M

mcpsnoop

Wireshark for MCP, a transparent proxy that shows the real traffic between your

Wireshark for MCP, a transparent proxy that shows the real traffic between your AI client and MCP servers, fails CI on it and exports it as OpenTelemetry spans

kerlenton/mcpsnoop · v0.0.0 · Tools & Integrations

kerlentonOwner verifiedcaution
InstallSource
67Follow0

Trust Score

67

Security

59

Surfaces

0

Live launch

Wireshark for MCP, a transparent proxy that shows the real traffic between your

Launched
Oct 3, 2026
Pricing
free
Availability
available

What is mcpsnoop?

mcpsnoop is a published tools & integrations plugin for AI coding agents in the codex ecosystem, developed by kerlenton and distributed through the HOL AI plugin registry. Wireshark for MCP, a transparent proxy that shows the real traffic between your AI client and MCP servers, fails CI on it and exports it as OpenTelemetry spans

Canonical slug
kerlenton/mcpsnoop
Version
v0.0.0 · updated Oct 3, 2026

Trust & Reputation

HOL Trust Score
67

Factor Analysis

Per-metric points (0–100 each) combined via a weighted average into the overall score.

Installability
64pts
Maintenance
55pts
MCP Posture
100pts
Plugin Security
59pts
Provenance
70pts
Publisher Quality
75pts

Registry Snapshot

Publisher verification
No
Marketplace source
Unknown
Scanner
Broker fallback
Safety label
caution
Digest verified
Yes

Trust & reputation

Trust & Reputation

HOL Trust Score
67

Factor Analysis

Per-metric points (0–100 each) combined via a weighted average into the overall score.

Installability
64pts
Maintenance
55pts
MCP Posture
100pts
Plugin Security
59pts
Provenance
70pts
Publisher Quality
75pts

Provenance

Plugin root
.
Source repo
https://github.com/kerlenton/mcpsnoop
Source commit
ed22065a1b42…
Publisher verified
No
Owner verified
@kerlenton

Scanner CI check is still running

No action is required. This listing will update after the catalog rechecks scanner CI.

README badge check is still running

No action is required. This listing will update after the catalog rechecks the source README.

Security Posture

caution
Safety label
59
Security score
0
High findings
Provider
registry-broker-fallback
Grade
F · caution
Version
Unknown
cisco-skill-scanner: not_applicable

Findings

mediumpublishabilitypublishability.link.missing.websiteURL

websiteURL should be present for marketplace readiness.

mediumpublishabilitypublishability.link.missing.privacyPolicyURL

privacyPolicyURL should be present for marketplace readiness.

mediumpublishabilitypublishability.link.missing.termsOfServiceURL

termsOfServiceURL should be present for marketplace readiness.

lowoperational-securitysupply-chain.lockfile-missing

Repository snapshot does not include a lockfile.

mcpsnoop — Frequently asked questions

What is mcpsnoop?
mcpsnoop is an AI plugin in the HOL registry. Wireshark for MCP, a transparent proxy that shows the real traffic between your AI client and MCP servers, fails CI on it and exports it as OpenTelemetry spans
How do I install mcpsnoop?
Install mcpsnoop in your harness: Codex — codex plugin marketplace add kerlenton/mcpsnoop; MCP — git clone https://github.com/kerlenton/mcpsnoop. Full step-by-step guidance is on the HOL plugin page.
How do I install mcpsnoop in Codex?
To install mcpsnoop in Codex, start with codex plugin marketplace add kerlenton/mcpsnoop. The complete step-by-step install guide for Codex is on the HOL plugin page.
How do I install mcpsnoop in MCP?
To install mcpsnoop in MCP, start with git clone https://github.com/kerlenton/mcpsnoop. The complete step-by-step install guide for MCP is on the HOL plugin page.
Is mcpsnoop free?
mcpsnoop is listed as free on HOL.
Who publishes mcpsnoop?
mcpsnoop is published by kerlenton and listed on HOL.
Is mcpsnoop available now?
mcpsnoop is currently available according to its latest public launch.

Install Guidance

Install in Codex

Install through the Codex CLI plugin marketplace.

Codex plugin docs
  1. 1

    Register the marketplace

    Run in any terminal. Codex reads the marketplace entry from .agents/plugins/marketplace.json (or the legacy .claude-plugin path) in the repository. If the repository ships none, add the generated entry from the Advanced section below first.

    shell
  2. 2

    Install from the Plugins browser

    Open Codex, open the Plugins browser, choose the mcpsnoop marketplace, and install mcpsnoop.

  3. 3

    Verify the marketplace registration

    shell
Screenshot 2026 10 03 at 9.20.08 PM
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Screenshot 2026 10 03 at 9.20.08 PM

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Plugin Manifest

{
  "name": "mcpsnoop",
  "version": "0.0.0",
  "description": "Wireshark for MCP, a transparent proxy that shows the real traffic between your AI client and MCP servers, fails CI on it and exports it as OpenTelemetry spans",
  "repository": "https://github.com/kerlenton/mcpsnoop",
  "homepage": "https://github.com/kerlenton/mcpsnoop",
  "interface": {
    "displayName": "mcpsnoop",
    "developerName": "kerlenton",
    "category": "Tools & Integrations"
  },
  "registryIndexVersion": 5
}

Marketplace Source

Repo URL
https://github.com/kerlenton/mcpsnoop
Marketplace path
Unknown
Source path
.
Install policy
Unspecified

File Inventory

.codex-plugin/plugin.json

plugin-manifest

443 bytes

54b3ccfce9f37ead…

README.md

file

14,597 bytes

0381fe90f2802c4b…

README.md

file

14,597 bytes

0381fe90f2802c4b…

SECURITY.md

file

956 bytes

d8facd1a8a967310…

History, reviews, and alternatives

Latest launch

User reviews

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The first substantive review can be added on this page.

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Milestones and alternatives

Makers can publish releases and security milestones after claiming the plugin.