# ThinnestAI

> One AI agent that answers on your website, WhatsApp and Telegram — and remembers the same customer across all of them.

- [Introduction](https://docs.thinnest.ai/introduction.md): One agent, answering on your website, WhatsApp and Telegram — from your own material.
- [Quickstart](https://docs.thinnest.ai/quickstart.md): An agent answering on your website, from your own pages, in about ten minutes.
- [How the pieces fit](https://docs.thinnest.ai/concepts.md): Workspace, agent, channel, contact — and which one owns what.
- [Knowledge](https://docs.thinnest.ai/agent/knowledge.md): What the agent answers from, and what it will refuse to guess at.
- [Behaviour](https://docs.thinnest.ai/agent/behaviour.md): Tone, language, opening line, model and when to fetch a human.
- [Leads and contacts](https://docs.thinnest.ai/agent/leads.md): Ending the conversation with somebody to call, not just a closed ticket.
- [Actions](https://docs.thinnest.ai/agent/actions.md): Letting the agent do things, not only say them — safely.
- [Calendar](https://docs.thinnest.ai/agent/calendar.md): Your agent reads your real availability and books meetings into your Cal.com.
- [Spreadsheet](https://docs.thinnest.ai/agent/spreadsheet.md): Your agent writes what it learns into your spreadsheet while it is still talking, and can look things up in it.
- [Call your own API](https://docs.thinnest.ai/agent/custom-api.md): Give the agent one narrow endpoint of yours, and every rule that keeps it safe.
- [Escalation](https://docs.thinnest.ai/agent/escalation.md): How the agent hands a conversation to a person — including when an action fails.
- [Channels overview](https://docs.thinnest.ai/channels/overview.md): Where customers talk to your agent, and what each channel can carry.
- [Website widget](https://docs.thinnest.ai/channels/website.md): The chat window on your own pages.
- [WhatsApp](https://docs.thinnest.ai/channels/whatsapp.md): The same agent, answering on WhatsApp — plus what Meta's rules mean for you.
- [Telegram](https://docs.thinnest.ai/channels/telegram.md): The quickest channel to connect — no approvals, no templates, no waiting.
- [Voice](https://docs.thinnest.ai/channels/voice.md): Your agent answers the phone — with the same memory of each customer it has everywhere else.
- [Calling campaigns](https://docs.thinnest.ai/channels/voice-campaigns.md): Your agent rings a list and has the conversation itself.
- [Phone numbers](https://docs.thinnest.ai/channels/phone-numbers.md): Get a number your customers ring, or point one you already own at your agent.
- [Shopify](https://docs.thinnest.ai/install/shopify.md): A theme app embed — no code, no paste, and no theme edits to undo.
- [WordPress and WooCommerce](https://docs.thinnest.ai/install/wordpress.md): One file, three steps, and signed-in customers recognised.
- [PrestaShop](https://docs.thinnest.ai/install/prestashop.md): A proper module — survives a theme change, and signs your customers.
- [Wix, Squarespace, Webflow and anything else](https://docs.thinnest.ai/install/other-platforms.md): The script tag, where it goes on each platform, and which ones can recognise a customer.
- [Recognise signed-in customers](https://docs.thinnest.ai/install/signed-in-customers.md): Four lines on your server, and a logged-in customer stops being a stranger.
- [Templates](https://docs.thinnest.ai/whatsapp/templates.md): The only thing that reaches a customer outside the 24-hour window.
- [One-time codes](https://docs.thinnest.ai/whatsapp/one-time-codes.md): OTP over WhatsApp — Meta writes the message, you choose how it behaves.
- [Send a message](https://docs.thinnest.ai/whatsapp/send.md): One approved template, to a handful of numbers, without building a campaign.
- [Broadcasts](https://docs.thinnest.ai/whatsapp/broadcasts.md): One approved template, to everybody who agreed to hear from you.
- [Sequences](https://docs.thinnest.ai/whatsapp/sequences.md): A series of messages triggered by something that happened, not by a date.
