Is Storybook MCP Addon safe to use?

Storybook MCP Addon has an HVTrust score of 73.5/100 (Grade B), ranked #252 of 1325 tracked AI agent projects. This score reflects verifiable supply-chain integrity, transparency, maintenance, and adoption signals.

What is the trust score for Storybook MCP Addon?

Storybook MCP Addon scores 73.5/100 on HVTracker's evidence-weighted HVTrust scale. It has 271 GitHub stars and is categorized under MCP Servers.

Storybook MCP Addon

storybookjs/mcp

🤖

MCP Servers TypeScript Needs review MIT

Is Storybook MCP Addon safe? Promising trust profile, but some evidence still deserves review.

OSSF Scorecard 4.0 / 10

Provenance Attested

Signed commits 37%

Last push 19d ago

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In detail: Storybook MCP Addon scores 73.5/100 (Grade B), ranked #252 of 1325 tracked open-source AI agent projects, on evidence coverage B (3 of 5 independent signal types). The public evidence: its packages ship with cryptographic provenance; OSSF Scorecard rates its supply-chain practices 4.0/10; 37% of recent commits are signed; last pushed 2026-09-07. Every point is earned from checkable signals — never paid placement. How scoring works →

How Storybook MCP Addon compares in MCP Servers

#148 Search Console MCP 73.7 +0.2
#149 Outline MCP Server 73.6 +0.1
#150 Storybook MCP Addon 73.5 this agent
#151 Marlinjai Email MCP 73.5 ±0
#152 Easy Notion MCP 73.4 −0.1

Bars show each HVTrust score; the tick marks Storybook MCP Addon’s 73.5.

Where the 73.5 comes from

HVTrust dimensions vs the MCP Servers average

73.5 / 100 · 100.0% confidence

Storybook MCP Addon MCP Servers average (775 agents)

Safety / Integrity50% OSSF Scorecard · 30% provenance · 20% signed commits

14.3 / 25

4.0 above avg 10.3

Identity / Provenance60% listing status · 40% build provenance

18.0 / 18

4.6 above avg 13.4

Transparency50% declared license · 50% OSSF Scorecard

11.9 / 17

in line with avg 12.2

Maintenance60% last-push freshness · 40% commit activity

13.5 / 20

1.4 above avg 12.1

AdoptionLog-scaled stars · package downloads

14.1 / 20

6.9 above avg 7.2

Quick Trust Read

What Would Improve It

Increase the share of verified signed commits for clearer maintainer identity.

Recent Changes

2026-09-26

Warning Issued

Warning: eligibility issues detected

2026-09-24

Tool Surface Changed

Detected tool/plugin surface changed: none → declared

2026-09-24

Provider Added

Runtime surface grew — new detected provider dependency: Anthropic

Maintainer Checklist

Raise Scorecard signals Current OSSF Scorecard is 4.0/10. Tighten the weakest checks to improve public safety evidence.

Increase signed commits Raise the share of verified-signed commits to make maintainer identity and release history easier to trust.

Review Flags

[5.1] repository is archived

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53.4

Activity sub-score · out of 100

#150

In MCP Servers

How to read this: HVTrust (0–100) weighs supply-chain signals (provenance, OSSF Scorecard, signed commits, open license) alongside real-world adoption. Grade B reflects the trust score band: A ≥ 80, B ≥ 65, C ≥ 50, D < 50. Evidence coverage B is separate — it grades how many independent signal types back the score (3 of 5), so a high score on thin evidence stays visible. Full methodology →

Rank Trend

2026-08-11 2026-09-26

Activity & Reach

Stars

271

Forks

Last Push

2026-09-07

19 days ago

Commits (4 wk)

Downloads (7d)

1,439,205

npm

HN mentions (30d)

—

Open Issues

Rank Change

▲1

was #253

Analysis

Activity Inputs

53.4 / 100

StarsRepository reach

14.6 / 30

FreshnessLast push recency

22.4 / 25

ActivityRecent commits

8.7 / 25

CommunityFork signal

7.6 / 20

Supply Chain Trust

Package Provenance

Verified

npm attestation

OSSF Scorecard

4.0 / 10

OpenSSF Scorecard · scanned Sep 21, 2026

Signed Commits

37%

of last 100 commits verified

Binary-Artifacts 10

Branch-Protection 4

CI-Tests 10

CII-Best-Practices 0

Code-Review 5

Contributors 10

Dangerous-Workflow 10

Dependency-Update-Tool 0

Fuzzing 0

License 10

Maintained 0

Packaging -1

Pinned-Dependencies 10

SAST 0

Security-Policy 0

Signed-Releases -1

Token-Permissions 0

Vulnerabilities 0

Common questions about Storybook MCP Addon

Storybook MCP Addon has a mixed signal profile. Some trust indicators are present, others are missing. Whether it is safe for your use case depends on which gaps matter to you — review the breakdown below before adopting in production.

Does Storybook MCP Addon publish package provenance?

Yes. Storybook MCP Addon's package releases carry build provenance attestations, which cryptographically link the published package back to its source repository and CI workflow.

Does Storybook MCP Addon have an OpenSSF Scorecard?

Storybook MCP Addon has an OpenSSF Scorecard score of 4.0/10. The Scorecard checks for branch protection, signed releases, dependency updates, fuzzing, code review, and other supply-chain hygiene items. See the full check breakdown on this page.

Is Storybook MCP Addon actively maintained?

Maintained. Last push was 19 days ago.

What license does Storybook MCP Addon use?

Storybook MCP Addon ships under MIT. A declared, OSI-approved license is one of the transparency signals HVTrust scores.

Are Storybook MCP Addon's commits signed?

