updated 2026-11-10 04:07 UTC

Plumb MCP

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MCP Servers TypeScript Listed MIT

Is Plumb MCP safe? Thin or incomplete trust evidence. Review carefully before production use.

OSSF Scorecard 4.4 / 10
Provenance None
Signed commits 5%
Last push 27d ago
Advisories None known
Compare Plumb MCP

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In detail: Plumb MCP scores 54.1/100 (Grade C), ranked #876 of 1374 tracked open-source AI agent projects, on evidence coverage B (3 of 5 independent signal types). The public evidence: no package-provenance attestation found; OSSF Scorecard rates its supply-chain practices 4.4/10; 5% of recent commits are signed; no published advisory affects its latest release (plumb-mcp); last pushed 2026-10-14. Every point is earned from checkable signals — never paid placement. How scoring works →

How Plumb MCP could raise its score

Each line changes one public signal and recomputes with the live scoring function. The gains don't add up exactly, because the score is capped near the top.

Already done? Suggest a correctionAdd the trust badge

Chain of custody

Scanners check what the code says. This traces who ships Plumb MCP and whether that has changed: from the source repository, through how changes are reviewed and released, to the package you install. These are the checks for OWASP ASI04 Agentic Supply Chain Vulnerabilities.

  1. Source Partly signed

    github.com/tathagat22/plumb-mcp, MIT, last pushed 2026-10-14. 5% of the last 100 commits carry a verified signature; the rest can't be tied to a verified identity.

  2. Review and release Mixed

    OpenSSF Scorecard rates the repository's practices 4.4/10 (scanned Nov 1, 2026). The checks that decide who can get a change released:

    • Code Review0
    • Branch Protection3
    • Signed Releasesn/a
    • Dangerous Workflow10
    • Token Permissions0
    • Pinned Dependencies2
    All 18 Scorecard checks
    Binary-Artifacts 10
    Branch-Protection 3
    CI-Tests 0
    CII-Best-Practices 0
    Code-Review 0
    Contributors 0
    Dangerous-Workflow 10
    Dependency-Update-Tool 10
    Fuzzing 0
    License 10
    Maintained 10
    Packaging 10
    Pinned-Dependencies 2
    SAST 0
    Security-Policy 0
    Signed-Releases -1
    Token-Permissions 0
    Vulnerabilities 0

  3. Published packages Linked, not attested

    • npm plumb-mcp Source link points back to this repo No build attestation

    Without a build attestation, nothing proves the published files were built from this repository.

  4. What you install today No known advisories

    Latest release checked: plumb-mcp 0.13.2. No published advisory affects it (OSV, checked 2026-11-04).

Changes to this chain

  • 2026-08-27 OSSF Scorecard: 4.6/10

Evidence behind this score

Coverage B: 3 of 5 independent evidence types found.

  • GitHub repository data
  • Package downloads
  • Supply-chain checks
  • Public actions (missing)
  • Community mentions (missing)

Verify this score yourself

Every build re-issues Plumb MCP’s score as an Ed25519-signed credential, valid for 7 days. You can check it offline against HVTracker’s published key; if anyone changes a number after signing, verification fails.

Signed credential (JSON) How to verify

What this score doesn’t check

It covers who ships the code, not what the code does. It doesn’t read tool descriptions or prompts for injected instructions, watch runtime behaviour, or find bugs nobody has disclosed yet. For that, run a content scanner before you connect it, such as Cisco MCP Scanner or Snyk Agent Scan.

How Plumb MCP compares in MCP Servers

  1. #483 Akshare One MCP 54.3 +0.2
  2. #484 Fanout MCP 54.3 +0.2
  3. #485 Plumb MCP 54.1 this agent
  4. #486 A2asearch MCP 54.0 −0.1
  5. #487 JS Reverse MCP 54.0 −0.1

Bars show each HVTrust score; the tick marks Plumb MCP’s 54.1.

