Real-time fact-checking agent. Verifies a claim against live web sources and returns a structured verdict with evidence and confidence. Pay per call in USDC on Base via x402: standard verify (0.10), deep multi-angle check (0.50), batch of up to 10 claims (0.75), natural-language agent endpoint with A2A and streaming (0.10). Also an MCP server (npx verity-mcp) with card credits.