Paper

Paper is a shared, web-standards canvas that keeps interface design, agents and code in one workspace. It is best for teams that want AI involved in creating and refining responsive interfaces instead of stopping at a design handoff. The free collaboration allowance is unusually broad, while import compatibility, agent quotas and data restrictions may determine whether it fits a particular organization.

Overview

Paper’s central proposition is continuity: teams work on an HTML/CSS canvas, agents can operate on that canvas, and the result can move into code and back. That makes it more relevant to product teams shipping interfaces than to designers seeking an isolated mockup tool. Paper is made by Lost Coast Labs, Inc., doing business as Paper.

Key features

The canvas exports designs as code and supports an ongoing workflow between Paper and the implementation. This two-way path can keep visual changes and code work closer together, although its value depends on whether your team wants to work in a web-standards-oriented environment.

Paper agents can read and write files to build responsive layouts, try style variations and perform consistency checks. Paper MCP adds agent actions for generating layouts, bringing in real content and converting selected frames into code. Setup paths cover Claude, Codex, Cursor, OpenCode, Antigravity, GitHub Copilot, VS Code and other agents, giving teams already invested in those tools several integration routes.

Snapshot copies web components directly into Paper as editable layers, which is useful when an existing web interface is the starting point. Figma selections can also be copied as editable layers, but components, variables, masks and rich text are not fully supported. Figma-heavy teams should therefore treat the import as a partial transfer rather than a complete migration.

Prompt-to-UI generation, design-system support and responsive layouts round out the workflow. These capabilities reinforce Paper’s agent focus, but image generation and MCP usage are explicitly metered on the lower plan.

Pricing

Paper uses a freemium model. The Free plan costs free and permits unlimited viewers and editors, 100 MCP tool calls per week, limited image generation and a 25 MB maximum image size. That combination is well suited to teams that need broad collaboration and occasional agent work without a subscription; the weekly MCP allowance can become a hard ceiling for agent-heavy workflows.

Pro is shown as $2,016 a month, billed yearly with 20% savings, and is the paid entry point described as $16/user/mo on an annual term. It raises MCP capacity to 1M tool calls per week, provides 100 times more image generation per week, adds video export, raises the maximum image size to 100 MB and includes priority feedback. Viewer seats remain free on paid plans, so this tier makes most sense when active editors need substantially more agent and media capacity.

Organizations has custom pricing and includes everything in Pro plus SAML/SSO, admin controls, custom contracts, dedicated support and priority onboarding. It is the appropriate tier for organizations that need centralized identity and administration rather than simply higher quotas. Paper provides FAQ and troubleshooting documentation generally; dedicated support is reserved for Organizations.

Platforms

Paper runs on the web and has an extension, with support for Linux, macOS and Windows. That spread suits mixed-device teams and workflows that need a browser-based canvas alongside desktop environments.

Who it's for

Choose Paper if your team wants agents to participate directly in layout, content and code work, and if unlimited free editor and viewer access matters. It is especially compelling for teams already using one of its MCP-connected agents and for projects built around responsive, systematized interfaces.

Look elsewhere if your process depends on fully faithful Figma transfer, particularly components, variables, masks or rich text. Organizations handling regulated or sensitive information also need a careful fit check: Paper’s DPA bars customer content containing HIPAA health data, financial information, government identifiers and children’s data. Paper is headquartered in the United States and may transfer personal information to the United States or other countries.

Pros and cons

Pro: A canvas-to-code-and-back workflow reduces the distance between visual design and implementation.

Pro: Agents can edit the canvas, generate layouts, use real content and produce code through MCP.

Pro: Free plans allow unlimited editors and viewers, and viewer seats stay free on paid plans.

Con: Figma imports do not fully support components, variables, masks or rich text.

Con: The Free plan limits MCP calls to 100 per week, limits image generation and caps images at 25 MB.

Con: Customer content must exclude several sensitive data categories, and international transfers may occur.

Alternatives

AI UI Design Generators is the broader category to browse when you want to compare agent-assisted interface tools.

Pick UXPin instead if you need a freemium option spanning Android, iOS, macOS, web and Windows, with a 14-day trial and a limited post-trial plan offering two prototypes and 50 AI credits.

Figma Make is an alternative for teams already centered on Figma and its AI-credit plans.

Choose Relume for a web-focused builder whose free tier includes one project, one page, read-only sharing and capped Webflow and React component libraries.

Starry is another cross-platform freemium option.

Consider pen.dev if a free, API-and-extension-oriented workflow with agent-day and generation quotas is a better match.

EaseUI offers a web-only free tier and a one-time Premium purchase.

Marmo UI is a freemium web option with a free core and MCP features.

Coherent is a free, desktop-oriented open-source alternative.

Verdict

Paper is a strong choice for interface teams that want a shared canvas where agents can shape responsive designs and export working code, especially with unlimited free collaboration. Choose Pro when MCP and image quotas are central to daily work, or Organizations when identity controls and dedicated support are required. Look elsewhere if complete Figma fidelity or unrestricted handling of sensitive customer data is more important than an agent-connected design-to-code workflow.