# Opptics > Opptics turns product knowledge into guides a sales rep is walked through inside the real product. The API lets an agent write a guide—its brief, moments and steps. It cannot map moments to interface elements; a person does that in the browser extension, and the guide stays a draft until they have. Anything you create through this API is invisible to reps until a human maps it. Say so when you report back to whoever asked you to build it. ## Start here - [Concepts](https://opptics.team/docs?section=concepts): what makes a useful guide. - [Quickstart](https://opptics.team/agents): one POST that creates a complete draft. ## Reference - [Guides](https://opptics.team/agents#reference): create, retrieve, add moments, set the brief, and check mapping. - [Errors](https://opptics.team/docs?section=errors): codes, limits, and retries. - [Webhooks](https://opptics.team/docs?section=lifecycle): guide.ready, guide.published, and step.broken. ## MCP Four tools: create_guide_draft, add_moment, set_brief, check_mapping. Publishing and assigning are not exposed. ## Optional - [Changelog](https://opptics.team/docs?section=changelog) - [llms-full.txt](https://opptics.team/llms-full.txt): the complete contract.