OpenGyver
create-flow-ai · Coding
OpenGyver is an open-source command line toolkit that packs 47 commands and more than 180 subcommands into one Go binary. It handles the small jobs that keep interrupting your day: converting units and currencies, encoding text, hashing strings, generating passwords, formatting JSON and SQL, validating markup, and even pulling stock quotes or weather data. Run it standalone from a terminal. Or wire it into CI/CD pipelines, shell scripts, and AI agents that need native tools to call.
About OpenGyver
What Is OpenGyver
OpenGyver is a single-binary CLI that bundles dozens of everyday developer utilities under one command. Instead of juggling a dozen small tools, you install it once and reach for subcommands like convert, encode, hash, generate, or validate. It's built in Go. No runtime dependencies, same behavior on Linux, macOS, and Windows.
The project is MIT-licensed and free to use, so there are no tiers, seats, or usage caps to worry about. That also means the code is open for inspection and contributions on GitHub. The main trade-off is support. With an open-source CLI this young, you're relying on documentation and the community rather than a vendor help desk. That's the cost of free.
One limitation worth flagging early is scope. OpenGyver leans hard on piped output and flag-driven commands, so if you want a visual interface, it isn't for you. Some of the heavier conversions, like audio and ebook formats, depend on external binaries such as ffmpeg or Calibre being installed separately, which adds a setup step before those commands will run.
Getting Started
- Install the binary with Homebrew (
brew install create-flow-ai/tap/opengyver), Go (go install), or build it from source. - Run
openGyver --helpto see all 47 commands, thenopenGyver <command> --helpfor a specific one. - Try a quick conversion, like
openGyver convert 100 usd eurfor live currency rates oropenGyver convert 100 cm infor units. - Add
-jto any command when you need structured JSON for scripting. - Drop the command into a shell script or CI/CD step, or register it as a plugin for Claude to expose native tools to an AI agent.
Product Information
A quick look at OpenGyver's pricing, supported platforms, and performance.
Best for
The users, tasks, and scenarios where this tool fits best.
Users
- Developers and DevOps engineers
- Data and QA folks
- AI agent builders
Tasks
- Unit and currency conversion
- Encoding and hashing
- Document and data conversion
- Secret-free generation
Scenarios
- Cleaning up repetitive chores in a CI/CD pipeline, like validating markup before a build ships.
- Shell scripting where a value needs to be fetched, converted, and piped into the next command.
- Quick lookups in a terminal, such as the current Unix epoch or today's weather for a city.
Key features
One Binary, 47 Commands
OpenGyver ships as a single Go binary with no runtime to install. That makes it easy to drop onto a fresh server or a colleague's laptop and get identical results. The 47 commands split into conversion, encoding, hashing, generation, formatting, validation, and lookup groups, with over 180 subcommands covering the details.
Multi-Format Output Modes
Every command supports several output shapes. JSON mode (-j) returns structured objects for scripting, while abbreviated flags give you a single bare value for shell math. Quiet mode suppresses confirmation chatter, which keeps logs clean in automated runs.
Unit and Currency Conversion
The convert command covers 9 categories of units and 38 currencies, blending everyday measurements with live exchange rates, so you can move between miles and kilometers or dollars and euros without leaving the terminal or opening a calculator app. You can ask for 100 cm in or 100 usd eur and get a plain answer, or capture the full input and output pair as JSON when a script needs both.
Encoding, Hashing, and Generation
Need a base64 blob or a SHA-256 digest without opening a browser tab? The encode and hash commands handle that in one line. No browser. No copy-paste. The generate family adds passwords with a target length, random UUID v4 values, and fake test data for people and other entities, all from the terminal.
File Conversion and Formatting
OpenGyver converts documents and spreadsheets across CSV, XLSX, Markdown, HTML, DOCX, PDF, and postscript, and reaches further with audio formats through ffmpeg, ebooks through Calibre, and CAD files. A separate format command beautifies JSON and SQL so you can read them quickly.
Built for Scripts and AI Agents
The tool is designed to be piped and chained, and it also plugs into Claude as a plugin that exposes 16 native MCP tools. That combination lets a shell script or an AI agent call encoding, hashing, and conversion without leaving its workflow. Install once, use everywhere.
Pros and cons
Pros
- Free and MIT-licensed, with no pricing tiers or usage limits to track.
- Single Go binary with zero dependencies means consistent behavior across Linux, macOS, and Windows.
- JSON and abbreviated output modes make it easy to pipe results straight into scripts.
- Broad coverage of everyday chores, from unit conversion to QR codes, saves installing many small tools.
- Claude plugin exposes the utilities as native MCP tools for agent workflows.
Cons
- No graphical interface, so it's terminal-only and not aimed at non-technical users.
- Some conversions depend on external binaries like ffmpeg or Calibre being installed first.
- As a young open-source project, support comes from docs and the community rather than a vendor.
Frequently asked questions
OpenGyver is a command line toolkit for everyday developer chores. It groups conversions, encoding, hashing, generation, formatting, validation, and small lookups into one binary, so you don't need a separate tool for each job.
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