An interface to Langfuse, a system for inspecting and managing data from AI applications. It covers traces, prompts, datasets, scores, sessions, APIs, documentation, and SDKs.

Use it to query or change Langfuse resources through the CLI, or look up concepts, API usage, and SDK integrations.

It helps you find Langfuse information or work with its data without searching through separate references and integration guides.

How kevyder/constitution_chat configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to kevyder/constitution_chat. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/kevyder/constitution_chat/master/.agents/skills/langfuse/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/kevyder/constitution_chat

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/kevyder/constitution_chat/langfuse/github.svg)](https://agentmods.dev/skills/kevyder/constitution_chat/langfuse)

Your own site

<a href="https://agentmods.dev/skills/kevyder/constitution_chat/langfuse"><img src="https://agentmods.dev/badge/skills/kevyder/constitution_chat/langfuse/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/kevyder/constitution_chat/langfuse"><img src="https://agentmods.dev/badge/skills/kevyder/constitution_chat/langfuse.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 100 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,724 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.

Origin unknown No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00100	$0.01724
Opus 5.5	$0.00040	$0.00690
Sonnet 5.5	$0.00020	$0.00345
Haiku 4.5	$0.00010	$0.00172

Measured 2mo ago against content hash d27b04f9d46c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

langfuse scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- Bash(curl *langfuse.com/*)

.agents/skills/langfuse/SKILL.md · 145 lines

The source is not reproduced here

No licence file

Read it on GitHub

Files

What ships with it

10 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

2mo ago First seen · 145 lines · 100 tokens per session scan A d27b04f9d46c

Subscribe to this mod's changes

langfuse is a skill published in the GitHub repository kevyder/constitution_chat (4 stars, last pushed 27d ago), with no licence file. It adds 100 tokens to every session and 1,724 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Analytics and metrics Data and AI

langfuse next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
langfusekevyder/constitution_chat	Skill	4	27d ago	none	A	100	Claude Code
agent-platform-model-registrygoogle/skills	Skill	22k	yesterday	Apache-2.0	A	60	Claude Code, Codex
foundry-config-setupmicrosoft/agent-framework	Skill	15k	yesterday	MIT	A	65	Claude Code, Codex
google-cloud-solution-agentic-analytics-spark-knowledge-cataloggoogle/skills	Skill	22k	yesterday	Apache-2.0	A	132	Claude Code, Codex
training-checkwanshuiyin/Auto-claude-code-research-in-sleep	Skill	19k	3d ago	MIT	A	35	Claude Code
nemo-automodel-launcher-configNVIDIA/skills	Skill	3.9k	yesterday	Apache-2.0	A	30	Claude Code
finetuningmicrosoft/skills	Skill	3.2k	yesterday	MIT	A	132	Claude Code

constitution_chat: Skill for Claude Code

Borrowing it

Wrote this? Show the measurements

What it costs to keep this loaded

Grade A, and why

Makes network callslowCapability

The source is not reproduced here

No licence file

What ships with it

What this file has done since we first saw it

langfuse compared with skills from other repositories