48CTX

Your AGENTS.md loads on EVERY turn. We make it 30-50% leaner — saving tokens, money, and context window.

How it works

Works with AGENTS.md, CLAUDE.md, .cursorrules, SOUL.md, system prompts

Average optimization: 35% token reduction

How It Works

1

Paste or Describe

Paste any instruction file: AGENTS.md, CLAUDE.md, .cursorrules, SOUL.md, or custom system prompts. Or describe a new agent and let us generate it.

2

Smart Analysis

Our two-pass compiler analyzes each statement's intent, then applies type-specific optimizations. Prohibitions get CAPS. Labels get stripped. Filler gets removed.

3

Export and Save

Download the optimized file for any system. See exactly how much context you're saving on every model. Your agents run leaner, every turn.

Why This Matters

Your instruction files load on EVERY turn. A typical developer sends 50-100 messages per day. The savings compound:

Per Turn

500-3,000 tokens

saved per optimization

Per Day

25K-150K tokens

at 50 turns/day

Per Month

750K-4.5M tokens

freed for actual work

Your savings depend on model, usage, and agent count — the calculator shows your real numbers.

Unlock Local LLMs

Most local models cap at 8-32K context. Your instruction files alone can hit 12K+. 48CTX Pro compresses them to fit — so you can run agents on Ollama, LM Studio, and local hardware. No API costs. Full privacy.

Choose Your Plan

Start free. Go Pro when you need deeper optimization.

Example: 3,200 token file

Free compile:3,200 → 2,300 (28% saved)
Pro rewrite:3,200 → 1,650 (48% saved)

Free

No account needed

$0
  • +Pattern-based compilation (runs in your browser)
  • +Typical savings: 25-35%
  • +Context Budget dashboard (15 models)
  • +Creator — generate agent files (bring your own key)
  • +Local storage only
Pro

Pro

Email signup

$9/month
  • +Everything in Free
  • +Deep LLM rewriting — typical savings: 40-50%
  • +Cloud storage + version history
  • +API access — agents call it directly
  • +Creator with hosted LLM — no API key needed
  • +Cross-system conversion (Cursor ↔ Claude Code)
FreePro
Price$0$9/month
CompilationPattern-based (browser)Deep LLM rewrite
AccountNone neededEmail signup
Typical Savings25-35%40-50%
StorageLocal onlyCloud + versioning
API Access
CreatorBring your own keyHosted LLM
Limited Beta

Try Free. Post Results. Win Pro.

We're giving 50 Pro keys to people who share their results:

  1. 1. Paste your AGENTS.md above
  2. 2. Screenshot your token savings
  3. 3. Post on Twitter with #48CTX
  4. 4. We DM winners a Pro key
Share on Twitter

Follow @48nauts for winner announcements

48CTX beta · Part of the 48nauts ecosystem

GitHub·Twitter·(C) 2026 48Nauts.com