Verify an RFC | RFC Validation API

POST /v1/rfc/verify

Two modes depending on what you submit. Both complete in roughly 1-2 seconds.

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POST /v1/rfc/verify

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Mode 1: RFC only (padrón check)

Submit just the RFC to confirm it is registered and active with SAT. Use this to validate any RFC quickly without needing the customer's name or postal code.

curl bash

curl -X POST https://rfccheck.com/v1/rfc/verify \
  -H "x-api-key: rfc_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{"rfc": "ACME010101AAA"}'

Mode 2: RFC + name + zip (full combo)

Submit all three fields to confirm a complete combination. Use this to verify customer-supplied data before issuing an invoice, or to re-validate an existing record.

curl bash

curl -X POST https://rfccheck.com/v1/rfc/verify \
  -H "x-api-key: rfc_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "rfc": "ACME010101AAA",
    "name": "ACME CONSULTORES",
    "zip": "06600"
  }'

Provide name and zip together, or neither. Providing only one is rejected with 422.

Response (200)

200 OK json

{
  "rfc": "ACME010101AAA",
  "valid": true,
  "message": "RFC válido, y susceptible de recibir facturas"
}