Stateless MCP 2.0 Spec Reignites Developer Interest
JeremyCMorgan · x · 2026-08-12
Prominent developer Simon Willison notes that the new stateless MCP (Model Context Protocol) specification has reignited his interest in the protocol.
Key Improvements in MCP 2.0
- Removes protocol-level sessions: The new 2026-07-28 spec eliminates initialization handshakes and session states.
- Infrastructure-friendly: Remote MCP servers can finally behave like normal HTTP infrastructure, greatly simplifying load balancing, serverless deployment, tracing, and caching.
Background on MCP Evolution
- MCP was originally introduced by Anthropic in late 2024 to provide a standard way for LLM agents to call external tools.
- During 2025, MCP was somewhat eclipsed by Anthropic's Skills, which allowed agents to execute tasks flexibly via terminal and curl.
- Willison argues that giving an agent a shell environment is fraught with risk and requires a strong model, whereas MCP tools are easier to audit and control, which is why he is bullish on MCP again.
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