Langfuse Observability icon

Langfuse Observability

Query traces, debug exceptions, analyze sessions, and manage prompts via MCP tools.

aviv-sinai/langfuse · v0.12.1 · Tools & Integrations

Aviv Sinaireview
InstallSourceClaim this plugin
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Trust Score

67

Security

71

Surfaces

1

What is Langfuse Observability?

Langfuse Observability is a published tools & integrations plugin for AI coding agents in the mcp ecosystem, developed by Aviv Sinai and distributed through the HOL AI plugin registry. Query traces, debug exceptions, analyze sessions, and manage prompts via MCP tools.

Canonical slug
aviv-sinai/langfuse
Version
v0.12.1 · updated Oct 9, 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
76pts
Maintenance
55pts
MCP Posture
100pts
Plugin Security
71pts
Provenance
70pts
Publisher Quality
75pts

Registry Snapshot

Publisher verification
No
Marketplace source
Unknown
Scanner
Broker fallback
Safety label
review
Digest verified
Yes
1 bundled skill — copy or download SKILL.mdOpen skills

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
76pts
Maintenance
55pts
MCP Posture
100pts
Plugin Security
71pts
Provenance
70pts
Publisher Quality
75pts

Provenance

Plugin root
.
Source repo
https://github.com/avivsinai/langfuse-mcp
Source commit
fb2a6030a9d0…
Publisher verified
No
Owner verified
Not owner verified

Continuous scanner CI not detected

This plugin remains listed. Its overall trust score is reduced by 10% because security checks are not maintained in the source repository's CI.

Optional: maintain the scanner in the source repository's CI to receive the full trust score. Listing does not require that change.

Verified badge not detected

Add the HOL verified badge to the repository README to score +2% trust. Plugin owners can open that pull request from Guard Plugins.

Security Posture

review
Safety label
71
Security score
0
High findings
Provider
registry-broker-fallback
Grade
C · review
Version
Unknown
cisco-skill-scanner: unknown

Findings

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.

infoskill-securityskill-scan.unavailable

Cisco skill scanner timed out after 60000 ms

Langfuse Observability — Frequently asked questions

What is Langfuse Observability?
Langfuse Observability is an AI plugin in the HOL registry. Query traces, debug exceptions, analyze sessions, and manage prompts via MCP tools.
How do I install Langfuse Observability?
Install Langfuse Observability in your harness: Codex — codex plugin marketplace add avivsinai/langfuse-mcp; Claude Code — /plugin marketplace add avivsinai/langfuse-mcp; MCP — git clone https://github.com/avivsinai/langfuse-mcp. Full step-by-step guidance is on the HOL plugin page.
How do I install Langfuse Observability in Codex?
To install Langfuse Observability in Codex, start with codex plugin marketplace add avivsinai/langfuse-mcp. The complete step-by-step install guide for Codex is on the HOL plugin page.
How do I install Langfuse Observability in Claude Code?
To install Langfuse Observability in Claude Code, start with /plugin marketplace add avivsinai/langfuse-mcp. The complete step-by-step install guide for Claude Code is on the HOL plugin page.
How do I install Langfuse Observability in MCP?
To install Langfuse Observability in MCP, start with git clone https://github.com/avivsinai/langfuse-mcp. The complete step-by-step install guide for MCP is on the HOL plugin page.
Is Langfuse Observability free?
Pricing for Langfuse Observability is published on its HOL plugin page when the maker schedules a launch.
Who publishes Langfuse Observability?
Langfuse Observability is published by Aviv Sinai and listed on HOL.
Is Langfuse Observability available now?
Langfuse Observability availability is listed on its HOL plugin page.

Install Guidance

Install in Claude Code

Install through the Claude Code plugin marketplace.

Claude Code plugin docs
  1. 1

    Add the marketplace

    Run this inside a Claude Code session.

    claude code
  2. 2

    Install the plugin

    Use the plugin name and the marketplace name shown by the previous command.

    claude code
  3. 3

    Scripted alternative

    Non-interactive equivalent for scripts and CI pipelines. Add --scope project to pin the install to one repository.

    shell

Plugin Manifest

{
  "name": "langfuse",
  "version": "0.12.1",
  "description": "Langfuse observability - query traces, debug exceptions, analyze sessions, manage prompts via MCP tools",
  "author": {
    "name": "Aviv Sinai",
    "url": "https://github.com/avivsinai"
  },
  "repository": "https://github.com/avivsinai/langfuse-mcp",
  "homepage": "https://github.com/avivsinai/langfuse-mcp#skills",
  "license": "MIT",
  "skills": "./",
  "keywords": [
    "langfuse",
    "observability",
    "traces",
    "llm",
    "prompts",
    "debugging",
    "mcp",
    "telemetry"
  ],
  "interface": {
    "displayName": "Langfuse Observability",
    "developerName": "Aviv Sinai",
    "composerIcon": "./assets/langfuse-icon.svg",
    "shortDescription": "Query traces, debug exceptions, analyze sessions, and manage prompts via MCP",
    "longDescription": "Inspect Langfuse traces, observations, sessions, exceptions, prompts, and datasets from Codex via bundled skills and MCP workflows.",
    "category": "Observability",
    "capabilities": [
      "Read",
      "Write"
    ],
    "websiteURL": "https://github.com/avivsinai/langfuse-mcp",
    "defaultPrompt": [
      "Investigate the latest Langfuse exceptions and tell me which service is failing first.",
      "Summarize the slowest traces from the last 24 hours and suggest where to look next.",
      "Create a dataset item from this failing trace and label the related prompt for follow-up."
    ]
  },
  "holManifestOrigin": "repository",
  "registryIndexVersion": 5
}

Marketplace Source

Repo URL
https://github.com/avivsinai/langfuse-mcp
Marketplace path
Unknown
Source path
plugins/avivsinai/langfuse-mcp
Install policy
AVAILABLE

Skills

1 SKILL.md file ship with this plugin. Preview, copy, or download each one, then install them with the Skills CLI.

Share
skills-cli

  • langfuse

    skills/langfuse/SKILL.md

    Investigate AI traces, observations, exceptions, latency, sessions, prompts, datasets, annotation queues, and scores through Langfuse MCP. Use when the request names Langfuse or asks to diagnose recorded AI behavior.

    Raw SKILL.md

File Inventory

.claude-plugin/plugin.json

file

573 bytes

aabe40efeaebca48…

.codex-plugin/plugin.json

plugin-manifest

1,305 bytes

13f9cc3e6ce36a70…

.cursor/rules/langfuse-mcp-general-rules.mdc

file

1,968 bytes

b8944562a6fb7f34…

AGENTS.md

file

238 bytes

4bcaeae6e76c4230…

assets/langfuse-icon.svg

asset

2,797 bytes

a121c41515c54a85…

CLAUDE.md

file

3,292 bytes

9af60a2786954985…

README.md

file

16,467 bytes

45e0df49df2de5c6…

SECURITY.md

file

1,759 bytes

9f38663bf10ae5e4…

skills/langfuse/references/setup.md

skill

5,523 bytes

ed72c6e04f7a077d…

skills/langfuse/references/tool-reference.md

skill

26,788 bytes

143b91f062644e9b…

skills/langfuse/references/workflows.md

skill

7,254 bytes

41074997c9258817…

skills/langfuse/SKILL.md

skill

2,319 bytes

722da5e982acf6d8…