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[Home](/en)[Verify](/en/verify) e.firma validation 

# Validate SAT e.firma (FIEL) in real time

Confirm that the electronic signature is active, has not been revoked, and matches the declared RFC — before signing a contract, loan, or agreement.

TIER 1 — VERIFY

Starting price

From $6 MXN per query

[Request access](https://meetings.hubspot.com/israel-madrid/lead-discovery)

## What it is and how it works

The e.firma (formerly FIEL) is SAT's legal equivalent of a handwritten signature. CRiskCo Verify queries the certificate status directly against SAT's registry and returns validity, holder, effective dates, and revocation reason when applicable.

### Use cases

-   Signing digital contracts, promissory notes, and agreements 
-   Onboarding clients and suppliers on regulated platforms 
-   Pre-disbursement validation for banks and lenders 
-   Advanced electronic signature workflows 

### What it returns

-   Certificate status (active / revoked / expired) 
-   Holder RFC 
-   Name / legal name 
-   Certificate serial number 
-   Issue and expiration dates 
-   Revocation reason and date (if applicable) 

### Best for

E-signature platforms Banks and fintechs Notaries and legal firms Invoicing platforms 

## Scale when you need to

Verify is the first step. Unlock SAT/CIEC for depth and Enterprise for continuous monitoring.

TIER 1 — VERIFY

### Verify — RFC only

One-off queries: UBO, e.firma, SIGER, and RFC data validation. No CIEC, no friction.

[Explore Verify](/en/verify)

TIER 2 — FINANCIAL INTELLIGENCE

### Financial Intelligence

Analyze CFDI, cash flow, and fiscal behavior with SAT/CIEC data. Built for credit decisions.

[See plans](/en/pricing)

MONITORING & ALERTS

### Monitoring & Alerts

Continuous portfolio tracking, network exposure, and compliance alerts in real time.

[See monitoring](/en/pricing)

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### Build your own ML models & scores

Train custom risk and scoring models on CRiskCo Labs using your data and our infrastructure.

[Explore Labs](/en/labs)

MCP INTEGRATION

### AI-ready access (MCP)

Early access

Connect any AI assistant or agentic workflow to CRiskCo data through the Model Context Protocol.

[Explore MCP](/en/solutions/mcp)

## Get started with e.firma validation today

Book a demo and activate your first query bundle.

[Book a demo](https://meetings.hubspot.com/israel-madrid/lead-discovery)[See pricing](/en/pricing#verify-pricing)

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