Citation Verification Python Packages

web-researcher-mcp

The AI research assistant that cites real sources honestly — and searches the web. Your AI research assistant that cites real sources and stays honest. Works with Claude, Cursor, any MCP client.

ethos-pdf

Open-source verifier for document citations, source evidence, RAG, and agents, with built-in document parsing.

warrantos

WarrantOS: a stdlib-only Claude Code plugin and CLI that holds AI-assisted writing to a burden of proof - every load-bearing claim needs a source, a [CITE NEEDED], or a logged BLOCK - catches AI scaffold residue, and seals each run into an offline-verifiable .warrant audit trail. MIT.

opendraft

Free & open-source AI research-paper writer: 19 agents draft 20k-word academic papers in ~10 min with citations verified against CrossRef/OpenAlex/arXiv. Export PDF/Word/LaTeX. Hosted at openpaper.dev

rigorously

Automated research quality assurance — catches fabricated citations, overclaimed results, irreproducible numbers, and statistical misinterpretations.