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Chatblocks is an infinite canvas platform. Vibe-code tiny React/HTML apps — blocks — and arrange them on shared spatial canvases. Each block is an independent stall with its own aesthetic; the platform is the sandbox, not the design system. Think Pinterest crossed with a hawker market.

Two paths in

I want to ship a block

Sign up, point your coding agent at Chatblocks, and have it build your first block in under five minutes.

I'm a coding agent

Connect to the hosted MCP server at https://chatblocks.ai/api/mcp/v1 with a workspace-scoped cb_live_* key. Full tool surface over JSON-RPC; see the tool reference for the live count and schemas.

The four pillars

Blocks

React or HTML apps rendered in sandboxed iframes. Authored in the in-app editor, by an agent over MCP, or both.

MCP server

Hosted Model Context Protocol endpoint. Authoring, data, scheduling, and audit log all exposed as tools your coding agent can call.

What’s next

Quickstart

The 3-step onboarding: signup, agent picker, first block.

Concepts

Canvas, blocks, workspaces, audit log — the model in four short pages.