# Cowliss > Cowliss is a dev-facing customer data platform: send identify and track from your apps, compute segments on write, and run durable per-user automations, written as JSON definitions, that send email and webhooks. This is the marketing site; the documentation is at https://docs.cowliss.com, where every page is also markdown (append `index.md` to its URL). ## This site - [Home](https://cowliss.com/): what Cowliss does, in three steps - [Compare](https://cowliss.com/compare): Cowliss next to Klaviyo, Mailchimp, Customer.io, Brevo and Resend, the price at any contact count and feature by feature (markdown: https://cowliss.com/compare/index.md) - [Pricing](https://cowliss.com/pricing): Free and Plus, both with usage included every month and every feature, plus a prepaid wallet past it (markdown: https://cowliss.com/pricing/index.md) - [Privacy](https://cowliss.com/privacy): the privacy policy - [Terms](https://cowliss.com/terms): the terms of service ## Documentation - [Docs site map](https://docs.cowliss.com/llms.txt): every documentation page, with descriptions - [Full documentation in one file](https://docs.cowliss.com/llms-full.txt): the entire docs site inline - [OpenAPI 3.1 document](https://docs.cowliss.com/openapi.json): every endpoint of the HTTP API - [Automation JSON Schema](https://docs.cowliss.com/schemas/automation.json): what an automation definition holds - [Quickstart](https://docs.cowliss.com/quickstart/index.md): from nothing to an automation that sends a real email - [For agents: CLI and MCP](https://docs.cowliss.com/guides/agents/index.md): the MCP server URL and how each client connects