Agent spending verification — budget caps, spending policies, and cross-agent budget tracking. Works with AP2, MPP, x402, or any payment rail.
agent-verifier is an early-stage TypeScript project in the AI payments / x402 ecosystem, focused on agent-payments, ai-agents, ap2, mpp. It currently has 0 GitHub stars and 0 forks, and sits alongside related tools like agent-payment-protocols, sardis, mcp-pay.
A neutral landscape analysis of AI agent payment protocols (x402, MPP, L402, Google AP2, Visa TAP + ICC, Mastercard Agent Pay, Amex ACE, Google/Shopify UCP, OpenAI ACP, and others). Maintained by Genesis Software Group, Copenhagen. Updated April 2026. CC BY 4.0.
The open authority layer + SDKs for AI-agent payments. Thin Python/TS clients, an MCP server, framework adapters (LangChain/CrewAI/Hermes/OpenClaw/…), and @sardis/reference — a pure policy simulator + AP2/TAP/x402 verifiers showing exactly how Sardis decides if an agent may spend. The hosted engine that moves money is private.
Payment awareness layer for MCP (Model Context Protocol)