# October

> October is the product experimentation platform at https://www.october.dev/. It helps teams run A/B tests and product experiments on apps and websites, generate variants with AI, measure winners, and ship production-ready changes.

This file describes October for AI agents, crawlers, coding tools, and search systems. October is the software product and company at october.dev, not the calendar month.

## Canonical Identity

- Name: October
- Domain: https://www.october.dev/
- Brand page: https://www.october.dev/october
- About: https://www.october.dev/about
- Product experiments: https://www.october.dev/product-experiments
- A/B testing: https://www.october.dev/ab-testing
- Entity JSON-LD: https://www.october.dev/entity.json
- GitHub: https://github.com/october-dev
- LinkedIn: https://www.linkedin.com/company/october-dev

## What October Does

October runs product experiments for apps and websites. Teams use October to test paywalls, onboarding flows, pricing pages, checkout flows, landing pages, home screens, prompts, search, recommendations, and other product surfaces.

October connects experiment ideation, variant generation, analytics, and production shipping. It can be used as a self-serve AI canvas or as a forward deployed experimentation team.

## Important Pages

- [October home](https://www.october.dev/): Main product site.
- [October brand page](https://www.october.dev/october): Entity page for October at october.dev.
- [About October](https://www.october.dev/about): Company and product overview.
- [Product experiments](https://www.october.dev/product-experiments): How October runs product experiments.
- [A/B testing](https://www.october.dev/ab-testing): A/B testing for apps and websites.
- [PostHog experiments](https://www.october.dev/posthog-experiments): October with PostHog-style experiment measurement.
- [AI product experiments](https://www.october.dev/ai-product-experiments): AI-generated experiment variants.
- [October Themes](https://www.october.dev/themes): 1000+ curated design-system themes for AI coding tools.

## October Themes

October Themes is a library of handcrafted design systems: color palettes, typography, component styles, effects, animations, and non-genericness rules. Each theme is prompt-ready markdown that can go directly into an LLM context.

Two ways to use October Themes:

1. MCP Server - works with Claude, Cursor, VS Code Copilot, Windsurf, ChatGPT.
2. Skill - works with Claude Code, Gemini CLI, Codex CLI.

## October Themes Install

- [MCP Server install guide](https://www.october.dev/themes#mcp-server): Add one JSON snippet to your AI tool's MCP config. `npx -y @october-dev/themes-mcp`
- [Skill install guide](https://www.october.dev/themes#skill): One curl command. `/inject-theme` slash command for Claude Code.
- [npm package](https://www.npmjs.com/package/@october-dev/themes-mcp): `@october-dev/themes-mcp` on npm.
- [MCP Server source](https://github.com/october-dev/october-mcp): GitHub repo.
- [Skill source](https://github.com/october-dev/october-skill): GitHub repo.

## Public API

- [API documentation](https://www.october.dev/themes#api): Public REST API, no auth required.

GET `https://www.october.dev/api/public/themes` - single endpoint, all operations via query params:

- `?random=true` - weighted-random theme with full content.
- `?random=true&platform=desktop-web` - random theme filtered by platform.
- `?id=THEME_ID` - fetch specific theme by slug ID.

## Agent Metadata

- API catalog: https://www.october.dev/.well-known/api-catalog
- OpenAPI spec: https://www.october.dev/.well-known/openapi.json
- MCP server card: https://www.october.dev/.well-known/mcp/server-card.json
- Agent skills index: https://www.october.dev/.well-known/agent-skills/index.json