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POST
Sign Authorization (EIP-7702)

Authorizations

X-API-Key
string
header
default:sk_your_secret_key_here
required

Your partner secret key (server-side only)

Headers

X-Request-Id
string<uuid>

UUID for request tracing. Para returns one if omitted.

Idempotency-Key
string

Unique key for safe retries on POST endpoints. If a request with the same key is received within 24 hours, the original response is returned without re-executing. Recommended format: UUID v4. Max length 256 characters. Returns 422 if the same key is reused with a different request body. Returns 409 if a request with the same key is still being processed.

Maximum string length: 256

Path Parameters

walletId
string
required

Wallet ID

Example:

"0a1b2c3d-4e5f-6789-abcd-ef0123456789"

Body

application/json
authorization
object
required

Response

Signed authorization

address
string
required

Contract address the authorization delegates to.

Example:

"0x1234567890abcdef1234567890abcdef12345678"

chainId
integer
required

Chain ID from the authorization.

Example:

1

nonce
integer
required

Nonce from the authorization.

Example:

0

r
string
required

ECDSA signature r component (hex with 0x prefix).

Example:

"0xa1b2c3..."

s
string
required

ECDSA signature s component (hex with 0x prefix).

Example:

"0xd4e5f6..."

yParity
enum<integer>
required

EIP-7702 parity bit (0 or 1). Unlike other signing endpoints that return v (27/28), this uses yParity per the EIP-7702 spec.

Available options:
0,
1
Example:

0

signature
string
required

Raw hex-encoded 65-byte signature without 0x prefix (r + s + v).

Example:

"a1b2c3d4e5f6..."