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.

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 剪贴板

Format, decode, OCR, and find copied items

0 字节
发送到服务器的
片段内容
100毫秒
面板开启,
每次都如此迅速
无限制
Mac 上的
剪贴板历史记录
¥38
一次性购买
终身使用

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+ 免费 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.

人工智能 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 人工智能 coding sessions without leaving your workflow.

人工智能 Data Generation

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

Programmable 剪贴板

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

你一直想要的
剪贴板

每次复制都会被保存、理解,并在你需要时准备就绪。

🧠
人工智能 生成的标题
代码片段显示代码的功能,而不是语言。“在钥匙串中验证用户并存储会话”——而不是“Swift 函数”。需要 macOS 15.1+ 和 Apple Silicon。在其他 Mac 上退回到纯文本标题。
⚡
智能转换
复制得更聪明。在复制时转换你的剪贴板——去掉 markdown 标记、修正语法、转换代码、清理 URL、格式化 JSON。人工智能 驱动的转换需要 macOS 15.1+ 和 Apple Silicon。本地即时转换在任何支持的 Mac 上都可用。
🍎
Apple 智能
使用 Apple 的基础模型在设备上运行。默认保护隐私——你的剪贴板永远不会离开你的 Mac。Apple 智能需要 macOS 15.1+ 和 Apple Silicon。核心剪贴板功能在 macOS 13+ 上均可使用。
📝
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 智能 instantly generate mock CSV or JSON test data directly on your clipboard.
🔍
搜索一切
在所有片段中进行全文搜索。通过 OCR,截屏可通过其文本内容进行搜索。在 100 毫秒内找到任何东西。
🛡
敏感雷达
API 密钥、信用卡号、私钥、SSN 和 WiFi 凭据会自动被检测并隐藏存储。内容保持锁定——通过 Touch ID 或密码解锁以复制它。
🔍
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.
🗂
智能相册
片段会根据类型和上下文自动分组到相册中——代码、URL、图片等。通过浏览相册立即找到相关的片段。
📱
二维码生成
复制任何 URL、文本或联系人详情,只需点击一次即可生成二维码。无需额外应用即可即时分享。
🖼
截屏重命名
截屏使用 人工智能 自动重命名——不再有“Screenshot 2025-06-18 at 10.34.02”。根据截屏的实际内容查找你的截屏。
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

简单、诚实的价格

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

¥38
一次性购买 · 终身使用 · 包含后续所有更新
Get L2Cache on the Mac App Store

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

From the L2Cache Blog

Technical guides on macOS engineering, SQLite performance, developer security, and on-device 人工智能.

人工智能 Coding Workflows

Tracking Claude Code & Codex CLI Sessions

How agent history, prompt cache ratios, and token analytics supercharge 人工智能 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 人工智能

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 人工智能 runs entirely on-device using Apple 智能. 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 人工智能 features (smart titles, 智能转换) 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.