Build on Sunny

A hosted MCP server for agents, a REST API, an OAuth 2.1 authorization server, a neutral layout format, embeddable widgets, and webhooks. Everything here is live today.

For endpoint parameters and request examples, open the /v1 API reference (beta), or the unversioned reference for the broader app surface. The guides below explain how to connect and build an integration.

MCP serverConnect any MCP-capable agent, and what each tool can read and write.

REST APIThe OpenAPI specs and browsable references, with OAuth or API keys.

OAuth & scopesDiscovery endpoints, registering a client, what each scope grants, and rate limits.

Layout formatsunny-layout: the JSON document for one space's arrangement, and how to move it in and out.

EmbedsPut Sunny in an iframe: the postMessage protocol, embed.js, and tokenized item and typical embeds.

WebhooksSigned event deliveries for orders, quotes, and more: the events, verifying signatures, retries.

Inbound webhook URLsSend order files from your own systems to a workspace's webhook URL.