Fact Checking 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.

citevahti

Run unit tests on your manuscript. Check every manuscript claim against its cited evidence. Human-first, AI-second, Zotero-audited, local-first.

openfactcheck

An Open-source Factuality Evaluation Demo for LLMs

wauldo

Official Python SDK for Wauldo — verified AI answers with zero hallucinations. pip install wauldo

wauldo-nemo

Independent claim-level answer verification as NeMo Guardrails output rails, powered by Wauldo.

cross-validated-search

Search infrastructure for AI agents: free by default, MCP-ready, LLM-context aware, and production-grade when needed.

foghorn-ai

Fact-level staleness detection for AI agent memory

argus-debate-ai

Debate-native multi-agent AI framework that eliminates LLM hallucination, overconfidence, and opacity. Structures knowledge evaluation as adversarial multi-round debates over a Conceptual Debate Graph (C-DAG) with Bayesian aggregation, CRUX protocol, 8 novel Evolution extensions, 27+ LLM providers, 50+ tools, and W3C-compliant provenance tracking.

groundguard

Verify LLM output against your source documents. Catch hallucinations in RAG pipelines and agentic workflows before they reach users.

footnote-mcp

MCP server for source-grounded web research — search, fetch, extract, and verify that a claim is actually supported by its source.

ai-provenance-tracker

Open-source multimodal AI provenance detection platform with explainable evidence cards, provider consensus, and benchmark-driven quality gates.

paper-verify

Standalone citation fact-checking tool for markdown/docs — extract, fetch, judge, score, report.

semviqa

SemViQA: A Semantic Question Answering System for Vietnamese Fact-Checking

proof-engine-wiki

AI agent skill that creates formal, verifiable proofs of claims — every fact computed or cited, never asserted

zero-api-key-web-search

Search infrastructure for AI agents: free by default, MCP-ready, LLM-context aware, and production-grade when needed.

browseai

Reliable research infrastructure for AI agents. Evidence-backed web search with citations, confidence scores, and Clarity anti-hallucination. MCP server, REST API, Python SDK.

browseaidev

Reliable research infrastructure for AI agents. Evidence-backed web search with citations, confidence scores, and Clarity anti-hallucination. MCP server, REST API, Python SDK.

proof-citations

AI agent skill that creates formal, verifiable proofs of claims — every fact computed or cited, never asserted

proof-engine-registry

AI agent skill that creates formal, verifiable proofs of claims — every fact computed or cited, never asserted

evidence-gate-py

Stop your AI from making up facts about your own data. A pre-generation grounding gate for LLM/RAG apps — zero-dep, MIT, JS + Python, with an MCP server.

llamaindex-browseaidev

LlamaIndex integration for BrowseAI Dev — research infrastructure with Grounded Intelligence for AI agents

truthcheck

Open source AI content verification. Score claims 0-100 to detect misinformation.

free-web-search-ultimate

Universal Search-First Knowledge Acquisition Plugin for LLMs (MCP + CLI-Anything)

langchain-browseaidev

Reliable research infrastructure for AI agents. Evidence-backed web search with citations, confidence scores, and Clarity anti-hallucination. MCP server, REST API, Python SDK.