Pi adds MCP support in 0.99.0 via Codemode sandbox
Pi, a coding agent that publicly rejected the Model Context Protocol for a year, shipped version 0.99.0 on September 29, 2026 with MCP as a core feature. Instead of preloading tool schemas, Pi uses Codemode: the model writes JavaScript in a QuickJS sandbox and only the final result returns to context.
- Pi 0.99.0 shipped September 29, 2026 with MCP support
- Codemode runs code in a QuickJS sandbox inside the harness
- Problem: 3 MCP servers consumed 143,000 of a 200,000-token context
- MCP has 17,000+ public servers and hundreds of millions of monthly SDK downloads
Read next
Software