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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. Blocks can read live data (Stripe, Postgres, webhooks, any third-party MCP server), be edited end-to-end by your coding agent over MCP, and refresh themselves on a schedule. Connecting your coding agent over MCP is free on every plan. Data sources, BYOK, AI generation, scheduled runs, and stores are Builder beta features.

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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.

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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.

Connectors

Builder beta live data sources: Stripe, Postgres (read-only), inbound webhooks, and any outbound MCP server. Per-workspace AES-256-GCM credential storage.

Scheduled runs

Builder beta cron-driven agent loops, with access to your workspace’s MCP tools. Anthropic and OpenAI routes — bring your own key.

MCP server

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

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What’s next

Quickstart

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

Concepts

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