What is Codemode lucumr.pocoo.org Wildcard

Pi creator Armin Ronacher explains Codemode, a new Pi 1.0 feature that lets AI agents use sandboxed JavaScript in the trusted harness to compose tool calls, run workflows, and access model APIs without sending every step through the model’s context. He says it complements CLI tools and enables MCP use, but MCP support remains uneven because servers often lack structured, consistent results and adequate support for binary data and tool discovery.