The Model Context Protocol (MCP) ecosystem is experiencing a slow adoption of its latest revision, released on July 28, 2026. Despite clients shipping this updated version, which removes session IDs and introduces new RPC calls, the server side remains fragmented across five different revisions. A recent census revealed that only a small percentage of live endpoints and prominent local servers are compatible with the new protocol, with many still operating on older versions. AI
IMPACT Slow adoption of the Model Context Protocol could hinder interoperability and development in AI-related applications that rely on it.
RANK_REASON The item details a technical research finding about the adoption rate of a specific protocol revision. [lever_c_demoted from research: ic=1 ai=0.7]
- io.modelcontextprotocol/tasks
- mcp.getle.ad/mcp
- Mcp-Session-Id
- Model Context Protocol
- @modelcontextprotocol/server
- Pennyforge
- UnsupportedProtocolVersionError
- www.hood.ag/api/mcp
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