Execute Off-Ramp

Execute an off-ramp transaction

curl --request POST \
  --url https://staging-api.capa.fi/api/partner/v2/off-ramp/execute \
  --header 'Content-Type: application/json' \
  --header 'partner-api-key: <api-key>' \
  --data '
{
  "transactionId": "8374f327-38bd-4b0b-b8a7-2524599eb903",
  "transactionHash": "0x48c78b33abc0256b217bebbb3f0a30642c17c5527761f09d35c24aa85361b7f0"
}
'

import requests

url = "https://staging-api.capa.fi/api/partner/v2/off-ramp/execute"

payload = {
    "transactionId": "8374f327-38bd-4b0b-b8a7-2524599eb903",
    "transactionHash": "0x48c78b33abc0256b217bebbb3f0a30642c17c5527761f09d35c24aa85361b7f0"
}
headers = {
    "partner-api-key": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'partner-api-key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    transactionId: '8374f327-38bd-4b0b-b8a7-2524599eb903',
    transactionHash: '0x48c78b33abc0256b217bebbb3f0a30642c17c5527761f09d35c24aa85361b7f0'
  })
};

fetch('https://staging-api.capa.fi/api/partner/v2/off-ramp/execute', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://staging-api.capa.fi/api/partner/v2/off-ramp/execute",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'transactionId' => '8374f327-38bd-4b0b-b8a7-2524599eb903',
    'transactionHash' => '0x48c78b33abc0256b217bebbb3f0a30642c17c5527761f09d35c24aa85361b7f0'
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "partner-api-key: <api-key>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

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

func main() {

	url := "https://staging-api.capa.fi/api/partner/v2/off-ramp/execute"

	payload := strings.NewReader("{\n  \"transactionId\": \"8374f327-38bd-4b0b-b8a7-2524599eb903\",\n  \"transactionHash\": \"0x48c78b33abc0256b217bebbb3f0a30642c17c5527761f09d35c24aa85361b7f0\"\n}")

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

	req.Header.Add("partner-api-key", "<api-key>")
	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))

}

HttpResponse<String> response = Unirest.post("https://staging-api.capa.fi/api/partner/v2/off-ramp/execute")
  .header("partner-api-key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"transactionId\": \"8374f327-38bd-4b0b-b8a7-2524599eb903\",\n  \"transactionHash\": \"0x48c78b33abc0256b217bebbb3f0a30642c17c5527761f09d35c24aa85361b7f0\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://staging-api.capa.fi/api/partner/v2/off-ramp/execute")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["partner-api-key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"transactionId\": \"8374f327-38bd-4b0b-b8a7-2524599eb903\",\n  \"transactionHash\": \"0x48c78b33abc0256b217bebbb3f0a30642c17c5527761f09d35c24aa85361b7f0\"\n}"

response = http.request(request)
puts response.read_body

{
  "success": true,
  "data": {
    "id": "8374f327-38bd-4b0b-b8a7-2524599eb903",
    "status": "PENDING"
  }
}

POST

api

partner

off-ramp

execute

Execute an off-ramp transaction

curl --request POST \
  --url https://staging-api.capa.fi/api/partner/v2/off-ramp/execute \
  --header 'Content-Type: application/json' \
  --header 'partner-api-key: <api-key>' \
  --data '
{
  "transactionId": "8374f327-38bd-4b0b-b8a7-2524599eb903",
  "transactionHash": "0x48c78b33abc0256b217bebbb3f0a30642c17c5527761f09d35c24aa85361b7f0"
}
'

import requests

url = "https://staging-api.capa.fi/api/partner/v2/off-ramp/execute"

payload = {
    "transactionId": "8374f327-38bd-4b0b-b8a7-2524599eb903",
    "transactionHash": "0x48c78b33abc0256b217bebbb3f0a30642c17c5527761f09d35c24aa85361b7f0"
}
headers = {
    "partner-api-key": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'partner-api-key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    transactionId: '8374f327-38bd-4b0b-b8a7-2524599eb903',
    transactionHash: '0x48c78b33abc0256b217bebbb3f0a30642c17c5527761f09d35c24aa85361b7f0'
  })
};

fetch('https://staging-api.capa.fi/api/partner/v2/off-ramp/execute', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://staging-api.capa.fi/api/partner/v2/off-ramp/execute",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'transactionId' => '8374f327-38bd-4b0b-b8a7-2524599eb903',
    'transactionHash' => '0x48c78b33abc0256b217bebbb3f0a30642c17c5527761f09d35c24aa85361b7f0'
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "partner-api-key: <api-key>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

