LeanCTX Ships a Rust Binary That Decides What Your Agent Is Allowed to Read

GitHub·medium signal

yvgude/lean-ctx positions itself as a 'context intelligence layer' — one local Rust binary that gates what files an agent reads, persists what it learns, and guards what leaves the machine. The framing is a policy layer between the agent and the filesystem, rather than a memory store bolted on top. For builders, this is the enforcement counterpart to CLAUDE.md's suggestion-based approach: instead of asking the model politely not to read `.env`, the binary refuses to serve it. Single-source and early, but the enforcement-vs-suggestion distinction is the right axis.