Langfuse API

Name: Langfuse API
Author: rodrigorjsf

제작자: rodrigorjsf버전 0.2.0i★ –i내 컴퓨터에서 실행

레지스트리 이름io.github.rodrigorjsf/langfuse-api-mcp

설치

개요

제작자가 쓴 설명(영어 원문)

Langfuse public API (Cloud and self-hosted): traces, prompts, datasets and gated writes.

PopNx MCP의 세 기둥

이 세 가지는 절대 하나의 점수로 합치지 않아요. 의견, 측정, 인기는 서로 다른 것이니까요.

사용자 의견i아직 리뷰가 없어요리뷰는 다음 단계에서 계정 기능과 함께 열려요
우리의 기본 점검i1개 중 1개 통과공개된 정보로 점검했으며, 코드는 아직 스캔하지 않았어요
사용 정도i아직 측정 안 함★ –

할 수 있는 일

이 서버는 아직 쉬운 말로 된 요약을 쓰지 못했어요. 아래는 레지스트리에서 읽어 온 사실이에요.

연결 방식: 내 컴퓨터에서 실행
전송 방식: stdio
카테고리: 기타
입력해야 할 값: LANGFUSE_PUBLIC_KEY, LANGFUSE_SECRET_KEY, LANGFUSE_BASE_URL

설치

쓰고 있는 AI 앱을 고른 다음 설정을 복사하세요.

설치하기 전에

기본 점검: 1개 중 1개 통과
내 컴퓨터에서 내 사용자 계정의 권한(파일, 네트워크, 앱)으로 실행돼요.
직접 입력할 값: LANGFUSE_PUBLIC_KEY, LANGFUSE_SECRET_KEY, LANGFUSE_BASE_URL, LANGFUSE_CA_CERT

비밀로 표시된 값은 내 계정의 열쇠예요. 절대 다른 사람과 공유하거나 채팅에 붙여 넣지 마세요.

필요한 것

npmNode.js 설치(npx 명령어용)

어떤 앱을 쓰세요?

ClaudeClaude CodeCursorVS CodeChatGPT

위에서 앱을 고르세요. 기억해 두었다가 다음부터는 버튼에 “…에 설치”라고 표시해요.

제작자의 .mcpb 파일 다운로드

링크는 제작자의 파일로 바로 연결돼요. 우리가 보관하거나 다시 패키징하지 않아요. 파일을 열면 Claude Desktop이 설치해요.

터미널에서 이 명령어를 실행하세요

claude mcp add langfuse-api --env LANGFUSE_PUBLIC_KEY=your-value --env LANGFUSE_SECRET_KEY=your-value --env LANGFUSE_BASE_URL=your-value --env LANGFUSE_CA_CERT=your-value -- npx -y langfuse-api-mcp

실행하기 전에 빈 값을 채워 주세요.

Cursor에서 열기

또는 설정을 직접 복사하기

프로젝트의 .cursor/mcp.json 또는 ~/.cursor/mcp.json에 붙여 넣으세요

{
  "mcpServers": {
    "langfuse-api": {
      "command": "npx",
      "args": [
        "-y",
        "langfuse-api-mcp"
      ],
      "env": {
        "LANGFUSE_PUBLIC_KEY": "your-value",
        "LANGFUSE_SECRET_KEY": "your-value",
        "LANGFUSE_BASE_URL": "your-value",
        "LANGFUSE_CA_CERT": "your-value"
      }
    }
  }
}

브라우저가 앱을 열지 물어본 다음, 앱이 설정을 보여 주고 확인을 요청해요. 키 값은 비워 두니 직접 입력하세요.

