Chisle

Chisle is a free plugin that cuts the token usage of AI coding agents in three ways. A terse persona makes the model write in a senior developer voice, favouring fragments over full sentences and reuse over new code, while keeping commit messages and security warnings verbose. An output compressor runs after each tool call and shrinks tool results before the model reads them by stripping terminal colour codes, eliding the middle of long output while keeping error lines, and removing duplicates within a session; it never touches file reads, edits or writes. Context diet rules teach the model to search first and read only the slice of a file it needs. It is for developers who pay for agent usage and want smaller bills without changing their tools. The full set works on Claude Code, Pi and OpenCode, Hermes gets the skills as commands, and generated rulesets for Cursor, Windsurf, Cline, Kiro, Codex, Gemini and Copilot ship in the same install, which detects all eleven agents automatically. A statusline badge shows the characters actually removed. The author publishes benchmark transcripts in the repository, reporting that across 20 live tasks the bill came to 52 percent of a bare model, including the one task where it cost more. Chisle is free and released under the MIT licence, with no paid plan. It installs through npx, Claude Code, curl or PowerShell, has zero dependencies and makes no network or model calls of its own. Each part can be switched off separately, and a single uninstall command reverses everything. It is an independent project, and its site publishes the failures from its benchmarks alongside the wins.