curl --request POST \
  --url https://api.despezzas.com/v1/categorization-rules \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "category_id": "b1a2c3d4-e5f6-4a7b-8c9d-0e1f2a3b4c5d",
  "match_fields": [
    "merchant_name"
  ],
  "source_transaction_id": "8f1c2a34-5b6d-4e7f-8a9b-0c1d2e3f4a5b"
}
'

const options = {
  method: 'POST',
  headers: {Authorization: 'Basic <encoded-value>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    category_id: 'b1a2c3d4-e5f6-4a7b-8c9d-0e1f2a3b4c5d',
    match_fields: ['merchant_name'],
    source_transaction_id: '8f1c2a34-5b6d-4e7f-8a9b-0c1d2e3f4a5b'
  })
};

fetch('https://api.despezzas.com/v1/categorization-rules', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.despezzas.com/v1/categorization-rules"

payload = {
    "category_id": "b1a2c3d4-e5f6-4a7b-8c9d-0e1f2a3b4c5d",
    "match_fields": ["merchant_name"],
    "source_transaction_id": "8f1c2a34-5b6d-4e7f-8a9b-0c1d2e3f4a5b"
}
headers = {
    "Authorization": "Basic <encoded-value>",
    "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://api.despezzas.com/v1/categorization-rules"

	payload := strings.NewReader("{\n  \"category_id\": \"b1a2c3d4-e5f6-4a7b-8c9d-0e1f2a3b4c5d\",\n  \"match_fields\": [\n    \"merchant_name\"\n  ],\n  \"source_transaction_id\": \"8f1c2a34-5b6d-4e7f-8a9b-0c1d2e3f4a5b\"\n}")

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

	req.Header.Add("Authorization", "Basic <encoded-value>")
	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))

}

{
  "rule": {
    "category_id": "b1a2c3d4-e5f6-4a7b-8c9d-0e1f2a3b4c5d",
    "enabled": true,
    "id": "d4e5f6a7-b8c9-4d0e-8f1a-2b3c4d5e6f7a",
    "is_expense": true,
    "match_fields": [
      "merchant_name"
    ],
    "source_id": "3a9e7d21-4b5c-4d6e-8f70-1a2b3c4d5e6f",
    "source_kind": "ACCOUNT",
    "source_transaction_id": "8f1c2a34-5b6d-4e7f-8a9b-0c1d2e3f4a5b",
    "available_criteria": [
      {
        "field": "merchant_name",
        "normalized": "pao de acucar",
        "value": "Pão de Açúcar"
      }
    ],
    "createdAt": "2026-09-01T09:00:00.000Z",
    "fingerprint": "sha256:4f2a…",
    "profile_id": null,
    "subcategory_id": "d7e8f9a0-b1c2-4d3e-8f4a-5b6c7d8e9f0a",
    "updatedAt": "2026-09-15T14:32:10.000Z",
    "user_id": "0d6b923c-3392-424e-a152-2ee32474e8d5"
  },
  "source_transaction_updated": true,
  "updated_existing_count": 14
}

{
  "message": "Credenciais de API inválidas",
  "statusCode": 401,
  "error": "Unauthorized"
}

{
  "message": "Credenciais de API inválidas",
  "statusCode": 401,
  "error": "Unauthorized"
}

{
  "message": "Credenciais de API inválidas",
  "statusCode": 401,
  "error": "Unauthorized"
}

{
  "message": "Credenciais de API inválidas",
  "statusCode": 401,
  "error": "Unauthorized"
}

{
  "message": "Credenciais de API inválidas",
  "statusCode": 401,
  "error": "Unauthorized"
}