We tested 7,039 sites for MCP support; 5.8% passed a live handshake (8bitconcepts.com)

NothingHumanSearch (NHS) recently conducted an extensive probe on 7,040 websites claiming to support Machine Communication Protocol (MCP) features. Surprisingly, only 5.8% of these sites successfully completed a live handshake, revealing a significant discrepancy between claimed and actual implementations. While many sites list MCP in their documentation—often due to outdated or misconfigured resources—this high failure rate underscores a crucial challenge for developers building autonomous agents reliant on these endpoints for functionality. For agent developers, relying on static MCP directories could lead to wasted resources and inefficiencies, as most unverified sites may not be functioning as advertised. The findings highlight a gap in the ecosystem, particularly in high-value sectors like finance and healthcare, which still feature limited MCP support. While developer and AI-native tools dominate the MCP landscape, areas such as clinical documentation and underwriting assistance could benefit from robust agent systems, presenting a ripe opportunity for innovation. As the need for genuine MCP implementations grows, the data suggests that developers should focus on actively verified sources to ensure efficient integration and maximum operational efficacy. This shift from static confirmations to live verifications could greatly enhance the reliability and scope of AI-driven tools in critical verticals.