Sign the carta manifiesto

Sign the carta manifiesto with the FIEL (e.firma) to AUTHORIZE CFDI stamping for this RFC. A fiscal profile is created on hold (status “requires_action”) and cannot stamp invoices until this is signed — do it once per profile. Uses the FIEL stored on the profile, or upload one raw via multipart — curl -F cer=@fiel.cer -F key=@fiel.key -F password=.... (The same FIEL is reused for descarga masiva.)

POST /v1/fiscal_profiles/{id}/manifest

Sign the carta manifiesto

cURL

curl --request POST \
  --url https://api.newinvoice.dev/v1/fiscal_profiles/{id}/manifest \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: multipart/form-data' \
  --form cer='@example-file' \
  --form key='@example-file'

import requests

url = "https://api.newinvoice.dev/v1/fiscal_profiles/{id}/manifest"

files = {
    "cer": ("example-file", open("example-file", "rb")),
    "key": ("example-file", open("example-file", "rb"))
}
headers = {"Authorization": "Bearer <token>"}

response = requests.post(url, files=files, headers=headers)

print(response.text)

const form = new FormData();
form.append('cer', '{
  "fileName": "example-file"
}');
form.append('key', '{
  "fileName": "example-file"
}');

const options = {method: 'POST', headers: {Authorization: 'Bearer <token>'}};

options.body = form;

fetch('https://api.newinvoice.dev/v1/fiscal_profiles/{id}/manifest', 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://api.newinvoice.dev/v1/fiscal_profiles/{id}/manifest",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"cer\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n{\r\n  \"fileName\": \"example-file\"\r\n}\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"key\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n{\r\n  \"fileName\": \"example-file\"\r\n}\r\n-----011000010111000001101001--",
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: multipart/form-data"
  ],
]);

$response = curl_exec($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://api.newinvoice.dev/v1/fiscal_profiles/{id}/manifest"

	payload := strings.NewReader("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"cer\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n{\r\n  \"fileName\": \"example-file\"\r\n}\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"key\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n{\r\n  \"fileName\": \"example-file\"\r\n}\r\n-----011000010111000001101001--")

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

	req.Header.Add("Authorization", "Bearer <token>")

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.newinvoice.dev/v1/fiscal_profiles/{id}/manifest")
  .header("Authorization", "Bearer <token>")
  .body("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"cer\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n{\r\n  \"fileName\": \"example-file\"\r\n}\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"key\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n{\r\n  \"fileName\": \"example-file\"\r\n}\r\n-----011000010111000001101001--")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.newinvoice.dev/v1/fiscal_profiles/{id}/manifest")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request.body = "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"cer\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n{\r\n  \"fileName\": \"example-file\"\r\n}\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"key\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n{\r\n  \"fileName\": \"example-file\"\r\n}\r\n-----011000010111000001101001--"

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

200

{
  "object": "manifest",
  "fiscal_profile_id": "fp_2P9K3sample",
  "status": "pending_signature",
  "signed_at": "2026-07-10T18:25:43Z",
  "already_signed": true,
  "codigo": "string",
  "mensaje": "string",
  "xml_base64": "string",
  "pdf_base64": "string"
}

{
  "type": "https://errors.invoiceapi.mx/auth_unauthorized",
  "title": "Authentication required",
  "status": 401,
  "code": "auth.unauthorized",
  "detail": "Missing or invalid API key.",
  "remediation": "Send `Authorization: Bearer sk_test_...` (or sk_live_...) with a valid API key.",
  "doc_url": "/docs/errors#auth-unauthorized",
  "request_id": "req_2P9K3sample"
}

{
  "type": "https://errors.invoiceapi.mx/resource_not_found",
  "title": "Resource not found",
  "status": 404,
  "code": "resource.not_found",
  "detail": "No such id in this org + mode.",
  "remediation": "Verify the id and that the key mode (test/live) matches the id.",
  "doc_url": "/docs/errors#resource-not_found",
  "request_id": "req_2P9K3sample"
}

