curl --request POST \
--url https://api.gigstack.io/v2/clients/csf \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: multipart/form-data' \
--form file=@example-fileconst form = new FormData();
form.append('file', '<string>');
const options = {method: 'POST', headers: {Authorization: 'Bearer <token>'}};
options.body = form;
fetch('https://api.gigstack.io/v2/clients/csf', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));import requests
url = "https://api.gigstack.io/v2/clients/csf"
files = { "file": ("example-file", open("example-file", "rb")) }
headers = {"Authorization": "Bearer <token>"}
response = requests.post(url, files=files, headers=headers)
print(response.text){
"success": true,
"data": {
"id": "client_1234567890",
"name": "ESCUELA KEMPER URGATE",
"legal_name": "ESCUELA KEMPER URGATE",
"email": "contabilidad@ejemplo.com",
"bcc": [],
"phone": "+524421234567",
"tax_id": "EKU9003173C9",
"tax_system": "601",
"use": "G03",
"address": {
"street": "Av. Constituyentes",
"exterior": "1000",
"neighborhood": "Centro",
"city": "Querétaro",
"state": "QRO",
"zip": "76000",
"country": "MEX"
},
"is_valid": false,
"efos": {
"is_valid": true
},
"metadata": {
"rfc": "EKU9003173C9",
"fiscal_type": "company",
"fiscal_status": "Activo"
},
"livemode": true,
"from": "api",
"owner": "user_1234567890",
"team": "team_1234567890",
"created_at": 1767225600000
},
"message": "Client updated with CSF data",
"timestamp": 1767225600000
}Upload CSF PDF to create or update client
Upload a CSF (Constancia de Situación Fiscal) PDF file from SAT to automatically extract fiscal information and create a new client or update an existing one.
How it works:
- Upload the CSF PDF file as
multipart/form-data - The system extracts RFC and CIF from the PDF
- Validates the fiscal information against SAT
- Creates a new client or updates an existing one with the fiscal data
Query Parameters:
client_id(optional): If provided, updates the existing client. If omitted, creates a new client.
Extracted Information:
- Legal name (Razón Social)
- RFC (Tax ID)
- Fiscal regime (Régimen Fiscal)
- Fiscal type (company/individual)
- Fiscal status
- Complete address (street, exterior/interior number, neighborhood, city, state, zip code)
gigstack Connect: Create or update clients for other teams using the team parameter.
curl --request POST \
--url https://api.gigstack.io/v2/clients/csf \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: multipart/form-data' \
--form file=@example-fileconst form = new FormData();
form.append('file', '<string>');
const options = {method: 'POST', headers: {Authorization: 'Bearer <token>'}};
options.body = form;
fetch('https://api.gigstack.io/v2/clients/csf', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));import requests
url = "https://api.gigstack.io/v2/clients/csf"
files = { "file": ("example-file", open("example-file", "rb")) }
headers = {"Authorization": "Bearer <token>"}
response = requests.post(url, files=files, headers=headers)
print(response.text){
"success": true,
"data": {
"id": "client_1234567890",
"name": "ESCUELA KEMPER URGATE",
"legal_name": "ESCUELA KEMPER URGATE",
"email": "contabilidad@ejemplo.com",
"bcc": [],
"phone": "+524421234567",
"tax_id": "EKU9003173C9",
"tax_system": "601",
"use": "G03",
"address": {
"street": "Av. Constituyentes",
"exterior": "1000",
"neighborhood": "Centro",
"city": "Querétaro",
"state": "QRO",
"zip": "76000",
"country": "MEX"
},
"is_valid": false,
"efos": {
"is_valid": true
},
"metadata": {
"rfc": "EKU9003173C9",
"fiscal_type": "company",
"fiscal_status": "Activo"
},
"livemode": true,
"from": "api",
"owner": "user_1234567890",
"team": "team_1234567890",
"created_at": 1767225600000
},
"message": "Client updated with CSF data",
"timestamp": 1767225600000
}Authorizations
Authentication Method: HTTP Bearer token.
The runtime requires the literal Bearer prefix — a bare token in the
Authorization header is rejected with 401 unauthorized.
Header Format: Authorization: Bearer YOUR_API_KEY
Your API key is a JWT. Live keys operate on live data (livemode: true);
test keys operate on isolated test data (livemode: false).
Get your key at: app.gigstack.pro/settings?tab=api
Errors: credential failures are answered by the authentication layer with a raw
{ "message": … } body, not the standardized envelope — 401 for a missing, malformed or
expired token, 403 for a revoked key or a plan without API access. See the Unauthorized
and AuthForbidden responses.
Query Parameters
gigstack Connect: Target team ID for multi-team access.
Requires gigstack Connect enabled on your team and shared billing account.
Also requires the multipleIssuerAccounts feature on your plan. Requests targeting a
team other than the one your API key belongs to return 403 without it.
Only API keys can use it: an OAuth access token sent with another team's id is rejected with
403 Team mismatch with OAuth token.
Optional — omit it entirely unless you are acting on another team. It deliberately
carries no example value so generated snippets do not emit ?team=undefined; when the
parameter is absent, the team is derived from your API key.
Example: ?team=team_xyz789
Optional client ID to update. If not provided, creates a new client.
Body
CSF PDF file from SAT