devtools

Ferret

Declarative data automation language and Go runtime for structured extraction workflows.
6,010 stars323 forksGoUpdated 9/7/2026100% free · open source
What it does

Ferret is a declarative data automation language and Go runtime that enables structured extraction workflows, allowing you to define and execute data extraction tasks in a straightforward and efficient manner.

When to use it
  • When you need to extract specific data from various sources in a standardized and repeatable way
  • When your data extraction tasks involve complex workflows that require conditional logic and data transformations
  • When you want to automate data extraction tasks using a declarative language that is easy to read and maintain
Ready-to-paste prompt
ferret run example.frl -d 'https://example.com/data.json' -o output.csv
Heads up: Ferret requires Go (version 1.16 or later) to be installed on your system, and you need to have the ferret binary in your system's PATH
Saves to your device
Use with Claude
New

Skip the builder — one click puts this in Claude, Cursor, Antigravity and more.

✅ Light setup

Installs with a command or two; your AI agent can do it for you.

Try it instantly — no install
Claude Code
mkdir -p ~/.claude/skills/ferret && curl -fsSL https://workflowstacks.com/api/skills/ferret/claude-skill -o ~/.claude/skills/ferret/SKILL.md
Open in another AI app

Opens the app with this repo with the prompt ready to go — no copy-paste needed.

Connect the whole catalog (MCP)
claude mcp add --transport http workflowstacks https://workflowstacks.com/api/mcp

Adds a WorkflowStacks connector to Claude Code: search and load any skill here by chatting.

Quick Actions
Details
Creator
MontFerret
Language
Go
Category
devtools
Published
8/23/2018

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