37% of the last 100 commits to Storybook MCP Addon are verified-signed (GPG, SSH, S/MIME, or GitHub's signing flow). Signed commits help confirm that code was authored by who the commit claims.

Not a safety endorsement. HVTracker describes what public signals show, not whether a project is safe for your use case. Run your own security review before adopting in production.

AI agent surface

MCP, providers, tool surface

Scored in HVTrust

These runtime-trust fields — detected from public repo docs and manifests — contribute a bounded adjustment to this project's HVTrust score alongside supply-chain evidence. The exact values each field can add or subtract are documented in the methodology → Compare this surface across every listed agent in the capability matrix →

MCP Server Support

high confidence

Implemented

Storybook MCP Addon appears to expose MCP server capabilities.

Detailed evidence is not shown in the public view.

External Service Dependencies

medium confidence

1 detected

Public provider/service dependencies detected.

Anthropic

Credential signal: No explicit API-key/config marker detected.

Tool / Plugin Surface

high confidence

Declared

Declared plugin/integration surface detected.

Detailed evidence is not shown in the public view.

Package Provenance Drift

low confidence

Unknown

Package source metadata is missing or inconclusive

Detailed evidence is not shown in the public view.

MCP signal live
External deps live
Tool / plugin surface live
Package provenance drift live

How this surface has changed

Detected changes to Storybook MCP Addon's runtime surface and supply-chain posture, from daily public-signal snapshots. A change here means our detectors see something different — a genuinely changed capability, or better evidence of an existing one.

2026-09-24

Tool Surface Changed

Detected tool/plugin surface changed: none → declared

2026-09-24

Provider Added

Runtime surface grew — new detected provider dependency: Anthropic

2026-09-24

Mcp Status Changed

Detected MCP server support changed: none → implemented

2026-09-23

Provenance Added

Package provenance attestation detected

Maintain Storybook MCP Addon?

For maintainers

HVTrust scores Storybook MCP Addon from public signals only — we never contact maintainers first. If a signal is wrong, stale, or missing (provenance you publish, a Scorecard you run, signed releases), tell us and we'll review it. Corrections are public and tracked on GitHub.

Submit a correction → Add the trust badge

Reputation Timeline

Signal history

2026-09-26

Warning Issued

Warning: eligibility issues detected

2026-09-24

Tool Surface Changed

Detected tool/plugin surface changed: none → declared

2026-09-24

Provider Added

Runtime surface grew — new detected provider dependency: Anthropic

2026-09-24

Mcp Status Changed

Detected MCP server support changed: none → implemented

2026-09-24

Rank Moved

Rank rose 42 spots (#292 → #250)

2026-09-23

Provenance Added

Package provenance attestation detected

2026-09-23

Grade Changed

Trust grade D → B

2026-09-23

Rank Moved

Rank rose 657 spots (#949 → #292)

2026-09-23

HVTrust Changed

HVTrust up 46.1pts (25.9 → 72.0)

2026-09-22

Newly Listed

First tracked at rank #949

2026-09-21

Removed From Active Tracking

Removed from active tracking

2026-09-16

Rank Moved

Rank rose 30 spots (#272 → #242)

2026-09-14

Rank Moved

Rank dropped 11 spots (#260 → #271)

2026-09-13

Rank Moved

Rank dropped 48 spots (#212 → #260)

2026-09-12

Rank Moved

Rank dropped 19 spots (#193 → #212)

2026-09-10

Rank Moved

Rank dropped 28 spots (#167 → #195)

2026-09-07

Warning Issued

Warning: eligibility issues detected

2026-09-07

Rank Moved

Rank rose 28 spots (#192 → #164)

2026-09-05

Rank Moved

Rank dropped 42 spots (#147 → #189)

2026-09-03

Grade Changed

Trust grade C → B

2026-09-03

Rank Moved

Rank rose 549 spots (#694 → #145)

2026-09-03

HVTrust Changed

HVTrust up 25.0pts (50.6 → 75.6)

2026-09-02

Rank Moved

Rank dropped 34 spots (#660 → #694)

2026-09-01

Rank Moved

Rank dropped 24 spots (#636 → #660)

2026-08-31

Rank Moved

Rank dropped 28 spots (#608 → #636)

2026-08-30

Scorecard Added

OSSF Scorecard: 4.8/10

2026-08-30

Grade Changed

Trust grade D → C

2026-08-30

Rank Moved

Rank rose 147 spots (#755 → #608)

2026-08-30

HVTrust Changed

HVTrust up 6.8pts (43.4 → 50.2)

2026-08-29

Rank Moved

Rank dropped 47 spots (#708 → #755)

2026-08-28

Rank Moved

Rank dropped 24 spots (#684 → #708)

2026-08-27

Rank Moved

Rank dropped 23 spots (#661 → #684)

2026-08-26

Rank Moved

Rank dropped 99 spots (#562 → #661)

2026-08-24

Rank Moved

Rank dropped 13 spots (#547 → #560)

2026-08-22

Rank Moved

Rank rose 12 spots (#557 → #545)

2026-08-16

Rank Moved

Rank dropped 11 spots (#548 → #559)

2026-08-10

Rank Moved

Rank dropped 21 spots (#552 → #573)

2026-08-09

Activity Score Changed

Activity score down 6pts (60 → 54)

2026-08-08

Newly Listed

First tracked at rank #532

GitHub → npm: @storybook/addon-mcp

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Other agents in MCP Servers

Data sources
GitHub REST API (repo, commits, stars, forks, license) · npm Registry (downloads, provenance) · OpenSSF Scorecard CLI
Each agent's signals refresh once daily across 6 staggered batches. Methodology v4.3 · Raw JSON