The Developer Memory Layer
Built for Mac

Search clipboard history, shell commands, OCR screenshots, Claude Code and Codex sessions—100% locally. Format JSON, decode JWTs, and scrub sensitive secrets with private on-device intelligence.

Download for Mac See features
One native Mac app

Keep the useful parts of your work searchable

Find the command, coding session, or copied snippet you remember without losing the clipboard tools developers already use L2Cache for.

Mac Command History

View and search terminal commands

 Claude Code History

Find previous coding sessions

 Codex History

Search past Codex CLI sessions

 Developer Clipboard

Format, decode, OCR, and find copied items
0 bytes
of clip content
sent to any server
100ms
panel opens,
every time
Unlimited
clipboard history
on your Mac
$4.99
one-time purchase
pay once, own forever
Developer Tools

Built for code.
Not just text.

L2Cache doesn't just store strings. It understands code, extracts errors, and connects context. Scroll through to see each tool in action.

Read the Developer Guide Explore 66+ Free In-Browser Tools (Fancy QR, Mermaid, Session Viewer) →

Decode JWTs & Format JSON

Click any raw JWT or minified JSON to instantly decode and format it on-device. No more pasting into random browser tabs.

OCR for Stack Traces

Someone sent a screenshot of an error? Copy it. L2Cache extracts the text instantly using Apple's Vision framework.

Terminal History

L2Cache detects terminal output and automatically extracts the root command (like docker, git, or npm) to tag your clips, making it easy to filter, find, and replay your past commands.

AI Agent Session History

Every Claude Code and Codex CLI session is captured in your clipboard history — prompts, responses, token usage, and cache hit rates. Review, search, and replay your AI coding sessions without leaving your workflow.

AI Data Generation

Select a SQL schema or Swift struct and run an AI prompt directly inside the clipboard to generate mock data instantly.

Programmable Clipboard

View Recipes →

L2Cache lets you create custom actions in Bash or Ruby. Target actions dynamically based on content types like SQL, Docker, YAML, or GraphQL. Format, fetch, or filter copied text entirely on-device.

From Raw Data to Usable Code

Ordinary clipboards merely store raw data like unprocessed ore. L2Cache works as a miner, instantly refining that material into polished, ready‑to‑use gold.

Standard Clipboards
eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c
L2Cache
{ "header" : { "alg" : "HS256", "typ" : "JWT" }, "payload" : { "iat" : 1516239022, "name" : "John Doe", "sub" : "1234567890" }, "signature" : "SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c", "verified" : false }
Features

The clipboard
you always wanted

Every copy saved, understood, and ready when you need it.

🧠
AI-generated titles
Code clips show what the code does, not what language it's in. "Authenticate user and store session in Keychain" — not "Swift function".Requires macOS 15.1+ and Apple Silicon. Falls back to plain-text titles on other Macs.
⚡
Smart Transform
Copy smarter. Transform your clipboard as you copy — strip markdown fences, fix grammar, convert code, clean URLs, format JSON.AI-powered transforms require macOS 15.1+ and Apple Silicon. Local instant transforms work on any supported Mac.
🍎
Apple Intelligence
Runs on-device using Apple's foundation model. Private by default — your clipboard never leaves your Mac.Apple Intelligence requires macOS 15.1+ and Apple Silicon. Core clipboard features work on macOS 13+ regardless.
📝
Screenshot OCR
Instantly extract and copy text from any screenshot or image using on-device optical character recognition.
🛠
SQL Mock Data Gen
Copy a SQL schema and let Apple Intelligence instantly generate mock CSV or JSON test data directly on your clipboard.
🔍
Search everything
Full-text search across all clips. Screenshots are searchable by their text content via OCR. Find anything in under 100ms.
🛡
Sensitive radar
API keys, credit card numbers, private keys, SSNs, and WiFi credentials are automatically detected and stored as hidden. Content stays locked — unlock with Touch ID or your password to copy it.
🔍
Regex pattern matching
Type standard Regular Expressions to filter your massive clipboard history natively. Instantly find AWS keys, IP addresses, or UUIDs using terminal grep-like syntax.
🗂
Smart albums
Clips are automatically grouped into albums by type and context — code, URLs, images, and more. Browse by album to find related clips instantly.
📱
QR code generation
Copy any URL, text, or contact detail and generate a QR code in one click. Share instantly without any extra app.
🖼
Screenshot renaming
Screenshots are automatically renamed using AI — no more "Screenshot 2025-06-18 at 10.34.02". Find your screenshots by what's actually in them.
Wall of Love

Developers love L2Cache

Don't just take our word for it. Here is what engineers are saying.

★★★★★

"This is hands down the best clipboard manager for engineers. The ability to pipe my clipboard directly into a Ruby script without leaving my IDE is mind-blowing. It replaced Maccy for me."

S

Sarah J.

Senior Backend Engineer

★★★★★

"The Smart Actions are a game changer. Being able to extract a JWT payload or pretty-print JSON with a single shortcut saves me so much context switching every day."

M

Michael T.

Fullstack Developer

★★★★★

"Finally, a native macOS app that respects developers. It's incredibly fast, the SQLite search is instant, and the UI is absolutely gorgeous. Worth every penny."

D

David R.

iOS Engineer

Pricing

Simple, honest pricing

No subscriptions. No recurring fees. Pay once, own forever — all future updates included.

$4.99
one-time purchase · lifetime access · all future updates included
Get L2Cache on the Mac App Store

macOS 13 Ventura or later · Universal Binary (Apple Silicon & Intel) · Pay once, own forever

Engineering Deep Dives

From the L2Cache Blog

Technical guides on macOS engineering, SQLite performance, developer security, and on-device AI.

AI Coding Workflows

Tracking Claude Code & Codex CLI Sessions

How agent history, prompt cache ratios, and token analytics supercharge AI development.

Read Article →
Database Architecture

Preventing SQLite FTS5 Hangs on Large Datasets

How we achieved sub-millisecond search across 100k+ clipboard entries using SQLite triggers.

Read Article →
Security & Privacy

Why Developer Tooling Needs On-Device AI

Why sending clipboard history to cloud LLMs risks leaking API keys, secrets, and auth tokens.

Read Article →
Developer Security

Why Pasting JWTs Online is a Security Risk

Why developers should decode and validate JSON Web Tokens offline on macOS.

Read Article →
Explore All Engineering Articles & Guides →
FAQ

Common Questions

How much does L2Cache cost? +
L2Cache is a $4.99 one-time purchase with lifetime access. Pay once, own forever — all future updates are included with no recurring subscriptions.
Does L2Cache keep my clipboard history private? +
Yes. L2Cache stores your clipboard history locally on your Mac and its AI runs entirely on-device using Apple Intelligence. No clipboard content is ever sent to any server.
What Macs does L2Cache work on? +
L2Cache runs on macOS 13 Ventura or later. Core clipboard history and search work on any supported Mac; the on-device AI features (smart titles, Smart Transform) require macOS 15.1+ on Apple Silicon.
How is L2Cache different from the built-in macOS clipboard? +
macOS only keeps the last copied item. L2Cache keeps unlimited history with full-text search, OCR search inside screenshots, smart albums, regex grep, JWT/JSON decoding, SQL data generation, custom scripts — and works back to macOS 13.