# RedTape, free tier, GET /v1/mx/rfc/validate: Business verification API > Validate a Mexican RFC (Registro Federal de Contribuyentes) offline: format (persona moral 12 chars, persona física 13), the YYMMDD date part, the homoclave check digit (SAT mod-11), and the generic RFCs XAXX010101000 / XEXX010101000, plus a cross-check against the SAT 69-B list (operaciones presuntamente inexistentes / EFOS). RedTape's Free tier plan for the business verification API costs $0.00 per 1,000 companies. We check each provider's docs for 11 fields: Registered name, Entity number, Tax ID, Entity type and 7 more. RedTape's docs list none of the 11. You get up to 600 calls a month. In [our business verification API benchmark](https://datacircle.dev/best-business-verification-api.txt), the best plan from RedTape scores 0.0 out of 100. This plan is free. We rank 1,735 plans for business verification APIs by price. Half the plans cost $7.895 or less per 1,000 companies. [See the best free business verification API plan.](https://datacircle.dev/best-business-verification-api.txt) [SafeDeal's ₸50,000 (about $110) monthly plan](https://datacircle.dev/business-verification-apis/safedeal/50000-monthly/llms.txt) is the cheapest paid plan per 1,000 companies. SafeDeal's business verification API costs nothing beyond the plan price. SafeDeal's plan covers companies in Kazakhstan only. [ApiZero's CNY 399 yearly plan](https://datacircle.dev/business-verification-apis/apizero/cny-399-yearly-diamond-membership-get-api-company-search/llms.txt) costs the least for 10,000 companies a month: about $4.97. [Scoris' €19 pack](https://datacircle.dev/business-verification-apis/scoris/19-pack/llms.txt) covers any number of companies in 8 countries only. Scoris' €19 pack costs less up front than SafeDeal's ₸50,000 (about $110) monthly plan. [GovFiles](https://datacircle.dev/business-verification-apis/govfiles/top-up/llms.txt), [Didit](https://datacircle.dev/business-verification-apis/didit/top-up-from-50/llms.txt) and [CompanyData.com](https://datacircle.dev/business-verification-apis/companydata-com/249-monthly/llms.txt) are the best business verification API providers in the Datacircle benchmark for companies in any country. - This page: https://datacircle.dev/business-verification-apis/redtape/free-tier-get-v1-mx-rfc-validate - [Business verification API in 2026: the 8 best compared](https://datacircle.dev/best-business-verification-api.txt) - Get it: https://mx.redtapeapi.com/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing - Request: `GET https://mx.redtapeapi.com/free/v1/mx/rfc/validate` - API key: not needed - Its API docs: https://mx.redtapeapi.com/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing#/paths/~1v1~1mx~1rfc~1validate - Sold by: RedTape (https://co.redtapeapi.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing) - Checked: 2026-11-10 ## In the answer - Completeness: 0% ## Price - $ per 1,000 companies: $0.00 - Per: call - Billing: free ## Aggregators - Aggregators: none ## Charges - Also pays for: from the same budget: SAT 69-B lookup ## Not found - $ per 1,000 calls that find nothing: $0.00 ## In their words - Their pitch: Validate a Mexican RFC (Registro Federal de Contribuyentes) offline: format (persona moral 12 chars, persona física 13), the YYMMDD date part, the homoclave check digit (SAT mod-11), and the generic RFCs XAXX010101000 / XEXX010101000, plus a cross-check against the SAT 69-B list (operaciones presuntamente inexistentes / EFOS). ## Data - Countries: Mexico - Keep data: no API terms - Use data: no API terms ## Plan - Pay: $0 - Enough for: 600 calls a month ## Rate limit - Per day: 20 - Batch: 1 ## Speed - Answer: in the call ## The call - You send: rfc - Method: GET - Path: /v1/mx/rfc/validate ## About the plan - Plan: Free tier - Who can get it: anyone, with no payment, account or API key, for 20 calls a day per client over the free routes together ## The 9 fields the plan's answer can hold normalized RFC, valid, RFC type, format check, date check, check digit check, SAT 69-B listed, SAT 69-B situation, SAT 69-B data cut-off date ## RedTape's plans (2) - [RedTape, free tier, GET /v1/mx/rfc/validate](https://datacircle.dev/business-verification-apis/redtape/free-tier-get-v1-mx-rfc-validate/llms.txt): $0.00 per 1,000, 0% complete - [RedTape, pay as you go, x402 pay per call, GET /v1/mx/rfc/validate](https://datacircle.dev/business-verification-apis/redtape/pay-as-you-go-x402-pay-per-call-get-v1-mx-rfc-validate/llms.txt): $2.00 per 1,000, 0% complete ## RedTape's calls for this API (8) - `GET /v1/company/{nit}/status`: [RedTape, free tier, GET /v1/company/{nit}/status](https://datacircle.dev/business-verification-apis/redtape/free-tier-get-v1-company-nit-status/llms.txt) - `GET /v1/mx/rfc/validate`: [RedTape, free tier, GET /v1/mx/rfc/validate](https://datacircle.dev/business-verification-apis/redtape/free-tier-get-v1-mx-rfc-validate/llms.txt) - `GET /v1/mx/sat/69b`: [RedTape, free tier, GET /v1/mx/sat/69b](https://datacircle.dev/business-verification-apis/redtape/free-tier-get-v1-mx-sat-69b/llms.txt) - `GET /v1/dossier`: [RedTape, pay as you go, x402 pay per call, GET /v1/dossier](https://datacircle.dev/business-verification-apis/redtape/pay-as-you-go-x402-pay-per-call-get-v1-dossier/llms.txt) - `GET /v1/company/:nit/status`: [RedTape, pay as you go, x402 pay per call, GET /v1/company/:nit/status](https://datacircle.dev/business-verification-apis/redtape/pay-as-you-go-x402-pay-per-call-get-v1-company-nit-status/llms.txt) - `GET /v1/eu/vat/validate`: [RedTape, pay as you go, x402 pay per call, GET /v1/eu/vat/validate](https://datacircle.dev/business-verification-apis/redtape/pay-as-you-go-x402-pay-per-call-get-v1-eu-vat-validate/llms.txt) - `GET /v1/mx/supplier/dossier`: [RedTape, pay as you go, x402 pay per call, GET /v1/mx/supplier/dossier](https://datacircle.dev/business-verification-apis/redtape/pay-as-you-go-x402-pay-per-call-get-v1-mx-supplier-dossier/llms.txt) - `GET /v1/mx/supplier/precheck`: [RedTape, pay as you go, x402 pay per call, GET /v1/mx/supplier/precheck](https://datacircle.dev/business-verification-apis/redtape/pay-as-you-go-x402-pay-per-call-get-v1-mx-supplier-precheck/llms.txt) ## RedTape's APIs (3) - [RedTape: company enrichment API pricing, 2 plans](https://datacircle.dev/company-enrichment-apis/redtape/free/llms.txt) - [RedTape: business verification API pricing, 2 plans, GET /v1/mx/rfc/validate](https://datacircle.dev/business-verification-apis/redtape/free-tier-get-v1-mx-rfc-validate/llms.txt) - [RedTape: company discovery API pricing, 1 plan](https://datacircle.dev/company-discovery-apis/redtape/pay-as-you-go/llms.txt) ## RedTape: business verification API alternatives - [Radicado Uno, COP 619,900 monthly](https://datacircle.dev/business-verification-apis/radicado-uno/cop-619900-monthly/llms.txt): $1.955 per 1,000, 36% complete, 1 week - [eucompliance.tools, pay as you go, Pay per call (x402), GET /x402/vat/{vat_id}](https://datacircle.dev/business-verification-apis/eucompliance-tools/pay-as-you-go-pay-per-call-x402-get-x402-vat-vat-id/llms.txt): $2.00 per 1,000, 27% complete, live - [Verif Entreprise FR, pay as you go, x402 pay per call, GET /v1/search](https://datacircle.dev/business-verification-apis/verif-entreprise-fr/pay-as-you-go-x402-pay-per-call-get-v1-search/llms.txt): $2.00 per 1,000, 45% complete, live - [Tanod, pay as you go](https://datacircle.dev/business-verification-apis/tanod/pay-as-you-go/llms.txt): $2.00 per 1,000, 27% complete, live - [NeuralVerge, $50 monthly, Base, POST /functions/v1/run-registry-companies-search](https://datacircle.dev/business-verification-apis/neuralverge/50-monthly-base-post-functions-v1-run-registry-companies-search/llms.txt): $2.00 per 1,000, 55% complete ## Sources From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-10. - https://co.redtapeapi.com/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing - https://co.redtapeapi.com/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing - https://co.redtapeapi.com/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing - https://co.redtapeapi.com/privacy?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing - https://es.redtapeapi.com/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing - https://es.redtapeapi.com/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing - https://mx.redtapeapi.com/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing - https://mx.redtapeapi.com/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing - https://mx.redtapeapi.com/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing