MessengerX.io vs Not Human Search

MessengerX.io (built on the Machaao platform) lets developers register a free account through its Dev Portal, then run a webhook-based chatbot server that receives encrypted incoming message payloads and sends back rich replies — quick-reply buttons, media carousels, and more. The consumer-facing site has repositioned around monetizable AI companion characters rather than the general-purpose "ML chat apps" framing of the original docs, but the developer portal (portal.messengerx.io) and the webhook API docs (messengerx.rtfd.io) are both still live and reachable. Building a bot is free; monetization comes from revenue-sharing on the consumer AI-companion product.

Not Human Search indexes websites and MCP servers by "agentic readiness" — how easily an AI agent can interact with a site via APIs, machine-readable docs, or MCP — exposing search, per-domain reports, and a live /check crawl that returns a 7-signal readiness score. It ships a public OpenAPI spec and an llms.txt file at its API root, with anonymous access to basic queries capped at a free 10-checks-per-hour rate limit, and Stripe-billed starter/pro/scale plans for higher-volume access or commerce endpoints like score monitoring and GEO score-fix services.