbSza8uoms1R18VXmYSph2bBpHcSJd"

  - `borrowReservePubkey` (string, required)
    Borrow reserve public key
    Example: "VEG1EMtttdHunMbSza8uoms1R18VXmYSph2bBpHcSJd"

## Query parameters:

  - `start` (any)
    Date input (ISO 8601 string or epoch in ms)

  - `end` (any)
    Date input (ISO 8601 string or epoch in ms)

  - `frequency` (string)
    Frequency of historical data aggregation
    Enum: "hour", "day"

## Response 200 fields (application/json):

  - `timestamp` (string, required)
    Timestamp of the data point

  - `depositReserve` (string,null, required)
    Market public key
    Example: "VEG1EMtttdHunMbSza8uoms1R18VXmYSph2bBpHcSJd"

  - `borrowReserve` (string,null, required)
    Market public key
    Example: "VEG1EMtttdHunMbSza8uoms1R18VXmYSph2bBpHcSJd"

  - `rewardToken` (string, required)
    Market public key
    Example: "VEG1EMtttdHunMbSza8uoms1R18VXmYSph2bBpHcSJd"

  - `rewardApy` (string, required)
    Borrow interest APY
    Example: "0.2"

## Response 400 fields (application/json):

  - `error` (string, required)
    High-level error message describing the failure
    Example: "Invalid query request"

  - `details` (array)
    Detailed validation issues (present only for validation errors)
    Example: [{"code":"invalid_union","errors":[[{"code":"custom","path":[],"message":"Invalid date string"}],[{"expected":"number","code":"invalid_type","path":[],"message":"Invalid input: expected number, received string"}]],"path":["start"],"message":"Invalid input"}]

## Response 500 fields (application/json):

  - `error` (string, required)
    Error message for internal server failure
    Example: "An internal error occurred"