Storybook MCP Addon
Storybook MCP Addon is an MCP server published by Storybook; its MCP spec-revision support has not been verified yet. It is the first-party server from Storybook. Last verified 2026-08-25.
Does Storybook MCP Addon support the current MCP specification (2026-07-28)?
Undetermined. We have not verified which MCP specification revision Storybook MCP Addon supports (as of 2026-08-25).
Is Storybook MCP Addon a first-party (official) MCP server?
Yes. Storybook MCP Addon is the first-party MCP server published by Storybook (last verified 2026-08-25).
How do I connect to Storybook MCP Addon?
Storybook MCP Addon is available via the package npm:@storybook/addon-mcp, the official MCP Registry under io.github.storybookjs/addon-mcp, the source repository at https://github.com/storybookjs/mcp. Authentication: none. Transports: streamable-http.
When were Storybook MCP Addon's facts last verified?
2026-08-25. Each fact on this page links to the sources used to verify it.
The Storybook MCP Addon serves an MCP endpoint from a running Storybook
dev server, by default at http://localhost:6006/mcp over streamable
HTTP. Storybook's docs describe the purpose: agents connect to
"understand your components and documentation, generate stories, run
tests, and more." Tools group into development
(get-changed-stories, get-storybook-story-instructions,
preview-stories), docs (list-all-documentation, get-documentation,
get-documentation-for-story), and testing (run-story-tests).
Two scoping facts from the vendor's own docs: the AI capabilities, including the MCP server, are in preview, and "are currently only supported for React projects." The endpoint binds to the local dev server with no documented authentication.
The addon lives in the storybookjs/mcp monorepo alongside a standalone
@storybook/mcp library and plugin packages for Claude Code and Codex.
An implementation note: the packages are built on the third-party tmcp
SDK stack rather than the official TypeScript SDK. No Storybook surface
names a supported MCP specification revision, so spec_status is
unknown.
Version bookkeeping: the official MCP Registry record describes 0.6.0 (2026-04-14) while npm's latest is 0.7.0 (2026-07-10), and the in-repo server.json on main still reads 0.4.1, so the registry record trails the published package.
How widely adopted is Storybook MCP Addon?
Ranked #66 in The MCP 500 with Adoption Index 58.45 (snapshot , methodology v1).
| Measurement | Value | Source |
|---|---|---|
| Official MCP Registry | yes | API · |
| Docker MCP Catalog | no | API · |
| npm downloads (weekly) | 1,543,268 | API · |
| GitHub stars | 270 | API · |
| GitHub forks | 43 | API · |
| Last push | 2026-09-07T14:28:17Z | API · |
| Repository archived | yes | API · |
Repository and package signals for Storybook MCP Addon
Measured directly from the source registries, not asserted from a document. Each figure carries the date it was read; none of it affects the verified spec status above.
Repository as of
- Created
- Open issues
- 48
- Primary language
- TypeScript
- License (repository)
- MIT
- Continuous integration
- Present
- Tests
- Present
- Security policy
- None
Package (npm) as of
- Latest version
0.7.0- Last published
- First published
- Releases
- 54
- License (package)
- MIT
- Maintainers
- 12
- Direct dependencies
- 6
- Unpacked size
- 158 KB
- Registry signature
- Signed
- Build provenance
- Attested
How was this verified, and what are the sources?
Verified · method: vendor-docs
· confidence 0.85 (Good).
- Official MCP Registry record io.github.storybookjs/addon-mcp version 0.6.0 (published 2026-04-14) - npm package @storybook/addon-mcp, streamable-http transport, website storybook.js.org/docs/ai/mcp/overview - accessed
- Storybook docs "MCP server overview" - "Storybook's MCP server connects your Storybook to AI agents, allowing them to understand your components and documentation, generate stories, run tests, and more"; server reachable at http://localhost:6006/mcp on the dev server; states that while in preview, Storybook's AI capabilities (manifests and MCP server) are supported for React projects only; toolsets grouped as development (get-changed-stories, get-storybook-story-instructions, preview-stories), docs (list-all-documentation, get-documentation, get-documentation-for-story), and testing (run-story-tests) - accessed
- storybookjs/mcp monorepo - hosts @storybook/mcp, @storybook/addon-mcp, @storybook/claude-code-plugin, and @storybook/codex-plugin; the packages/addon-mcp server.json declares streamable-http transport at http://localhost:{--port}/mcp; the addon's packages depend on the third-party tmcp SDK stack rather than @modelcontextprotocol/sdk - accessed
- npm registry record for @storybook/addon-mcp - dist-tags.latest 0.7.0, published 2026-07-10, one minor version ahead of the official MCP Registry record's 0.6.0 - accessed
- Staleness re-verification via the GitHub API - repository storybookjs/mcp active (pushed 2026-08-14, not archived), latest release @storybook/addon-mcp@0.7.0 (2026-07-10); entity facts unchanged - accessed
- storybookjs/mcp packages/addon-mcp README - "Storybook addon for MCP-powered UI development workflows", MCP server served from the Storybook dev server at /mcp; no MCP revision named - accessed
- npm registry, @storybook/addon-mcp latest - 0.7.0; dependencies include tmcp ^1.19.4 and @storybook/mcp 0.8.0; no @modelcontextprotocol/sdk runtime dependency - accessed