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

func main() {

	url := "https://staging-api.capa.fi/api/partner/v2/off-ramp/execute"

	payload := strings.NewReader("{\n  \"transactionId\": \"8374f327-38bd-4b0b-b8a7-2524599eb903\",\n  \"transactionHash\": \"0x48c78b33abc0256b217bebbb3f0a30642c17c5527761f09d35c24aa85361b7f0\"\n}")

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

	req.Header.Add("partner-api-key", "<api-key>")
	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))

}

HttpResponse<String> response = Unirest.post("https://staging-api.capa.fi/api/partner/v2/off-ramp/execute")
  .header("partner-api-key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"transactionId\": \"8374f327-38bd-4b0b-b8a7-2524599eb903\",\n  \"transactionHash\": \"0x48c78b33abc0256b217bebbb3f0a30642c17c5527761f09d35c24aa85361b7f0\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://staging-api.capa.fi/api/partner/v2/off-ramp/execute")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["partner-api-key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"transactionId\": \"8374f327-38bd-4b0b-b8a7-2524599eb903\",\n  \"transactionHash\": \"0x48c78b33abc0256b217bebbb3f0a30642c17c5527761f09d35c24aa85361b7f0\"\n}"

response = http.request(request)
puts response.read_body

{
  "success": true,
  "data": {
    "id": "8374f327-38bd-4b0b-b8a7-2524599eb903",
    "status": "PENDING"
  }
}

Executes a previously created off-ramp transaction, triggering the fiat payout to the user’s bank account. Call this after the user has sent crypto to the destinationWalletAddress returned by the Create Off-Ramp endpoint.

Transaction Status Values

Status	Description
`PENDING`	Transaction is pending processing.
`IN_PROGRESS`	Transaction is being processed.
`COMPLETED`	Transaction has completed successfully.
`FAILED`	Transaction has failed.
`CANCELLED`	Transaction was cancelled.
`CRYPTO_RECEIVED`	Crypto payment has been received.
`CRYPTO_NOT_RECEIVED`	Crypto payment was not received.
`COMPLETED_CRYPTO_RECEIVAL`	Crypto receival process has completed.
`BANK_TRANSFER_PENDING`	Bank transfer is pending.
`READY_BANK_TRANSFER`	Ready to initiate bank transfer.

Important Notes

The transactionId must reference a valid off-ramp transaction created via Create Off-Ramp.
The transaction must belong to the partner associated with the API key.
Optionally include transactionHash, the blockchain hash of the user’s crypto transfer, to help Capa locate and confirm the incoming funds. It must be a valid blockchain hash.

Use Cases

Manual Execution: Trigger execution after verifying crypto receipt.
Workflow Integration: Separate transaction creation from execution in automated workflows.

Error Codes

Common Errors

HTTP Status	Code	Message
401	`UNAUTHORIZED`	”API Key is missing”
401	`UNAUTHORIZED`	”Invalid API Key format”
401	`UNAUTHORIZED`	”Invalid API Key”

Endpoint-Specific Errors

HTTP Status	Code	Message
400	`INVALID_USER_INPUT_ERROR`	”Invalid User Input”
404	`TRANSACTION_NOT_FOUND`	”Transaction not found”
403	`TRANSACTION_ACCESS_DENIED`	”Transaction does not belong to this partner”

Authorizations

partner-api-key

string

header

required

API key for the affiliated partner performing the request.

Body

application/json

transactionId

string<uuid>

required

Identifier for the off-ramp transaction to execute

Example:

"8374f327-38bd-4b0b-b8a7-2524599eb903"

transactionHash

string

The blockchain transaction hash of the user's crypto transfer

Example:

"0x48c78b33abc0256b217bebbb3f0a30642c17c5527761f09d35c24aa85361b7f0"

Response

Transaction execution initiated successfully

success

boolean

Example:

true

data

object

Show child attributes

Create Off-Ramp Create Cross-Ramp

⌘I

​Transaction Status Values

​Important Notes

​Use Cases

​Error Codes

​Common Errors

​Endpoint-Specific Errors

Authorizations

Body

Response

Transaction Status Values

Important Notes

Use Cases

Error Codes

Common Errors

Endpoint-Specific Errors