Mexico RFC Validator

Verificador RFC Mexico - SAT + Lista 69-B

leongael/verificador-rfc-mexico

Verify Mexican RFC tax IDs against SAT and check Lista 69-B (EFOS) blacklist. Batch support up to 100 RFCs. Returns status, taxpayer name, and blacklist flags. Essential for CFDI compliance and supplier verification.

RFC-to-Changelog Generator

c4m3r0n808/rfc-to-changelog

Turn IETF RFC numbers into plain-English summaries your team can actually use. Extracts title, abstract, section map, and what each RFC obsoletes or updates, straight from rfc-editor.org. Built for network engineers and DevOps who track protocol changes without reading 80-page specs.

RFC Editor Index Scraper

parseforge/rfc-editor-scraper

Scrapes RFC metadata from the RFC Editor index. Returns each document as a flat row with number, title, authors, status, stream, and abstract. Filter by keyword, status, or stream, or fetch specific RFCs by number.

SAT Mexico 69-B EFOS Taxpayer Blacklist Scraper

scrapers_lat/sat-69b-scraper

Extract Mexico SAT Lista 69-B (EFOS) blacklist of taxpayers presumed or confirmed to issue fake invoices, or screen any RFC. Get RFC, name, status (Presunto, Definitivo, Desvirtuado, Sentencia Favorable), oficio numbers and DOF publication dates. Export JSON, CSV, Excel.

Validate agent JSON against JSON Schema and return deterministic repairs as RFC 6902 patches.

Texas Franchise Tax Account Status Scraper

crawlerbros/texas-franchise-tax-scraper

Search Texas Comptroller's Franchise Tax Account Status registry by entity name, taxpayer number, or SOS file number. Get registration status, registered agent, addresses, and officers. No login required.

Email Validator — Bulk MX, Disposable & Score

khadinakbar/email-address-validator

Fast, cheap email list validator. RFC 5322 syntax, DNS MX lookup, disposable detection (3000+ domains), role & free-provider tagging, did-you-mean typo suggestions, 0–100 deliverability score. No external API key. ~$0.90 per 1,000 emails. MCP-ready.

Security.txt Checker

gifted_wagon/security-txt-evidence-auditor

Discover and audit RFC 9116 security.txt files with contact, expiry, canonical, policy, encryption, and line-level evidence.

Verify email addresses in bulk and clean your list before you send. Checks RFC syntax, live MX records and deliverability, flags role accounts and disposable domains — cutting bounces and protecting sender reputation. No mail is ever sent. $0.001 per email, 500 per run.

Bulk Email Verifier & Validator — Syntax, MX, Disposable, Score

ntriqpro/bulk-email-validator

Verify email addresses in bulk before you send: RFC syntax check, MX and mail-infrastructure lookup, 120k+ disposable-domain list, role-based and free-provider flags, plus a 0-100 quality score per address. Clean the list and cut bounce rates on your next campaign.