ckanthony/Chisel

MCP Developer Tools

Reduce context usage on file use. Send only unified diffs instead of full files (up to 20-100× fewer tokens), and read large files with targeted `grep`/`sed` instead of full reads (up to 500×). Kernel-enforced path confinement hard-locks the agent to a configured root: no accidental reads or writes outside scope. Standalone for your file access or embed in any MCP server (Rust, Node.js, Python via WASM).

Track releases GitHub

Rust Latest v0.1.7 · 3mo ago Security brief →

Features

Provides Unix‑native file tools with minimal token overhead via diff‑based edits
Offers a fixed whitelist and strict path confinement for safety
Embeddable Rust core (`chisel-core`) usable in Rust, Node.js (WASM), or Python (WASM) MCP servers