Generate a new button variant that matches our existing tokens
ask the agentvs.Knapsack
Looking for amodern alternativeto Knapsack?
Connect Figma and the system is live the same afternoon — engineering joins when it’s useful, not as a prerequisite.
<10 min
to value — connect Figma and Storybook, then ask questions through Supernova Agent or MCP
vs. a Git repo, CI/CD pipeline, and renderer wired up before Knapsack does much
>90%
of day-to-day design-system work automated by Supernova agents
vs. Knapsack’s read-only MCP — every change still goes through Git and a human
>70%
fewer tokens spent on every prompt your team or agent runs
vs. Knapsack’s single, unscoped MCP view for every agent
“All the support we've received since our arrival shows just how much better it is to be here .”
Renato Michalischen
Design System Manager, Userlane
Knapsack customers have spoken
Sourced from G2 and Capterra reviews, and Knapsack’s published pricing and feature pages.
01
Priced in before you’ve tried it
Cost is the complaint reviewers raise most, and there is no trial to test the claim. Plans start at a paid-seat minimum, on an annual contract, quoted by sales.
02
Slow in daily use
Reviewers repeatedly describe the platform as sluggish, and the interface as overwhelming at first. A system people find heavy to open is a system people stop opening.
03
Engineering is the on-ramp
The system of record lives in Git. Repos, CI/CD, and renderers have to be wired up before the platform does much, so value starts on an engineering timeline, not a design one.
04
The good parts sit behind Pro
Custom domain, SSO, prototyping, analytics, multiple workspaces, and more than one code framework are all gated. Modes and collections are capped by plan, too.
The gap
Supernova laps Knapsack
Linked design system graph
Components in a repo are a start. Link tokens, docs, rules, and skills into one graph.
Agents that take action
Agents write docs, contribute tokens, and update components — not just describe them.
No implementation project
Connect Figma and the system is live the same afternoon. Engineering is not a prerequisite.
Real-time multiplayer
Notion-like editing in real time. No branch, no review round-trip, no waiting.
Precise data distribution
Scope exactly what each team and agent needs — not one workspace-wide dump.
Built-in feedback loop
See how people and agents use the system, then close the gaps.
Agent-native
A glimpse of what your team can do with Supernova
Four kinds of work, one system behind them. Slide through the deck, or pick a kind.
What's the correct spacing token for card padding?
ask the agentReview accessibility of my login screen
ask the agentCreate a dark-theme version of this component
ask the agentWhich components use the primary color token?
ask the agentUpdate the border-radius across all form elements
ask the agentShow me the usage guidelines for the modal
ask the agentDoes this component meet WCAG 2.2 AA?
ask the agentGenerate React code for the data table using our system
ask the agentWhat patterns do we have for empty states?
ask the agentFlag any components that still use hard-coded colors
ask the agentSuggest a better token structure for our spacing scale
ask the agentPull the latest API props for the Select component
ask the agentCreate documentation for the new badge component
ask the agentWhich teams are still using the deprecated button?
ask the agentConvert this Figma frame into system-compliant components
ask the agentAudit this screen for token and component consistency
ask the agentPropose a new status indicator based on our existing patterns
ask the agentMigration
Switching is easier than staying
“We were prepared for a steep learning curve, but it turned out to be a smooth glide.”
- 1
Open Knapsack to your agent
Connect Knapsack’s MCP server so Claude, Cursor, or any agent can read your existing workspace — patterns, tokens, and docs included.
- 2
Give it the keys to Supernova
Hook Supernova’s edit capabilities into the same agent — it can write designs, code, Figma links, and docs straight into the system.
- 3
Say the word. Watch it move.
Ask your agent to port the workspace over. It rebuilds the structure in Supernova in minutes — no migration statement of work, no rebuild sprint.
- 4
Land upgraded, not just moved
While it’s there, the agent layers on the graph, contexts, and skills. You switch off Knapsack already ahead of where you started.
The deep dive
What makes Supernova the best Knapsack alternative
Documentation
Pages, Groups, Nested Docs
Structure docs with groups and nesting
Yes
Yes
Real-time collaborative editing
Edit docs live with your team
Yes
Multiplayer for up to 50 people
No
Cloud authoring is web-based, but not live multiplayer
File uploads
Attach files directly in your docs
Yes
Yes
Documentation site access
Publish private or public doc sites
Yes
Private behind a login, or public with unlimited viewers
No
Capped at one public workspace
Private pages
Hide selected pages from public sites
Yes
Yes, but..
Handled by workspace permissions, not per page
Password protected sites
Lock an entire docs site behind a password
No
Password is not a secure way to protect business critical design system data
No
Selective publishing
Publish only pages that are ready
Yes
No
No per-page control — everything in a branch ships together on merge
Approval workflows
Review and approve before publishing
Yes
Yes
Approvals and change management through code review
Dedicated approval role
Propose changes without publishing rights
Yes
No
Page redirects
Keep old links working after moves
Yes
Both site-wide redirects and per-page configuration
No
Custom documentation domain
Host docs on your own domain
Yes
Yes
Rich documentation site theming
Brand your documentation site visually
Yes
You can use your own design system token to style the site
Yes
Custom CSS and JavaScript
Style docs with custom CSS/JS
Yes
Full control over all aspects of the docs site, visual and functional
Yes, but..