Where the 54.1 comes from

HVTrust dimensions vs the MCP Servers average

54.1 / 100 · 100.0% confidence

Plumb MCP MCP Servers average (778 agents)

Safety / Integrity50% OSSF Scorecard · 30% provenance · 20% signed commits
5.8 / 25
5.0 below avg 10.8
Identity / Provenance60% listing status · 40% build provenance
10.8 / 18
2.9 below avg 13.7
Transparency50% declared license · 50% OSSF Scorecard
12.2 / 17
in line with avg 12.3
Maintenance60% last-push freshness · 40% commit activity
13.3 / 20
1.1 above avg 12.2
AdoptionLog-scaled stars · package downloads
7.3 / 20
in line with avg 7.6

Quick Trust Read

What Would Improve It
Publish package provenance or release attestations for stronger supply-chain evidence.
Recent Changes
2026-10-31
Rank Moved
Rank dropped 25 spots (#837 → #862)
2026-10-30
Rank Moved
Rank dropped 18 spots (#819 → #837)
2026-10-27
Rank Moved
Rank rose 26 spots (#839 → #813)
Maintainer Checklist
Raise Scorecard signals Current OSSF Scorecard is 4.4/10. Tighten the weakest checks to improve public safety evidence.
Publish provenance Add package provenance or release attestations so users can verify where shipped artifacts came from.
Increase signed commits Raise the share of verified-signed commits to make maintainer identity and release history easier to trust.
Compare with another agent
View MCP Servers Report missing data
47.7
Activity sub-score · out of 100
#485
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 C 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 →

Signals refreshed 2026-11-10 04:07 UTC · Repo last pushed 27 days ago

Rank Trend

2026-09-29 2026-11-10

Activity & Reach

Stars
80
Forks
8
Last Push
2026-10-14
27 days ago
Commits (4 wk)
5
Downloads (7d)
100
npm
HN mentions (30d)
—
Open Issues
3
Rank Change
▼1
was #875

Analysis

Activity Inputs

47.7 / 100
StarsRepository reach
11.5 / 30
FreshnessLast push recency
21.2 / 25
ActivityRecent commits
9.7 / 25
CommunityFork signal
4.4 / 20

Common questions about Plumb MCP

Public trust evidence for Plumb MCP is thin: several supply-chain signals are missing or weak. This does not mean the project is unsafe — it means an outside observer cannot easily verify the usual integrity checks. Treat with extra scrutiny.
Does Plumb MCP publish package provenance?
No published build provenance is currently detected for Plumb MCP. This is common for open-source projects but means consumers cannot independently verify that the package on the registry matches the GitHub source.
Does Plumb MCP have an OpenSSF Scorecard?
Plumb MCP has an OpenSSF Scorecard score of 4.4/10. 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 Plumb MCP actively maintained?
Maintained. Last push was 27 days ago.
What license does Plumb MCP use?
Plumb MCP ships under MIT. A declared, OSI-approved license is one of the transparency signals HVTrust scores.
Are Plumb MCP's commits signed?
5% of the last 100 commits to Plumb MCP 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
Plumb MCP appears to expose MCP server capabilities.
Detailed evidence is not shown in the public view.
External Service Dependencies
high confidence
1 detected
Public provider/service dependencies detected.
Credential signal: API keys or service config markers documented.
Tool / Plugin Surface
high confidence
Declared
Declared plugin/integration surface detected.
Detailed evidence is not shown in the public view.
Package Provenance Drift
high confidence
Match
Published package metadata matches the tracked repo
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 Plumb MCP'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
2026-09-23
Mcp Status Changed
Detected MCP server support changed: none → implemented
2026-09-03
Provider Added
Runtime surface grew — new detected provider dependency: Anthropic

Maintain Plumb MCP?

