# Using Envelope for Request/Response

## Seed Request/Response

request(CID) [
    body: «getSeed» [
        ❰seedDigest❱: SeedDigest
    ]
    note: String?
]

response(CID) [
    result: Seed
]

## Key Request/Response

request(CID) [
    body: «getKey» [
        ❰derivationPath❱: DerivationPath
        ❰isPrivate❱: Bool? = true
        ❰useInfo❱: UseInfo? = (.btc, .mainnet)
        ❰isDerivable❱: Bool? = true
    ]
    note: String?
]

response(CID) [
    result: HDKey
]

## PSBT Signing Request/Response

request(CID) [
    body: «signPSBT» [
        ❰psbt❱: PSBT
    ]
    note: String?
]

response(CID) [
    result: PSBT
]

## Output Descriptor Request/Response

request(CID) [
    body: «getOutputDescriptor» [
        ❰name❱: String?
        ❰useInfo❱: UseInfo? = (.btc, .mainnet)
        ❰challenge❱: bytes
    ]
]

response(CID) [
    result: [OutputDescriptor, bytes] # challenge signature
]