Through custom components you build and maintain yourself
Documentation site analytics
Track visits across your docs site
Yes
Yes
Page history
View and restore past page versions
Yes
Unlimited
Yes, but..
Git-backed — you read history in the repo, not the product
Design system data
Design systems
Manage multiple systems in one place
Yes
No
No unified view — each system needs its own separate workspace
Figma data sources
Import components and assets from Figma
Yes
No
Only Figma variables and only in limited capacity
Storybook data sources
Import stories into interactive playgrounds
Yes
No
Knapsack positions itself as a Storybook replacement, not a consumer of it
Automatic data source updates
Auto-update when sources change
Yes
All changes propagate autonomously in the background once per hour
Yes, but..
Docs follow the source, but the loop runs through your pipeline
Token management
Create and manage design tokens in-product
Yes
Full token manager with bulk actions through AI, option to create and manage tokens from Supernova, 23 token types (spacing, typography etc.), fully customizable custom properties, theming, branding and more
Yes, but..
Limited support for advanced features like extended collections
Component management
Manage design and code components together
Yes
Custom components, design components, code components, custom properties such as component statuses, health and more
Yes, but..
Strong support for code components, but only code components
Asset management
Manage assets from Figma and uploads
Yes
Read-only asset manager, sourced by Figma data, custom asset uploads for docs
No
No dedicated asset manager — assets live in docs blocks
Figma variables & collections
Import Figma variables, modes, and collections
Yes
No
Design system versions
Create a snapshot of design system in time
Yes
Yes, but..
Semantic versioning of tokens via Git and private npm packages
Datasets
Split data by platform or brand
Yes
Yes, but..
Modes and collections cover some of this
Adoption tracking
Measure design system usage and impact
Yes
Docs usage tracking, component usage tracking
No
Workspace analytics tracks site visits, not component or token adoption
Data Contexts
Data Contexts
Distributable packages of tokens, components, assets, docs, skills, knowledge and other information
Yes
Full control over how your design systems get distributed, full control over segmentation of data (prepare data packages for humans and AI separated by platform, by team, by department - fully up to you)
No
The workspace is the unit. There is no way to package a scoped slice of tokens, components, docs, skills and knowledge for a specific team or agent.
Dynamic data filters
Construct data context using rule-based system
Yes
Powerful rule-based system so your AI, MCP and docs so you always distribute what you want, no matter what changes you make
No
Composite data contexts
Merge or layer contexts to enable data inheritance
Yes
No
AI & MCP
Dedicated Remote MCP server
MCP server to access data from
Yes
Full access to tokens, components, resolved themes, assets, skills, knowledge, semantic search tools, skill hosting and 40+ more MCP tools
Yes, but..
MCP server is live and gives agents system context, but it is not scoped per team or per agent — everyone gets the same workspace view
Local MCP server
Local MCP server to access data from
No
Vast majority of users don't want to self-host and bother with local MCP servers, as remote server does everything local can, and more
No
MCP Write capabilities
Let agents create and update design-system data
Yes
Agents can write docs, modify components, and contribute tokens through MCP — the same day-to-day actions a maintainer would do by hand.
No
Agents read the system. Changing it still goes through Git and a human.
Background agents
Assign Supernova agent onto task and let it work
Yes, but..
Rolling out now to early-access customers — long-running tasks like full-system audits and proposed changes, running autonomously in the background.
No
Agents run in your tools, not inside the platform
Skills & Knowledge
Agent Skills
Portable packages of instructions, scripts, and resources for agents
Yes
Give agents specialized capabilities and domain expertise. Attach them to a context and distribute via MCP.
No
Knowledge files
Upload generic resources for agents to use
Yes
Generic uploaded resources made available through MCP alongside your design-system data.
No
Feedback
Context feedback
Collect feedback on contexts from AI usage
Yes
Your consumers can send feedback from their AI tool via MCP — missing guidelines, wrong tokens, gaps — and it is stored on the context for the owning team to act on.
No
Developer platform
Code automation pipelines
Turn design system data into code
Yes
Export all data, tokens, components, assets, even skill packages as plugins.
Yes
Git-native CI/CD, with tokens published to private npm packages
Custom code exporters
Ship fully custom TypeScript code exporters
Yes
Full control over exported output, custom scripting via typescript routines and Supernova SDK
Yes, but..
Token pipeline through Style Dictionary, not arbitrary exporters
Code export through custom CI/CD pipelines
Run exporters and SDK access in your own pipelines
Yes
Full access to data through Supernova SDK or exporters invokable through Supernova CLI
Yes
The whole model is built around your own pipeline
SDK access
Read and write data via SDK
Yes
Fully matching the entire feature set of Supernova, both read and write
No
Admin
Single sign-on (SSO)
Sign in with Google, Okta, SAML
Yes
Yes
SCIM
Provision users automatically from your IdP
Yes
No
Centralized administration
Manage users and billing in one place
Yes
Yes
IP allowlisting
Restrict access by IP address
Yes
Also available for IP ranges or combinations
No
Infosec checklist
Security review and checklist
Yes
Yes
Pay by invoice
Pay via invoice instead of card
Yes
Yes
Dedicated account manager
Named manager for ongoing support
Yes
Yes
“It's easy to use, intuitive, and offers many opportunities to scale across teams — a true single source of truth .”
Matthias Fritsch
Design Lead, Celonis
Give your agents a system worth following
See how Supernova documents, syncs, and serves your system in one place.