Create Swap - Keette Developers

Create Swap

curl --request POST \
  --url https://20b9-41-90-209-232.ngrok-free.app/v1/swaps \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'Idempotency-Key: <idempotency-key>' \
  --data '
{
  "quote_id": "e6bd10ee-6e53-4aaa-9cd0-a2bb980cf73e"
}
'

const url = 'https://20b9-41-90-209-232.ngrok-free.app/v1/swaps';
const options = {
  method: 'POST',
  headers: {
    'Idempotency-Key': '<idempotency-key>',
    Authorization: 'Bearer <token>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({quote_id: 'e6bd10ee-6e53-4aaa-9cd0-a2bb980cf73e'})
};

fetch(url, options)
  .then(res => res.json())
  .then(json => console.log(json))
  .catch(err => console.error(err));

import requests

url = "https://20b9-41-90-209-232.ngrok-free.app/v1/swaps"

payload = { "quote_id": "e6bd10ee-6e53-4aaa-9cd0-a2bb980cf73e" }
headers = {
    "Idempotency-Key": "<idempotency-key>",
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://20b9-41-90-209-232.ngrok-free.app/v1/swaps"

	payload := strings.NewReader("{\n  \"quote_id\": \"e6bd10ee-6e53-4aaa-9cd0-a2bb980cf73e\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Idempotency-Key", "<idempotency-key>")
	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

{
  "object": "swap",
  "id": "14d2759d-c6b1-5e5f-85b2-af84bc650f57",
  "status": "processing",
  "origin": "keette",
  "from": "USD",
  "to": "NGN",
  "amount_from": 10000,
  "amount_to": 1550000,
  "scale_from": 2,
  "scale_to": 2,
  "fx_rate": "155.00",
  "quote_id": "e6bd10ee-6e53-4aaa-9cd0-a2bb980cf73e",
  "stan": "SWP-2610-ABCDEF12",
  "created_at": "2026-10-27T13:00:00Z",
  "updated_at": "2026-10-27T13:00:01Z"
}

{
  "error": {
    "type": "authentication_error",
    "code": "invalid_api_key",
    "message": "Invalid API key provided."
  }
}

POST

/

swaps

Create Swap

curl --request POST \
  --url https://20b9-41-90-209-232.ngrok-free.app/v1/swaps \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'Idempotency-Key: <idempotency-key>' \
  --data '
{
  "quote_id": "e6bd10ee-6e53-4aaa-9cd0-a2bb980cf73e"
}
'

const url = 'https://20b9-41-90-209-232.ngrok-free.app/v1/swaps';
const options = {
  method: 'POST',
  headers: {
    'Idempotency-Key': '<idempotency-key>',
    Authorization: 'Bearer <token>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({quote_id: 'e6bd10ee-6e53-4aaa-9cd0-a2bb980cf73e'})
};

fetch(url, options)
  .then(res => res.json())
  .then(json => console.log(json))
  .catch(err => console.error(err));

import requests

url = "https://20b9-41-90-209-232.ngrok-free.app/v1/swaps"

payload = { "quote_id": "e6bd10ee-6e53-4aaa-9cd0-a2bb980cf73e" }
headers = {
    "Idempotency-Key": "<idempotency-key>",
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://20b9-41-90-209-232.ngrok-free.app/v1/swaps"

	payload := strings.NewReader("{\n  \"quote_id\": \"e6bd10ee-6e53-4aaa-9cd0-a2bb980cf73e\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Idempotency-Key", "<idempotency-key>")
	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

{
  "object": "swap",
  "id": "14d2759d-c6b1-5e5f-85b2-af84bc650f57",
  "status": "processing",
  "origin": "keette",
  "from": "USD",
  "to": "NGN",
  "amount_from": 10000,
  "amount_to": 1550000,
  "scale_from": 2,
  "scale_to": 2,
  "fx_rate": "155.00",
  "quote_id": "e6bd10ee-6e53-4aaa-9cd0-a2bb980cf73e",
  "stan": "SWP-2610-ABCDEF12",
  "created_at": "2026-10-27T13:00:00Z",
  "updated_at": "2026-10-27T13:00:01Z"
}

{
  "error": {
    "type": "authentication_error",
    "code": "invalid_api_key",
    "message": "Invalid API key provided."
  }
}

Authorizations

Authorization

string

header

required

Secret API key from Settings → Developers → API keys. Example: Authorization: Bearer sk_test_…

Headers

Idempotency-Key

string

required

Client-generated key so retries do not create duplicate swaps.

Required string length: 1 - 128

Body

application/json

quote_id

string<uuid>

required

Id from POST /fx/quotes with purpose: swap. Must still be unexpired and unused.

Example:

"e6bd10ee-6e53-4aaa-9cd0-a2bb980cf73e"

Response

Swap (processing, completed, or failed)

object

enum<string>

required

Object type discriminator.

Available options:

swap

id

string<uuid>

required

Swap id.

status

enum<string>

required

Lifecycle status of the book-to-book transfer.

Available options:

processing,

completed,

failed,

reversed

from

string

required

Debited book currency.

to

string

required

Credited book currency.

amount_from

integer

required

Debit amount in Ledger minor units.

amount_to

integer

required

Credit amount in Ledger minor units.

stan

string

required

System trace / reference shown in statements.

origin

string

How the swap was initiated (keette for API/dashboard).

scale_from

integer

Decimal places for from.

scale_to

integer

Decimal places for to.

fx_rate

string

Applied rate as a decimal string.

quote_id

string<uuid>

Firm quote that locked the rate.

reason

string

Failure or reversal reason when applicable.

created_at

string<date-time>

Creation time (UTC).

updated_at

string<date-time>

Last status change (UTC).

completed_at

string<date-time>

When the swap finished successfully, if completed.