ClaimGraph

Web App • January 19, 2026

Visualize claims and their relationships across multiple sources. Enter any research question and get an interactive knowledge graph mapping supporting and contradicting perspectives.

Next.js
React
TypeScript
React Flow
Anthropic Claude
Exa API

Key Features

  • •Multi-stage AI pipeline with query expansion and stance classification
  • •Interactive knowledge graph with dagre hierarchical layout
  • •Propositional chunking for atomic fact extraction
  • •Source diversity enforcement with balanced perspectives
  • •Real-time SSE streaming with progress updates
  • •Every claim links to exact quotes and original sources

ClaimGraph transforms overwhelming information landscapes into clear, interactive maps. When researching topics with conflicting information, users face scattered sources, missing context, and no way to trace claims back to their origins. ClaimGraph solves this by visualizing the full structure of discourse.

How It Works

  1. Query Expansion - AI generates 4 diverse search angles from your question
  2. Over-fetch Sources - Retrieves 40 candidates via Exa semantic search
  3. Stance Classification - Each source rated as supports/contradicts/neutral
  4. Source Balancing - Selects 20 sources with guaranteed diverse perspectives
  5. Propositional Chunking - Extracts 10-15 atomic facts per source
  6. Claim Analysis - Builds knowledge graph with relationships using Claude Sonnet
  7. Graph Visualization - Interactive React Flow with dagre layout

Key Technical Decisions

  • Streaming with SSE - Real-time progress updates instead of 60-second loading spinners
  • Propositional Chunking - Converts context-dependent text ("this study found...") into standalone facts
  • Structured Outputs - Claude's JSON schema validation ensures type-safe responses
  • Domain Capping - Max 2 results per domain prevents search bias
  • Lazy Loading - React Flow dynamically imported to reduce initial bundle by 150KB

Tech Stack

  • Framework: Next.js 16 with App Router, TypeScript
  • Visualization: React Flow with dagre layout algorithm
  • AI: Anthropic Claude (Haiku for simple tasks, Sonnet for reasoning)
  • Search: Exa API for semantic web search
  • Styling: Tailwind CSS 4, shadcn/ui