voiden: API design in Markdown
From the repo · “Design, Test and Document APIs in plain Markdown. Compose Requests with API blocks. Reuse, Replace & Version everything just like code. Offline, Truly Git Native, No Lock-in.”
Design REST APIs and GraphQL queries using Markdown to test and document your API.
"A founder, Emma, wanted to build an API endpoint for her e-commerce website to send a confirmation email to customers after checkout. She used voiden to compose the API request and then exported it as code to integrate it with her Stripe payments system. It took her about 30 minutes and she was able to see the result immediately."
- •When you need to create API documentation that's easy to maintain and update
- •When you want to test and iterate on API designs without writing code
- •When you need to collaborate with team members on API development and documentation
Create a new API request using `### Request | POST | /users | {"name": "John Doe", "email": "john@example.com"}`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/voiden && curl -fsSL https://workflowstacks.com/api/skills/voiden/claude-skill -o ~/.claude/skills/voiden/SKILL.mdOpens the app with this repo with the prompt ready to go — no copy-paste needed.
Voiden: API design in Markdown is a very large TypeScript project (~119k lines across 556 code files, plus 1 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
- 2package.jsonDependencies and the commands it exposes
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/voiden && curl -fsSL https://workflowstacks.com/api/skills/voiden/claude-skill -o ~/.claude/skills/voiden/SKILL.mdOpens the app with this repo with the prompt ready to go — no copy-paste needed.
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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.
Abandoned Cart Win-Back
Draft a personalized, non-pushy win-back email for every abandoned cart — referencing the exact product left behind. You approve before sending.
Outcome guideTurn meeting notes into a summary email automatically
Paste the transcript into a private form and the workflow writes and emails a concise recap — decisions, owners, open questions — that people will actually read.
MCP configPlaywright (browser) MCP config
Drive a real browser for testing and automation from Claude.
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