Sanctions & Due Diligence

Options Technology · Compliance · OpenSanctions + Companies House + Claude AI

OFAC · FCDO · EU · UN · 100+ lists Companies House live v4.1

Full legal name *

Relationship

Address (street, city, country)

Registration number

Jurisdiction

Reviewer initials

Total checks

Clear

Flagged / review

Cloudflare Worker proxy

Proxies all API calls server-side — OpenSanctions, Companies House, and Anthropic. Your keys live in Cloudflare as secrets.

Worker proxy URL (hardcoded — edit index.html to change)

Worker secrets required (v4.1) OS_API_KEY — OpenSanctions API key
ANTHROPIC_API_KEY — from console.anthropic.com
CH_API_KEY — Companies House API key

What's new in v4.1 Tighter name matching — OpenSanctions hits now require a close name similarity score before being flagged, eliminating false positives from keyword overlap (e.g. "Technology Co" matching unrelated sanctioned entities).