Headless Customer Support API

Build with cStar

The headless support platform for teams who want to ship their own UI. We run the backend. You render whatever you want. SDKs, webhooks, a CLI, and a REST API that doesn't try to be cute.

2 min to first API call

3 SDKs JS, React, Svelte

$15 per seat, everything

Get Started API Reference

Terminal

Pick your level

Drop in a script tag. Reach for the SDK. Hit the API directly. Start at the level you need — you can mix surfaces later without rebuilding.

Level 1

Widget Embed

2 min · no code

Drop a script tag. Customers get a chat widget; you get tickets in your dashboard. Done.

<script src="cstar.js"></script> Best for landing pages and marketing sites Level 2

SDK Integration

10 min · some code

Import the React, Svelte, or JS SDK. Build custom chat, help centers, and community forums with typed hooks and rune classes.

import { CStarClient } from '@cstar.help/js' Best for custom UIs and SPAs Level 3

REST API

30 min · full control

160+ endpoints across 45 resources. Build a full custom dashboard, sync with your stack, automate anything. Any language.

GET /api/v1/teams/{teamId}/tickets Best for custom dashboards and backend integrations

What are you building?

Support Widget Embed a custom support UI in your app Ticket Sync Sync tickets to your database via webhooks Full Integration Build a complete support experience with SDKs AI Agent Connect cStar to AI tools via MCP server

REST API

Full CRUD for tickets, customers, articles, and webhooks. Clean JSON responses, sensible pagination, proper error codes.

Explore endpoints

Framework SDKs

First-class support for React, Svelte, and vanilla JavaScript. Hooks, rune classes, and real-time subscriptions built in.

View SDKs

Webhooks

Real-time event delivery for tickets, customers, articles, and gamification. HMAC signing, retries, and a CLI for local testing.

Webhook guide

CLI + MCP

Developer CLI for local webhook forwarding, log streaming, and key management. MCP server mode for AI agent integration.

CLI reference

Built different on purpose

MCP

AI-native from day one

MCP server mode lets Claude, Cursor, and other AI tools work with your support data directly.

CLI

Stripe-style webhook testing

cstar listen forwards webhook events to localhost. cstar trigger fires test events.

SDK

Framework-native, not wrappers

React hooks with real-time subscriptions. Svelte 5 rune classes. Not auto-generated REST wrappers.

AI

AI context file included

Drop our AI context file into your project. Your AI assistant instantly knows the full API.

Quick look at the API

REST. Bearer tokens. JSON in, JSON out. No surprises.

GET /api/v1/teams/{teamId}/tickets List tickets

POST /api/v1/teams/{teamId}/tickets Create ticket

GET /api/v1/teams/{teamId}/customers List customers

POST /api/v1/teams/{teamId}/webhooks Create webhook

GET /api/v1/teams/{teamId}/articles List articles

Example: List open tickets

import { CStarClient } from '@cstar.help/js';

const cstar = new CStarClient({ apiKey: 'sk_live_your_key' });

const { data, pagination } = await cstar.tickets.list({
  status: 'open',
  priority: 'urgent'
});

console.log(`Found ${pagination.total} urgent tickets`);

Framework SDKs

Pick the one that matches your stack. React hooks for React. Svelte 5 rune classes for Svelte. The vanilla JS client for everything else (and for the server).

JS @cstar.help/js Core client — works everywhere Re @cstar.help/react React hooks + context provider Sv @cstar.help/svelte Svelte 5 rune classes + stores