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Version: v1.7.0

Haskell SDK

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Getting Started

  1. Add maestro-sdk to the build-depends of your project.

  2. Create a Maestro API key.

  3. Code below explains sample usage.

    module Main (main) where

    import Control.Exception (try)
    import Maestro.Client.V1 -- @Maestro.Client.V1@ defines all the client utilities to query Maestro API endpoints.
    import Maestro.Types.V1 -- @Maestro.Types.V1@ defines all the types used.

    main :: IO ()
    main = do
    env <- mkMaestroEnv @'V1 "<Your-API-Key>" Preprod defaultBackoff -- This is how we create an environment against which we'll query endpoints.
    chainTip :: ChainTip <- getTimestampedData <$> getChainTip env -- Maestro endpoint to get for chain-tip has data & timestamp against which data was calculated. All endpoints which are timestamped, has functions `getTimestampedData` to get for underlying data & `getTimestamp` to get the timestamp.
    addressesUTxOs :: Either MaestroError [UtxoWithSlot] <-
    try -- To catch for any errors, given in type `MaestroError`.
    $ allPages -- Since this endpoint is paged, we have a helper utility `allPages` to accumulate data from all the pages.
    $ flip
    (
    utxosAtMultiAddresses env
    (Just True) -- We would like to have datums resolved. This is for @resolve_datums@ query parameter.
    (Just False) -- We would not like to include CBOR encodings of the transaction outputs in the response.
    ) ["addr_test1...", "addr_test1...", "addr_test1..."] -- Mention your list of addresses to query for.
    print addressesUTxOs

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