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POST
See authentication, signing, data conventions, and errors. Regenerate the timestamp, nonce, and signature on every retry. POST /quote A single-use credential locking a rate and fee until expires_at.

Request headers

string
required
Bearer API Key.
string
required
Unix seconds, within five minutes of server time.
string
required
Unique per request, 16–64 characters.
string
required
Lowercase hexadecimal HMAC-SHA256 signature for the exact request body.
string
Idempotency key

Request parameters

string
10 digits
string
required
on_ramp, off_ramp, swap
string
required
Sell currency
string
required
Buy currency
integer
required
Sell amount, smallest unit
object
Custom metadata

Response

string
required
Quote ID, 10 digits
string
required
on_ramp, off_ramp, swap
string
required
Sell currency
string
required
Buy currency
integer
required
Sell amount, smallest unit
integer
required
Buy amount
string
required
Locked rate, decimal string
integer
required
Fee in source currency
string
required
Fee currency
integer
required
Expiry time
string
required
open, used, expired
object
Custom metadata
integer
required
Creation time

Status and errors

400 invalid parameters or unsupported pair.
Last modified on October 29, 2026