Decode

What it does

Decode is a desktop workspace for developers and product teams working with coding agents on user interfaces. It brings app screens into a spatial canvas so people can review changes across screens together, test visible behavior, and give an agent feedback in context. The workspace can also hold plans made from diagrams, markdown, images, video, and interactive HTML sketches.

Users can embed web pages on the canvas for reference, including product documents, design files, issue trackers, and pull requests. Decode describes sketches as interactive HTML artifacts; multiplayer syncing supports collaborative tools and editors. Its documented workflow is to install Decode Desktop, connect a coding harness to Decode’s MCP server, and follow a tutorial for reviewing an app across screens. The product is intended for people directing agents as they build UIs; the docs do not specify supported desktop operating systems or detail which coding harnesses are compatible.

What it can do

• Preview changes across multiple app screens
• Test visible app behavior
• Give coding agents feedback across screens
• Embed web pages on a spatial canvas
• Create interactive HTML sketches
• Organize plans using diagrams, markdown, images, and video

Before you choose

• The documentation does not identify supported operating systems or system requirements.
• The quick start requires connecting a coding harness to Decode’s MCP server; compatibility details are not available in the official documentation.
• The site says “Get started free,” but the official documentation does not establish whether free access is recurring or disclose paid pricing.

Listed under

• Coding
• Agents
• Design
• Developer tools
• Prototyping
• UI
• Whiteboard

Get started

The quick start then instructs users to connect a coding harness to the MCP server.

1. Download and install Decode Desktop.
2. Connect a coding harness to Decode’s MCP server.
3. Follow the tutorial for reviewing an app across screens.

No paid pricing or billing terms are stated in the official documentation.

We couldn’t find published prices for Decode. See their pricing page ↗

Sources for this overview

Product pages, documentation, and pricing checked 2 Nov 2026. Each source supports part of the overview; availability and prices can change.

• Decode — The whiteboard for agents ↗decode.dev
• Quick Start — Decode Docs ↗decode.dev
• Decode — The whiteboard for agents ↗decode.dev
• Welcome — Decode Docs ↗decode.dev

Company website

decode.dev: product, pricing and policy pages

YC directory mirror

Batch and company name

Social accounts

Accounts the company links, and its posts on X

Human review

Checked by a person

knowledge_base

manual_review

Last checked 2 Nov 2026. Every field keeps its source and date; unknown means we couldn’t confirm it.