modbender oktk - CLI Output Compressor for LLMs
The Problem
When you run commands through an AI assistant, the full output goes into the LLM context:
$ git status
# Returns 60+ lines, ~800 tokens
# Your AI reads ALL of it, you pay for ALL of it
Every token costs money. Verbose outputs waste your context window.
The Solution
oktk sits between your commands and the LLM, compressing outputs intelligently:
┌──────────┐ ┌──────────┐ ┌──────────┐
│ Command │ ──► │ oktk │ ──► │ LLM │
│ (800 tk) │ │ compress │ │ (80 tk) │
└──────────┘ └──────────┘ └──────────┘
│
90% SAVED
When Does It Work?
Automatically when you run supported commands through OpenClaw:
| Command | What oktk does | Savings |
|---|---|---|
git status |
Shows only: branch, ahead/behind, file counts | 90% |
git log |
One line per commit: hash + message + author | 85% |
git diff |
Summary: X files, +Y/-Z lines, file list | 80% |
npm test |
Just: ✅ passed or ❌ failed + count | 98% |
ls -la |
Groups by type, shows sizes, skips details | 83% |
curl |
Status code + key headers + truncated body | 97% |
grep |
Match count + first N matches | 80% |
docker ps |
Container list: name, image, status | 85% |
docker logs |
Last N lines + error count | 90% |
kubectl get pods |
Pod status summary with counts | 85% |
kubectl logs |
Last N lines + error/warning counts | 90% |
| Any command | AI learns patterns automatically (optional) | ~70% |
Concrete Example
Before oktk (800 tokens sent to LLM):
On branch main
Your branch is ahead of 'origin/main' by 3 commits.
(use "git push" to publish your local commits)
Changes not staged for commit:
(use "git add <file>..." to update what will be committed)
(use "git restore <file>..." to discard changes in working directory)
modified: src/components/Button.jsx
modified: src/components/Header.jsx
modified: src/utils/format.js
modified: src/utils/validate.js
modified: package.json
modified: package-lock.json
Untracked files:
(use "git add <file>..." to include in what will be committed)
src/components/Footer.jsx
src/components/Sidebar.jsx
tests/Button.test.js
no changes added to commit (use "git add" and/or "git commit -a")
After oktk (80 tokens sent to LLM):
📍 main
↑ Ahead 3 commits
✏️ Modified: 6
❓ Untracked: 3
Same information. 90% fewer tokens. Same cost savings.
How It Works Technically
- Intercepts command output after execution
- Detects command type (git? npm? ls?)
- Applies specialized filter for that command
- Extracts only essential information
- Caches results (same command = instant, no reprocessing)
Safety First
oktk never breaks your workflow:
Try specialized filter
↓ fails?
Try basic filter
↓ fails?
Return raw output (same as without oktk)
Worst case: You get normal output Best case: 90% token savings
Usage
Global Command (Recommended)
After installation, oktk is available globally:
# Pipe any command through oktk
git status | oktk git status
docker ps | oktk docker ps
kubectl get pods | oktk kubectl get pods
# See your total savings
oktk --stats
# Bypass filter (get raw)
oktk --raw git status
Shell Aliases (Auto-Filter)
Source the aliases file for automatic filtering:
# Add to ~/.zshrc or ~/.bashrc
source ~/.openclaw/workspace/skills/oktk/scripts/oktk-aliases.sh
Then use short aliases:
gst # git status (filtered)
glog # git log (filtered)
dps # docker ps (filtered)
kpods # kubectl get pods (filtered)
# Universal wrapper - filter ANY command
ok git status
ok docker ps -a
ok kubectl describe pod my-pod
OpenClaw Integration
When using OpenClaw's exec tool, pipe outputs through oktk:
# In your prompts, ask OpenClaw to:
git status | oktk git status
docker logs container | oktk docker logs
# Or use the 'ok' wrapper (if aliases sourced):
ok git diff HEAD~5
Note: OpenClaw doesn't have a built-in exec output transformer yet. The recommended approach is:
- Source the aliases file in your shell
- Use
ok <command>wrapper for any command - Or manually pipe:
<command> | oktk <command>
Real Savings Example
After 1 week of normal usage:
📊 Token Savings
━━━━━━━━━━━━━━━━
Commands filtered: 1,247
Tokens saved: 456,789 (78%)
💰 At $0.01/1K tokens = $4.57 saved
Installation
Already included in OpenClaw workspace, or:
clawhub install oktk
Made with ❤️ in Lithuania 🇱🇹