Pi 1.0 Reverses MCP Stance and Launches Codemode

Pi 1.0 shipped on October 1, 2026, with MCP support built into its core, arriving alongside a new feature called Codemode. The release reverses a position Pi had held publicly for about a year. The pi.dev landing page stated plainly that "Pi does not support MCP," and Pi's creator, Mario Zechner, wrote a post in November 2025 arguing that developers probably do not need the protocol at all. DEV Community, which covered the launch on October 4, described Pi as having worn that refusal as a badge for the past year.

Earendil — the company formed by Armin Ronacher and Colin Daymond Hanna, which acquired Pi — followed the release with an explainer post titled "You Said No, MCP!" The Register characterized the move as a 180-degree turn.

As of the DEV Community report, the details available cover the October 1 launch, the MCP support built into the core, the accompanying Codemode feature, Earendil's explainer post, and outside descriptions of the change as a reversal. The material does not specify what Codemode does, nor does it explain why Pi changed course. Those points remain open.