OpenWarrant — Reference Verification

You'd reach for this when you need to programmatically validate factual claims in documents. It checks that citations actually resolve to real sources, verifies those sources support the claims being made, recalculates any mathematical assertions, and flags statements that lack backing evidence. Think automated fact-checking for research papers, reports, or any document making verifiable claims. The server exposes verification operations over streamable HTTP, so you can pipe documents through it and get back structured feedback on what holds up and what doesn't. Useful for quality control pipelines, academic writing workflows, or anywhere you need to catch unsupported assertions before they ship.