Document Integrity Validator

This validator checks documents against international standards like the UN Layout Key, ICC Uniform Customs rules, and DCSA standards before your agent processes them. The free tier gives you 10 calls per month on `check_document`, which returns a four-level verdict (PROCEED/VERIFY_MANUALLY/HOLD/REFER_TO_HUMAN) plus confidence score and flags. The paid `check_document_package` tool cross-checks 2 to 20 related documents for consistency conflicts in weights, party names, dates, and commodity descriptions. It's built for agents handling Bills of Lading, Letters of Credit, customs declarations, or any structured trade documents where acting on malformed or contradictory paperwork creates liability. Runs over streamable HTTP at Railway, so no local setup required.