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Mexico Supplier RFC Precheck (SAT 69-B EFOS Lookup)
x402
Mexico Supplier RFC Precheck (SAT 69-B EFOS Lookup) is a paid API for AI agents from mexico-agent-toolkit.spain-agent-toolkit.workers.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-31).
Validates a Mexican RFC identifier and checks whether the supplier appears on the SAT 69-B EFOS blacklist, returning a pass/fail verdict with detailed compliance status.
Price / call$0.02
Success—
StatusUnknown
How this service works
Pay-per-call Mexico utilities for AI agents over x402 (USDC on Base). No accounts, no API keys. Mexican RFC validation (offline) and SAT 69-B (EFOS) lookup by RFC. Data: SAT, Listado completo 69-B, datos abiertos (Libre Uso MX), cut-off 2026-09-30. Not an official SAT service and not endorsed by the SAT. / No es un servicio oficial del SAT ni está avalado por el SAT. Privacy notice: /privacy
Output
Returns a JSON object with: the queried RFC, a top-level verdict ('ok' or flagged), an issues array listing any problems found, rfcCheck object with validity flag and entity type (persona_moral or persona_física), and sat69b object with a listed boolean and situation field describing any EFOS classification. All checks are performed using offline RFC validation logic and the latest SAT Listado 69-B open dataset (cut-off 2026-09-30).
Example use cases
Pre-payment supplier screening
“Before we wire payment to this new Mexican vendor, can you verify their RFC XAXX010101000 is valid and confirm they're not flagged on the SAT 69-B EFOS list?”
Accounts payable compliance automation
“We received an invoice from a Mexican company with RFC ABC123456789 — can you run a quick SAT compliance check to make sure their RFC is legitimate and they're not a known tax fraud entity?”
Onboarding a new Mexican vendor
“We're onboarding a new supplier from Mexico with RFC GFM8507317R8 — please validate their RFC format and check if they appear anywhere on the SAT 69-B blacklist so we know it's safe to proceed.”
Technical details
Endpoint
GEThttps://mexico-agent-toolkit.spain-agent-toolkit.workers.dev/v1/mx/supplier/precheck?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to screen a Mexican supplier's RFC for compliance with SAT regulations before processing payments or onboarding vendors. It combines offline RFC format validation with a live lookup against the SAT 69-B EFOS blacklist in a single pay-per-call call requiring no API keys or account setup. Ideal for AI agents running automated accounts-payable or procurement workflows involving Mexican counterparties.
Side effects
- RFC not provided or malformed (not 12–13 characters) — returns validation error
- RFC structurally invalid — rfcCheck.valid returns false with reason
- RFC listed on SAT 69-B — verdict reflects flagged status and situation field populated
- Network or worker error — HTTP 5xx response
- Payment not received via x402 — HTTP 402 Payment Required before data is returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"rfc": "EKU9003173C9",
"issues": [],
"sat69b": {
"listed": false,
"situation": null
},
"verdict": "ok",
"rfcCheck": {
"type": "persona_moral",
"valid": true
}
}
}Tags
x402
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