Bonafide

Bonafide is an open-source Model Context Protocol (MCP) server designed to tackle the challenge of identifying genuine AI agents versus simple proxy relays. Unlike traditional reverse CAPTCHAs that can be bypassed by forwarding challenges to LLM APIs, Bonafide moves verification inside the MCP session. It implements a novel approach using server-pushed, multi-turn verification challenges inspired by SMHL, where each round depends on the previous response. This creates serial dependencies that compound proxy relay latency, providing a measurable signal to confirm the presence of an actual AI agent with an LLM runtime.

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