RFC lookup
One at a time at the moment of decision, or in batches to review a whole supplier file.
For onboarding, origination and periodic reviews.
API 69b.mx · SAT AND DOF
API to check the SAT blacklists.
Check suppliers and applicants by RFC against the 69-B list and other SAT and DOF publications, without leaving your system. Each source says whether it found anything and whether it could be checked.
Result per source
Change notices
Verifiable constancias
RFC DEMO010101AB1
RESULT PER SOURCE
- 69-B list SATNo match
- Art. 49 Bis · false CFDI DOFNot publishedchecked through yesterday
- CSD without effect SATNo match
- Not located SATNo match
- Final tax debts SATNo match
- Enforceable tax debts SATNo match
No findings in any source.
THREE WAYS TO INTEGRATE
Ask. Follow. Document.
Monitor changes
Register the RFCs you care about. When a source publishes a change, your system gets the notice by webhook and also finds it in an event history.
For supplier portfolios that change over time.
Generate constancias
Save a dated lookup in a PDF (in Spanish) with a public verification code, ready for the file.
It documents the lookup, not the delivery of goods or services. On API Free, test only.
ANSWERS WITH CONTEXT
Every result says what was checked and when.
Not just “it is there” or “it is not”: the response carries the detail of each source and the date of its data, ready for your file or for an automatic rule.
Each list answers separately
With the status as published: presumed, final, disproved or favorable ruling. No traffic lights to interpret.
How recent each data point is
Each source says when it was updated, and the DOF up to which date it was reviewed. Useful when you have to justify a decision.
Approve without manual review
A single flag confirms the lookup covered all the sources, so your system can decide with confidence. If a list is being updated you will know, and that lookup is not billed.
What each lookup checks
The data, as published by the SAT and the DOF. When we add a source, it appears in the same response without changing your integration.
- SAT
69-B list
Simulated operations: presumed, final, disproved and with a favorable ruling
- DOF
Article 49 Bis
Taxpayers that issued false CFDI
- SAT
CSD without effect
Digital seal certificates left without effect
- SAT
Not located
Taxpayers not located at their tax address
- SAT
Final and enforceable tax debts
Taxpayers with published tax debts
Want to see the exact format of the response? See the documentation →
DESIGNED FOR REAL WORKFLOWS
Where it can help
The lookup shows up right where the decision is already made.
SOFOMs and fintechs
Credit applicationRFC lookup
Add one more data point to the origination file. See the API for lending →
ERP and procurement software
Supplier onboardingBuilt-in check
Show the result per source inside the supplier record.
Accounts payable
Supplier fileBatch lookup
Check every RFC before scheduling payments.
Compliance teams
Monitored RFCsChange notice
Connect new findings to your internal reviews.
API PLANS · MXN
Start for free. Grow at your own pace.
Both plans query the same data, with the same freshness. The volume changes, and valid constancias are a Paid feature.
API FREENo card
$0MXN / month
For small operations: lookups, monitoring and webhooks within fixed limits, and test constancias for your integration.
100lookups / month
5Monitored RFCs
3test constancias in total
✓ Webhook and event history
✓ Up to 10 requests per minute
✓ Support through the documentation
No charges: when you reach the lookup limit, the API says so until next month. The 3 test constancias are per account, to build your integration, and carry the watermark “DOCUMENTO DE PRUEBA — sin validez” (Spanish for “test document, not valid”).
API PAIDCard payment
$999MXN / month + usage
Monthly base with volume included. VAT included.
5,000lookups included
1,000monitored RFCs included
$29per constancia; down to $9 with volume
✓ Webhook and event history
✓ Up to 120 requests per minute
✓ Automatic monthly CFDI invoice (in Spanish)
✓ Support by email
Extra usage is never blocked: we email you when the usage charge for the period exceeds 1,000 MXN, and again at later amounts.
Activate your API and upgrade to API Paid from your profile: you pay by card on a Stripe page (in Spanish) and cancel whenever you want. Your integration does not change when you upgrade.
Get API PaidExtra usage on API Paid
GRADUATED RATES · VAT INCLUDEDLOOKUPS
$0.15 each · 5,001 to 100,000
$0.08 each · from 100,001
MONITORED RFCS
$0.50 each · 1,001 to 20,000
$0.25 each · from 20,001
Price per billing period.
CONSTANCIAS
$29 each · 1 to 100
$19 each · 101 to 1,000
$9 each · from 1,001
Per billing period, with no included quota.
Only complete lookups count.Monitored RFCs are measured by the active maximum of the period.Each tier bills only its own units.Webhook and history have no per-event charge.
High volume or procurement requirements?
Above about 25,000 MXN a month, or if you need an annual contract, SLA, security questionnaire or invoice before payment, we quote a contract.
API Free resets every calendar month; API Paid follows its monthly billing period. The API is billed separately from the web plans.
FOR FINANCE AND ENGINEERING
What they will ask you before approving it.
- A CFDI invoice every month
- You register your tax details once; after that, the invoice (in Spanish) arrives by itself after each card payment.
- No surprises on the bill
- Prices include VAT, usage is visible in your profile and we send email notices when the usage in the period grows.
- You only pay for complete answers
- Lookups that do not cover all the sources, invalid RFCs and failed requests are not billed. A repeated constancia is not billed twice.
- Notices that do not get lost
- Signed webhooks, with retries for about 6 days, and a 90-day history to recover anything missed.
- Keys under your control
- Several keys per account, each one revocable without affecting the others or your web access.
- Separate from the web plans
- The API account has its own plan, usage and billing, with the same 69b.mx sign-in.
START WITH THE API
Bring the lookup into your system.
Sign in to 69b.mx and activate your API account from your profile. You get your first key when you activate it; your technical team has everything else in the documentation.
Prefer to talk it over first? Write to us about your integration.
- 01 / ACTIVATE
Create your API account and get your first key.
- 02 / INTEGRATE
Connect your system following the documentation.
- 03 / OPERATE
Look up, monitor and document RFCs from your workflow.