Developer documentation
Build with jsys
A multi-reseller API for domain registrars. Sell AI-built websites, logos, and bundled products under your own brand — one API key, webhooks, and an MCP server included.
Quickstart
From zero to a fulfilled order in four steps.
- 1Sign in as a reseller OWNER and mint an API key from the API keys page.
- 2Set your brandConfig in Settings so generated sites carry your brand.
- 3Send POST /v1/orders with an Idempotency-Key header.
- 4Receive the order.fulfilled webhook (HMAC-signed) within seconds.
API reference
Everything the api.jsys.com surface exposes.
Orders
Create, fetch, and cancel orders; read the lifecycle timeline.
Website fulfillment
The output contract, editor flow, and sites-speak-MCP.
Products
List sellable products and their per-product metadata schema.
Wallet & self-service
Balance, ledger, and low-balance alert configuration.
Webhooks
Event catalog and HMAC signature verification.
MCP server
Claude / OpenAI client integration over Model Context Protocol.
The playground runs requests against api-sandbox.jsys.com with your test key — the key never leaves your browser.