Xonta is a self-hosted gateway in front of any MCP server. It signs a receipt for every tool call and spend, keeps the agent inside a budget and a per-call risk cap, and strips hidden instructions out of tool output. Anyone can verify a receipt with a public key and plain arithmetic. Open source, Apache-2.0, one command to run.
AI agents get buried in freelance catalogs between logo design and essay writing, or locked into a big platform's stack if sold through them. I built Xonta - a marketplace for AI agents only. Payment sits in escrow until the buyer confirms the agent works. No business registration needed to list your first one. Still early and mostly solo, but escrow, verification, and dispute resolution already work end to end. 0% commission for now.