- [Meta's rules, in one place](https://docs.thinnest.ai/meta/overview.md): What WhatsApp allows, who decides it, and which limits are ours versus Meta's.
- [Windows and what gets charged](https://docs.thinnest.ai/meta/windows-and-pricing.md): The 24-hour window, the 72-hour free entry point, and why answering costs far less than starting.
- [Template review and approval](https://docs.thinnest.ai/meta/template-review.md): How Meta reviews a template, why they get rejected, and how to fix each cause.
- [Quality ratings and messaging limits](https://docs.thinnest.ai/meta/quality-and-limits.md): How many people you can reach, how to reach more, and how to lose the ability.
- [Business verification](https://docs.thinnest.ai/meta/verification.md): What it unlocks, what it costs you in time, and what stays locked without it.
- [Inbox](https://docs.thinnest.ai/workspace/inbox.md): Every conversation, and how a person takes one over.
- [Helpdesk](https://docs.thinnest.ai/workspace/helpdesk.md): Escalations as tickets in Zendesk or Salesforce, with replies coming back.
- [Analytics](https://docs.thinnest.ai/workspace/analytics.md): Whether the agent did its job — every figure a count you could verify yourself.
- [Usage](https://docs.thinnest.ai/workspace/usage.md): What your agents did, what it cost, and every call you can open and listen to.
- [Guides](https://docs.thinnest.ai/guides/overview.md): Worked, end-to-end tutorials — real code, and the mistakes marked.
- [Cut the "I don't know" answers](https://docs.thinnest.ai/guides/reduce-i-dont-know.md): A weekly loop using the gaps report — the highest-return half hour in the product.
- [Serve customers in their own language](https://docs.thinnest.ai/guides/multilingual.md): One knowledge base, 37 languages — and how templates differ from chat.
- [Make your agent sound right on the phone](https://docs.thinnest.ai/guides/how-your-agent-sounds.md): Why a reply that reads well can sound wrong, and the handful of changes that fix it.
- [Take bookings over the phone](https://docs.thinnest.ai/guides/phone-bookings.md): A clinic line that answers, gathers four details and reads them back — built in about twenty minutes.
- [Answer "where is my order?"](https://docs.thinnest.ai/guides/order-status.md): A worked example: your API, one action, and an agent that stops saying it doesn't know.
- [Recognise signed-in customers on a Next.js site](https://docs.thinnest.ai/guides/nextjs-identity.md): A complete, copy-able implementation — server component, App Router, no secret in the browser.
- [Send your first broadcast](https://docs.thinnest.ai/guides/first-campaign.md): Start to finish, with the mistakes that cost real money marked.
- [Recover abandoned carts](https://docs.thinnest.ai/guides/abandoned-cart.md): An event from your shop, a two-step sequence, and messages that stop when the customer buys.
- [API reference](https://docs.thinnest.ai/api-reference/introduction.md): The transactional API — the messages your systems send, not the ones your marketing does.
- [Authentication](https://docs.thinnest.ai/api-reference/authentication.md): Bearer keys, and the one place they must never go.
- [Send a message](https://docs.thinnest.ai/api-reference/send-message.md): POST /api/v1/messages — one approved template to one customer.
- [Send a one-time code](https://docs.thinnest.ai/api-reference/send-a-code.md): Authentication templates — what Meta writes for you, and the one thing everybody gets wrong.
- [Place a call](https://docs.thinnest.ai/api-reference/place-call.md): POST /api/v1/calls — your agent rings a customer, and says why.
- [Report an event](https://docs.thinnest.ai/api-reference/report-event.md): POST /api/v1/events — tell us something happened, and we decide what to send.
- [Enrol in a sequence](https://docs.thinnest.ai/api-reference/enrol-in-sequence.md): POST /api/v1/sequences/{id}/enrolments — put one person into a sequence, with their own data.
- [Errors](https://docs.thinnest.ai/api-reference/errors.md): What each status means, and whether retrying will help.