ZeroIndex.

Developer docs for your API, from first request to last release.

ZeroIndex home inside the docs shell, with the sidebar, the add fast, typo tolerant search to your product heading, an agent skill box with Claude, Cursor and Codex logos, and four Start here cards
ZeroIndex home in dark mode, with the graphite sidebar, the search heading, the agent skill box and the four Start here cards
ZeroIndex Introduction guide with the Copy page menu, a tip callout, a cURL, JavaScript and Python code group and the On this page table of contents
ZeroIndex Introduction guide in dark mode, with the sidebar, a tip callout, a code group and the table of contents
ZeroIndex Quickstart guide with numbered steps, a warning callout about admin keys and an npm, pnpm and yarn install code group
ZeroIndex API reference introduction with the endpoint groups in the sidebar, the base URL and the authentication section
ZeroIndex Search endpoint page with the POST method and path, path and body parameters, and the request tabs and JSON response in a sticky column
ZeroIndex SDKs index with JavaScript, Python, Go and Ruby cards, each with its version and install command
ZeroIndex JavaScript SDK page with the package, version and Node.js requirement under the title, an install code group and the client setup
ZeroIndex changelog with five dated releases, each with a version badge, a title, a one line summary and a link to the release notes
ZeroIndex release page for swap indexes without downtime, with the date and version, a code sample, Added and Fixed lists and the previous release card
ZeroIndex status page with a webhook delay notice, services with uptime and state, regions with response times and recent incidents
ZeroIndex status page in dark mode, with services, regions and recent incidents

About ZeroIndex. What it is and how it works.

ZeroIndex is a documentation template for teams shipping an API or SDK, built with Astro and Tailwind CSS. Guides, an API reference with requests and responses side by side, SDK pages, a changelog and a status page, in light and dark.

Pages

Static pages

  • Home
  • Status
  • Error 404

Content collections

  • Docs
  • API Reference
  • SDKs
  • Changelog
What's included
  • API Reference with Request and Response Tabs
  • Docs Shell with Sidebar and Table of Contents
  • Search across Docs, Endpoints and SDKs
  • AI Assistant Panel (UI, ready to connect)
  • Copy Page as Markdown
  • Open Page with ChatGPT
  • Open Page with Claude
  • Markdown Version of Every Page
  • MDX Components without Imports
  • Code Groups with Copy Buttons
  • Page Feedback
  • Status Page
  • Light and Dark Mode
  • Previous and Next Pagination
  • Lenis Smooth Scroll
  • Content Collections
  • Reusable Components
  • SEO Optimized
  • Style Guide
  • Astro SEO
  • Astro Sitemap
  • Tailwind CSS Forms
  • Tailwind Typography
  • GitHub Access
  • AGENTS.md
  • SKILLS.md
  • Cursor rules
  • Lifetime access
  • Lifetime updates
  • Lifetime support
Details

Versions

  • Astro v7.3.5
  • Tailwind v4.1.18
  • Released 06.25
  • Redesign 10.26
  • Updated 10.26

Lighthouse

  • Performance 100
  • Accessibility 100
  • Best Practices 100
  • SEO 100

Tech stack

Inside ZeroIndex. Pages, features and the stack.

See changelog

ZeroIndex: developer docs for your API, from first request to last release

ZeroIndex is a documentation template for teams shipping an API or SDK. A warm ground, a white panel that scrolls on its own, the sidebar on the left and the table of contents on the right: calm, fast to scan, and every page there because a developer needs it.

Why ZeroIndex

  • An API reference with one page per endpoint: method and path, parameters, and request tabs (cURL, JavaScript, Python) beside the response
  • Guides grouped as Getting started, Concepts and Guides, written in MDX with callouts, cards, code groups, tabs, steps, accordions, fields, images and video, no imports needed
  • SDK pages with package, version, requirements and install in the header, a changelog with dated releases, and a status page with services, regions and incidents
  • Search with ⌘K across docs, endpoints, SDKs and releases
  • An AI assistant panel opened from the sidebar, any code block or ⌘I, built as UI with events ready for your provider
  • Copy page as Markdown, open it in ChatGPT or Claude, and a .md version of every page for AI tools
  • “Was this page helpful?” feedback, previous and next with descriptions, and a sliding table of contents
  • Light and dark mode, Lenis smooth scroll and SEO-ready with Astro SEO and Sitemap

Layout & Structure

Docs, the API reference and SDKs are content collections, so a new page is one MDX file. The home page lives inside the same shell, so readers are one click from any guide.

Colour, your way

Ten tokens, each with a light and a dark value: the ground, the panel, graphite ink, two greys, an ultramarine accent and four state colours. Change one file and the whole site follows.

ZeroIndex is also available with Sanity CMS (Sanity Studio + monorepo) or EmDash CMS (built-in admin, Cloudflare deploy) for teams who want a visual editor without giving up Astro performance.

One-time license: every project you ship

Buy once. Use forever. No subscriptions. No renewals.

Docs your developers will actually read.

Every theme, for life. One payment, future releases included.

Need the full toolkit? Studio and Agency add the Remotion templates, Morrisson and Lexington MCP.

Personal

1 seat
$99 /$198

One-time payment, plus applicable taxes.

All the themes, for solo builders.

  • All 51 Astro themes
  • All 50 Sanity CMS themes
  • All 50 EmDash CMS themes
  • Commercial license
  • GitHub repository access
  • AGENTS, SKILLS and RULES
  • Use in unlimited projects
  • New theme drops
  • Ongoing updates
  • Email support
  • Astro
  • Sanity
  • EmDash

Team

10 seats
$299 /$598

One-time payment, plus applicable taxes.

All the themes, for the whole team.

  • All 51 Astro themes
  • All 50 Sanity CMS themes
  • All 50 EmDash CMS themes
  • Commercial license
  • GitHub repository access
  • AGENTS, SKILLS and RULES
  • Use in unlimited projects
  • New theme drops
  • Ongoing updates
  • Email support
  • Astro
  • Sanity
  • EmDash

Secure payments via Polar.sh

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Photo of Alberto Barredo

Thanks to Michael adapting Enlightr to Sanity CMS, I was able to create Madrid Landing Kit. I’m amazed by the simplicity and beauty of every Lexington theme.

Alberto Barredo

Founder, Madrid Landing Kit

9,000+

freelancers, startups, and agencies