title: "AI Token Optimizer — Cuts Costs, Sharpens Focus, Blocks Prompt Injection" description: "Cuts AI tool costs 40–80% and guards against prompt injection. Stops re-reads, extracts one function vs. whole file, shrinks screenshots 97%." image: /token-goat/assets/goat-social.png permalink: /

Token-Goat

Give the model what it needs, not everything you have.

85% smaller reads · 49% of first-read bytes withheld · 97.4% image compression · leaner prompt cache · 205+ filter & interception rules · 94–99% skill overhead cut · compaction memory · prompt injection guard · 3.7 GB never reached the model · 1.1 Gt tokens saved

Reduces AI token use/costs by 40–90%, and improves its focus. Fully automated, always online.

Also defends against prompt injection. Every fetched page, tool result, and extracted document is wrapped in an untrusted-content fence before hitting the model, whether or not it matched an attack pattern, and the scan only decides what the label says. One config line to disable.

Your AI re-reads the same file three times. Every whole-file dump is paid for again on every turn after it. Every compaction causes amnesia. Every build log buries the one line that matters. You pay for all of it. Token-Goat fixes all of it — automatically.

Token-Goat sits silently between your AI and your tools. Re-read a file? It gets a one-line hint and a narrow-slice suggestion instead of the full file again. Grab a screenshot? A 100 KB copy reaches the model instead of 10 MB. Run pytest, npm install, docker build, or cargo? The thousands of progress bars and passing-test names are stripped to the failures before the output even reaches the context window. Open a PDF, a large Markdown doc, or a CSV? The hook intercepts it — heading tree, page count, or column preview — so the model never pays for the full file. Run gh run watch or next dev a second time? Prior output is recalled rather than re-run. Compact a long session? It gets a clean structured manifest of edited files and key symbols so nothing important is forgotten. Sessions drop 40–90%+ in cost. You change nothing about how you work.

The symbol index also understands native Nginx, Caddyfile, and Apache HTTP Server configuration blocks, so token-goat read "file::symbol" can jump directly to them.

Works with Claude Code, Gemini CLI, Qwen Code, Codex CLI, Aider, Cursor, Cline, Windsurf, Copilot CLI, VS Code (Copilot agent), Visual Studio (Copilot agent, MCP tools and instructions only), Zed (MCP tools only), Kimi Code, Grok CLI (xAI Grok Build), Antigravity CLI (agy), and OpenCode, plus pi (pi-coding-agent).

Ask your AI to install it fully (give it this GitHub link), or install in one command:

npm install -g token-goat && token-goat install

Restart your AI sessions. Run token-goat stats a couple of minutes after your next session to see the massive savings. It also doubles as a great tracker of your work. Welcome to token efficiency.

Built and continually improved, free, by one person. If it saves you tokens, drop a ⭐️ at the top of this page. One click. Makes my day. Also, if you'd like anything added, drop me a line.