For maintainers

HVTrust scores Plumb MCP 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
Rank 40HVTrust 4Score 2Grade 2Surface 2Scorecard 1Delisted 1Listed 1MCP 1Surface 1
2026-10-31
Rank Moved
Rank dropped 25 spots (#837 → #862)
2026-10-30
Rank Moved
Rank dropped 18 spots (#819 → #837)
2026-10-27
Rank Moved
Rank rose 26 spots (#839 → #813)
2026-10-23
Rank Moved
Rank rose 59 spots (#893 → #834)
2026-10-18
Rank Moved
Rank dropped 11 spots (#872 → #883)
2026-10-17
Rank Moved
Rank dropped 10 spots (#862 → #872)
2026-10-16
Rank Moved
Rank dropped 77 spots (#785 → #862)
2026-10-15
Rank Moved
Rank dropped 19 spots (#766 → #785)
2026-10-12
Rank Moved
Rank dropped 12 spots (#752 → #764)
2026-10-11
Rank Moved
Rank rose 68 spots (#820 → #752)
2026-10-10
Rank Moved
Rank rose 22 spots (#842 → #820)
2026-10-09
Rank Moved
Rank dropped 16 spots (#826 → #842)
2026-10-01
Rank Moved
Rank dropped 31 spots (#782 → #813)
2026-09-30
Rank Moved
Rank rose 41 spots (#823 → #782)
2026-09-27
Rank Moved
Rank rose 14 spots (#828 → #814)
2026-09-25
Rank Moved
Rank rose 22 spots (#845 → #823)
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
Rank Moved
Rank dropped 46 spots (#799 → #845)
2026-09-23
Mcp Status Changed
Detected MCP server support changed: none → implemented
2026-09-23
Grade Changed
Trust grade D → C
2026-09-23
Rank Moved
Rank rose 169 spots (#968 → #799)
2026-09-23
HVTrust Changed
HVTrust up 29.0pts (25.5 → 54.5)
2026-09-22
Newly Listed
First tracked at rank #968
2026-09-21
Removed From Active Tracking
Removed from active tracking
2026-09-20
Rank Moved
Rank dropped 21 spots (#807 → #828)
2026-09-19
Rank Moved
Rank dropped 19 spots (#788 → #807)
2026-09-17
Rank Moved
Rank dropped 146 spots (#635 → #781)
2026-09-17
HVTrust Changed
HVTrust down 4.4pts (59.3 → 54.9)
2026-09-17
Activity Score Changed
Activity score down 14pts (61 → 47)
2026-09-15
Rank Moved
Rank rose 50 spots (#684 → #634)
2026-09-09
Rank Moved
Rank dropped 10 spots (#663 → #673)
2026-09-08
Rank Moved
Rank dropped 14 spots (#649 → #663)
2026-09-07
Rank Moved
Rank dropped 49 spots (#600 → #649)
2026-09-06
Rank Moved
Rank dropped 13 spots (#587 → #600)
2026-09-05
Rank Moved
Rank dropped 77 spots (#510 → #587)
2026-09-04
Rank Moved
Rank dropped 14 spots (#496 → #510)
2026-09-03
Provider Added
Runtime surface grew — new detected provider dependency: Anthropic
2026-09-03
Grade Changed
Trust grade D → C
2026-09-03
Rank Moved
Rank rose 512 spots (#1008 → #496)
2026-09-03
HVTrust Changed
HVTrust up 19.6pts (38.6 → 58.2)
2026-09-02
Rank Moved
Rank dropped 53 spots (#955 → #1008)
2026-09-01
Rank Moved
Rank dropped 35 spots (#920 → #955)
2026-08-31
Rank Moved
Rank dropped 29 spots (#891 → #920)
2026-08-30
Rank Moved
Rank dropped 41 spots (#850 → #891)
2026-08-29
Rank Moved
Rank dropped 42 spots (#808 → #850)
2026-08-28
Rank Moved
Rank dropped 24 spots (#784 → #808)
2026-08-27
Scorecard Added
OSSF Scorecard: 4.6/10
2026-08-27
Rank Moved
Rank rose 304 spots (#1088 → #784)
2026-08-27
HVTrust Changed
HVTrust up 17.5pts (21.4 → 38.9)
2026-08-26
Rank Moved
Rank dropped 68 spots (#1020 → #1088)
2026-08-24
Rank Moved
Rank dropped 14 spots (#1001 → #1015)
2026-08-18
Rank Moved
Rank rose 47 spots (#1040 → #993)
2026-08-18
Activity Score Changed
Activity score up 7pts (55 → 62)
2026-08-16
Rank Moved
Rank dropped 31 spots (#1015 → #1046)
GitHub → Website → npm: plumb-mcp

Embed Badge Badge guide for maintainers →

For maintainers
HVTrust 54.1 Grade C
Markdown:
[![HVTrust](https://hvtracker.net/badge/plumb-mcp.svg)](https://hvtracker.net/agents/plumb-mcp)
HTML:
<a href="https://hvtracker.net/agents/plumb-mcp"><img src="https://hvtracker.net/badge/plumb-mcp.svg" alt="HVTrust"></a>

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 v4.4 · Raw JSON