Tokf

tokf is a Rust CLI that sits between your shell and your AI coding assistant. Prefix a command with `tokf run <command>` and it spawns the process, captures stdout and stderr, matches the command against a TOML filter, then hands your model only the signal — the vendor example turns a 1.7 KB `cargo test` dump into 35 bytes. Install its git hooks once and every commit, push and pull runs through the filters automatically, and task runner substitution wraps make, just and mise targets without editing a single task file. The filter library is plain TOML living in `.tokf/filters/`, version-controlled and reviewable like any other repo config. Precedence runs local, then user, then built-in library, first match wins, and `tokf which "cargo test"` tells you which file was picked. Where TOML runs out of road there's a sandboxed Luau escape hatch for numeric math, multi-line lookahead and branching. The pipeline is explicit: skip/keep, replace, dedup, on_success and on_failure. Built-ins are the practical draw — 63 command patterns across cargo, docker, git, gh, go, gradle, kubectl, Next.js, npm, pnpm, prettier, prisma, ruff and vite, all overridable locally. Agents can author filters themselves via `tokf skill install`, which wires a PreToolUse hook into Claude Code and, since v0.2.46, Codex. Recent releases tightened quality control: v0.2.52 rejects nondeterministic filters at publish time, v0.2.53 captures pipelines to surface swallowed exit codes, and v0.2.54 leaves git unrewritten inside linked worktrees. v0.2.50 added unwrapping of local environment wrappers such as `nix develop -c`. Everything is local by default — no telemetry, no phone-home, no account, token stats in local SQLite, works air-gapped. Optional cloud sync stays inert until you run `tokf auth login`. Compared with prompt-compression libraries that rewrite what you send the model, tokf cuts at the source: the original command runs untouched and only noise is removed.