{
  "type": "https://errors.invoiceapi.mx/fiscal_profile_in_use",
  "title": "Fiscal profile is in use",
  "status": 409,
  "code": "fiscal_profile.in_use",
  "detail": "The profile is referenced by issued invoices.",
  "remediation": "Profiles with invoices are retained; rotate the CSD instead of deleting.",
  "doc_url": "/docs/errors#fiscal_profile-in_use",
  "request_id": "req_2P9K3sample"
}

{
  "type": "https://errors.invoiceapi.mx/fiscal_profile_invalid_csd",
  "title": "Invalid CSD certificate or password",
  "status": 422,
  "code": "fiscal_profile.invalid_csd",
  "detail": "The CSD .cer/.key pair could not be opened.",
  "remediation": "Verify cer_base64 is the .cer, key_base64 is the .key, and the password.",
  "doc_url": "/docs/errors#fiscal_profile-invalid_csd",
  "request_id": "req_2P9K3sample"
}

{
  "type": "https://errors.invoiceapi.mx/rate_limit_exceeded",
  "title": "Rate limit exceeded",
  "status": 429,
  "code": "rate_limit.exceeded",
  "detail": "Too many requests for this key + request class (reads and writes are limited separately).",
  "remediation": "Back off and retry after the number of seconds in the Retry-After header; batch work or lower your request rate.",
  "doc_url": "/docs/errors#rate_limit-exceeded",
  "request_id": "req_2P9K3sample"
}

{
  "type": "https://errors.invoiceapi.mx/internal_error",
  "title": "Internal server error",
  "status": 500,
  "code": "internal.error",
  "detail": "An unexpected error occurred.",
  "remediation": "Retry later; contact support with the request_id if it persists.",
  "doc_url": "/docs/errors#internal-error",
  "request_id": "req_2P9K3sample"
}

Authorizations

Authorization · string · header · required

API key: Authorization: Bearer sk_test_... or sk_live_....

Headers

Invoice-Version · string

Pin a dated API release (Stripe-style). Omit to use the current version. An unknown value returns 400 request.invalid_version. Echoed back on every response.

Example:

"2026-07-10"

Invoice-Account · string

Connect: act on behalf of one of your connected accounts (its acct_…/org_… id). Omit to act as your own organization. Not honored on /v1/api_keys.

Example:

"org_2P9connectedacct"

Idempotency-Key · string

Safely retry any POST. The first response is stored for 24h and replayed byte-for-byte for identical retries (the replay adds an idempotent-replayed: true header). Reusing the key with a different body is 409 idempotency.key_reuse; an in-flight duplicate is 409 idempotency.key_processing. This makes retrying a 502/429 safe — no duplicate stamp.

Example:

"a1b2c3d4-e5f6-4789-8abc-1234567890ab"

Path Parameters

id · string · required

Fiscal-profile id, e.g. "fp_2P9K3sample".

Minimum string length: 1

Body

multipart/form-dataapplication/json

cer · file

The raw FIEL certificate (.cer) file — no base64 needed.

key · file

The raw FIEL private-key (.key) file — no base64 needed.

password · string

FIEL private-key password.

email · string

Email that receives the signed manifiesto XML + PDF (optional).

Response

200

application/json

Default Response

object · enum<string> · required

Always "manifest".

Available options: manifest

fiscal_profile_id · string · required

The fiscal profile this manifiesto belongs to.

status · enum<string> · required

Resulting carta-manifiesto signing state.

Available options: pending_signature, signed

signed_at · string | null · required

When the manifiesto was signed (ISO-8601 UTC), or null.

already_signed · boolean · required

True when the service reported the manifiesto was already signed (no re-sign).

codigo · string · required

Raw PAC/SAT response code for the signing operation.

mensaje · string · required

Raw PAC/SAT response message.

xml_base64 · string · required

Signed carta-manifiesto XML, base64 (empty when the service reports it was already signed).

pdf_base64 · string · required

Signed carta-manifiesto PDF, base64 (empty when not returned).