sqz 0.6.0

Universal context intelligence layer — compresses LLM context across CLI, MCP, browser, and IDE

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Compress LLM context to save tokens and reduce costs

Install · How It Works · Supported Tools · Changelog · Discord

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sqz compresses command output before it reaches your LLM. Single Rust binary, zero config.

The real win is dedup: when the same file gets read 5 times in a session, sqz sends it once and returns a 13-token reference for every repeat.

Without sqz:                    With sqz:

File read #1:  2,000 tokens     File read #1:  ~800 tokens (compressed)
File read #2:  2,000 tokens     File read #2:  ~13 tokens  (dedup ref)
File read #3:  2,000 tokens     File read #3:  ~13 tokens  (dedup ref)
───────────────────────         ───────────────────────
Total:         6,000 tokens     Total:         ~826 tokens (86% saved)

Token Savings

Single-command compression (measured via cargo test -p sqz-engine benchmarks):

Content	Before	After	Saved
Repeated log lines	148	62	58%
Large JSON array	259	142	45%
JSON API response	64	53	17%
Git diff	61	54	12%
Prose/docs	124	121	2%
Stack trace (safe mode)	82	82	0%

Session-level savings (with dedup cache across repeated reads):

Scenario	Without sqz	With sqz	Saved
Same file read 5x	10,000	826	92%
Same JSON response 3x	192	79	59%
Test-fix-test cycle (3 runs)	15,000	5,186	65%

The dedup cache is where the real savings live. Single-command compression ranges from 2-58% depending on content. Repeated reads drop to 13 tokens each.

Install

cargo install sqz-cli

Then:

sqz init

That's it. Shell hooks installed, AI tool hooks configured.

How It Works

sqz installs a PreToolUse hook that intercepts bash commands before your AI tool runs them. The output gets compressed transparently — the AI tool never knows.

Claude → git status → [sqz hook rewrites] → compressed output (85% smaller)

What gets compressed:

• Shell output — git, cargo, npm, docker, kubectl, ls, grep, etc.
• JSON — strips nulls, compact encoding
• Logs — collapses repeated lines
• Test output — shows failures only

What doesn't get compressed:

• Stack traces, error messages, secrets — routed to safe mode (0% compression)
• Your prompts and the AI's responses — controlled by the AI tool, not sqz

Supported Tools

Tool	Integration	Setup
Claude Code	PreToolUse hook (transparent)	sqz init
Cursor	PreToolUse hook (transparent)	sqz init
Windsurf	PreToolUse hook (transparent)	sqz init
Cline	PreToolUse hook (transparent)	sqz init
Gemini CLI	BeforeTool hook (transparent)	sqz init
OpenCode	TypeScript plugin (transparent)	sqz init
VS Code	Extension	Install from Marketplace
JetBrains	Plugin	Install from Marketplace
Chrome	Browser extension	ChatGPT, Claude.ai, Gemini, Grok, Perplexity
Firefox	Browser extension	Same sites

CLI

sqz init              # Install hooks
sqz compress <text>   # Compress (or pipe from stdin)
sqz compact           # Evict stale context to free tokens
sqz gain              # Show daily token savings
sqz stats             # Cumulative report
sqz discover          # Find missed savings
sqz resume            # Re-inject session context after compaction
sqz hook claude       # Process a PreToolUse hook
sqz proxy --port 8080 # API proxy (compresses full request payloads)

Track Your Savings

$ sqz gain
sqz token savings (last 7 days)
──────────────────────────────────────────────────
  04-13 │█████                         │ 2329 saved
  04-14 │                              │ 0 saved
  04-15 │██████████████████████████████│ 12954 saved
  04-16 │████████████                  │ 5532 saved
──────────────────────────────────────────────────
  Total: 1178 compressions, 19214 tokens saved

How Compression Works

1. Per-command formatters — git status → compact summary, cargo test → failures only, docker ps → name/image/status table
2. Structural summaries — code files compressed to imports + function signatures + call graph (~70% reduction). The model sees the architecture, not implementation noise.
3. Dedup cache — SHA-256 content hash, persistent across sessions. Second read = 13-token reference.
4. JSON pipeline — strip nulls → project out debug fields → flatten → collapse arrays → TOON encoding (lossless compact format)
5. Safe mode — stack traces, secrets, migrations detected by entropy analysis and routed through with 0% compression

For the full technical details, see docs/.

Configuration

# ~/.sqz/presets/default.toml
[preset]
name = "default"
version = "1.0"

[compression.condense]
enabled = true
max_repeated_lines = 3

[compression.strip_nulls]
enabled = true

[budget]
warning_threshold = 0.70
default_window_size = 200000

Privacy

• Zero telemetry — no data transmitted, no crash reports
• Fully offline — works in air-gapped environments
• All processing local

Development

git clone https://github.com/ojuschugh1/sqz.git
cd sqz
cargo test --workspace
cargo build --release

License

Elastic License 2.0 (ELv2) — use, fork, modify freely. Two restrictions: no competing hosted service, no removing license notices.

Links

• Benchmark: sqz vs rtk
• Discord
• Changelog