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POST
Start a developer-key login and receive the payload to sign

Authorizations

Authorization
string
header
required

Bearer authentication header of the form Bearer <token>, where <token> is your auth token.

Body

application/json
email
string<email>
required

Email address of the account that owns the registered developer key.

publicKey
string
required

Base64 DER SubjectPublicKeyInfo for the registered P-256 developer key.

nonce
integer
required

Caller-generated single-use number included in the signed authentication proof.

requestExpiry
integer
required

Unix time in milliseconds after which the signed request is refused.

signature
string
required

Base64 DER ECDSA P-256/SHA-256 signature over the login proof message.

Response

Successful Response

challengeId
string<uuid>
required

Single-use authentication challenge identifier.

payload
string
required

Base64-encoded canonical authorization payload the developer key must sign.

expiresAt
string<date-time>
required

UTC timestamp after which the challenge is refused.