ferret
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 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
ferret run example.frl -d 'https://example.com/data.json' -o output.csv
Skip the builder — one click puts this in Claude, Cursor, Antigravity and more.
Expect 20–40 minutes in a terminal — or let your AI agent drive it.
mkdir -p ~/.claude/skills/ferret && curl -fsSL https://workflowstacks.com/api/skills/ferret/claude-skill -o ~/.claude/skills/ferret/SKILL.mdOpens the app with this repo with the prompt ready to go — no copy-paste needed.
Ferret is a very large Go project (~138k lines across 1407 code files, plus 308 test files). It is a full software project: use it through its install path rather than reading it end to end. Last commit this month, Apache-2.0 license, has a test suite.
- 1README.mdStart here — what it does and how to install it
- 2AGENTS.mdThe instructions the AI actually follows
- 3go.modDependencies and the commands it exposes
- 4pkg/internal/debugpoint/index.goInside pkg/ — the main logic begins here
Skip the builder — one click puts this in Claude, Cursor, Antigravity and more.
Expect 20–40 minutes in a terminal — or let your AI agent drive it.
mkdir -p ~/.claude/skills/ferret && curl -fsSL https://workflowstacks.com/api/skills/ferret/claude-skill -o ~/.claude/skills/ferret/SKILL.mdOpens the app with this repo with the prompt ready to go — no copy-paste needed.
Are you the creator of this tool? and earn 85% of every sale.
Show it off in your README:
[](https://workflowstacks.com/skills/ferret?utm_source=github&utm_medium=badge)The five fastest-growing open-source AI skills, ranked by GitHub star growth. One email a week, unsubscribe anytime.
Do this with a working workflow
Pages we wrote and tested that put a skill like this to work — importable n8n templates, outcome guides and Claude Desktop configs.
Related skills
More devtools tools founders pair with this one.