Blog
Guides and tutorials to get the most out of Tlaloc APIs.
Stop Asking for the Tax Status Certificate: Validate the RFC in Real Time
Mexico's SAT made it official: you can no longer require the CSF to invoice, and there are fines for those who do. Validate the RFC in real time against the registry — it exists, it's active, it can receive invoices — before you stamp, no manual copy of the CSF.
Read moreValidate CURPs in Batch: From Whole Lists to Ready Results
Send your full list of CURPs in a single request and receive the validated results. No orchestration code, no manual retries, no lost progress.
Read moreValidate Payment Receipts with Artificial Intelligence
Automate SPEI transfer verification by combining an AI assistant with the Tlaloc MCP. Pass a payment receipt image and get instant validation.
Read moreHow to Validate SPEI Payments with the Electronic Payment Proof
Learn how to verify SPEI transfers against Banco de Mexico's official records using the Tlaloc API.
Read moreHow to Set Up the Tlaloc MCP Server
Connect ChatGPT, Claude, or any AI assistant to official Mexican data in minutes. Step-by-step guide to configure the MCP server.
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