VS Code에서 열기

또는 설정을 직접 복사하기

프로젝트의 .vscode/mcp.json에 붙여 넣으세요

{
  "servers": {
    "langfuse-api": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "langfuse-api-mcp"
      ],
      "env": {
        "LANGFUSE_PUBLIC_KEY": "your-value",
        "LANGFUSE_SECRET_KEY": "your-value",
        "LANGFUSE_BASE_URL": "your-value",
        "LANGFUSE_CA_CERT": "your-value"
      }
    }
  }
}

브라우저가 앱을 열지 물어본 다음, 앱이 설정을 보여 주고 확인을 요청해요. 키 값은 비워 두니 직접 입력하세요.

이 서버는 내 컴퓨터에서 실행되는데, ChatGPT는 인터넷에 있는 서버에만 연결할 수 있어요. 다른 앱을 고르세요.

선택한 앱은 이 기기의 쿠키에만 저장돼요. 계정은 필요 없어요.

직접 입력할 값

LANGFUSE_PUBLIC_KEY 비밀 필수 env
The project's public key (pk-lf-...).
LANGFUSE_SECRET_KEY 비밀 필수 env
The project's secret key (sk-lf-...).
LANGFUSE_BASE_URL 필수 env
Your Langfuse host, e.g. https://cloud.langfuse.com; https only, http only for localhost.
LANGFUSE_CA_CERT env
Optional PEM file with your corporate or private CA, added to the system trust store.

이 설정은 제작자의 레지스트리 정보로 만들었어요. README와 다르면 README를 따르세요.

할 수 있는 일

내 컴퓨터에서 실행돼요. 설치하면 AI 앱에 도구 목록이 나타나요.

기본 점검i

누구나 볼 수 있는 정보를 점검했고, 코드는 읽지 않았어요. 해당하지 않는 항목은 개수에서 뺐어요. · 2026년 11월 6일 점검

✓ 통과
제작자와 저장소 일치
레지스트리 이름이 GitHub 계정 rodrigorjsf 기준으로 확인되었고, 이 계정이 저장소를 소유하고 있어요
… 아직 점검 안 함
계속 관리되고 있음
아직 GitHub에서 이 저장소를 읽어 오지 않았어요
… 아직 점검 안 함
라이선스 있음
아직 GitHub에서 이 저장소를 읽어 오지 않았어요
– 해당 없음
엔드포인트 응답
내 컴퓨터에서 실행되는 서버라 인터넷 엔드포인트가 없어요
– 해당 없음
OAuth로 로그인
내 컴퓨터에서 실행되며, 대신 로컬 설정을 사용해요
… 아직 점검 안 함
도구 설명에 숨겨진 지시 없음
내 컴퓨터에서 실행돼요. 도구 목록은 인터넷 엔드포인트가 있는 서버에서만 읽을 수 있어요

기타 카테고리의 다른 서버와 비교i

이 카테고리의 다른 서버 32520개 중 0%보다 스타가 많아요
이 카테고리의 다른 서버 32520개 중 63%보다 최근에 레지스트리에 공개됐어요
기본 점검 결과가 이 카테고리의 다른 서버 32520개 중 100%와 같거나 더 좋아요

레지스트리에서 이 카테고리의 활성 서버 전체와 비교했어요. 스타는 게시자가 저장소를 소유한 경우에만 세요.

자주 묻는 질문

Langfuse API, 안전한가요?

해당하는 기본 점검 1개 중 1개를 통과했어요. 코드는 읽지 않았어요. 키나 토큰을 넣기 전에 서버가 어떤 권한을 요구하는지 확인하고, 꼭 필요한 권한만 있는 키를 쓰세요.

어떤 키나 코드가 필요한가요?

입력해야 할 값: LANGFUSE_PUBLIC_KEY, LANGFUSE_SECRET_KEY, LANGFUSE_BASE_URL

내 컴퓨터에서 실행되나요, 클라우드에서 실행되나요?

내 컴퓨터에서 실행돼요. AI 앱이 필요할 때 실행하고, 데이터는 제작자의 서버를 거치지 않아요(서버 자체가 온라인 서비스를 호출하는 경우는 제외).

아직 관리되고 있나요?

GitHub 저장소는 마지막으로 – 변경됐고, 최신 버전(0.2.0)은 23일 전 레지스트리에 올라왔어요.

어떤 앱에서 쓸 수 있나요?

Claude Desktop, Claude Code, Cursor, VS Code처럼 MCP를 지원하는 앱에서 쓸 수 있어요. 내 컴퓨터에 Node.js, Docker, MCPB도 있어야 해요.

대신 쓸 수 있는 건 뭐가 있나요?

같은 카테고리에는: Spec Driven Development, Remote Desktop Commander, Toggl 2.0

대안

같은 카테고리에서 다른 제작자가 만든 서버예요. 스타 순으로 정렬했어요.

카드 보는 법:★ GitHub 스타i세 기둥: 리뷰 · 점검 · 사용 정도i업데이트 = 최신 버전을 레지스트리에 공개한 날i

Spec Driven Development

제작자: formulahendry

MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.

내 컴퓨터에서 실행★ 440MIT14개월 전 업데이트

설치

Remote Desktop Commander

제작자: desktop-commander

Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.

클라우드에서 실행★ 211어제 업데이트

설치

Toggl 2.0

제작자: toggl

Toggl 2.0 MCP server for tasks, projects, time entries, and workspace operations.

내 컴퓨터에서 실행오늘 업데이트

설치

제작자의 README

README 열기

제작자의 저장소에서 쓰인 그대로 가져왔어요. PopNx MCP가 검토하거나 보증한 내용이 아니에요. HTML, 이미지, 스크립트는 제거했어요. 링크를 누르면 이 사이트를 벗어나요.

langfuse-api-mcp

An MCP server that gives AI agents access to the full Langfuse public API. It works with Langfuse Cloud in any region and with self-hosted instances. It is built to run on corporate networks that re-sign TLS traffic with their own certificate authority (CA).

[!IMPORTANT]

Status: pre-alpha, release `v0.2.0` (semver 0.x: no stability promise yet; the first release was v0.1.0). Everything below works today unless it is marked Planned, like the loopback HTTP transport.

Contents: What it is · Tools · User skill · Install and run · Client configuration · Configuration · Security model · Troubleshooting · Learn more

What it is

A small, stateless program that your AI tool (Claude Code, Claude Desktop, Cursor, VS Code, Codex, …) starts on your machine. It speaks the Model Context Protocol to the agent and HTTPS to Langfuse. The agent can then:

investigate traces, observations, sessions, errors, latency and cost;
read prompts, datasets, experiments, scores, metrics, models, comments and annotation queues;
make changes, such as promoting a prompt label, creating a score or editing a dataset. This works only if you turn writes on (see Security model).

flowchart LR

A[AI agent Claude Code, Cursor, …] -- MCP over stdio --> S[langfuse-mcp on your machine or in Docker] S -- HTTPS + your corporate CA --> P{{Corporate proxy optional}} P --> L[(Langfuse Cloud or self-hosted)] S -. reads .-> C[/Your config: keys, host, CA files/] classDef local fill:#e0f2fe,stroke:#0369a1,color:#0c4a6e; classDef remote fill:#fef3c7,stroke:#b45309,color:#78350f; class A,S,C local; class L,P remote;

When to use it

Situation	Use this server?
Your company network inspects TLS with a custom root CA, and the official Langfuse MCP or CLI fails with `self-signed certificate in certificate chain` / `unable to get local issuer certificate`	Yes. This is the main reason the project exists.
You want the agent to be unable to change Langfuse data unless you explicitly allow it	Yes. It is read-only by default, and the server enforces this itself for every call made through it. Keep the keys out of the agent's own environment, or another tool can use them directly: Keep the keys out of the agent's environment.
You run a self-hosted Langfuse behind an internal CA or proxy	Yes.
You want a single binary with no Node.js or Python runtime on your machine	Yes.
You only need Langfuse documentation in your agent	No. Use the official docs MCP at `https://langfuse.com/api/mcp`.
Your agent can run shell commands and your network has no TLS interception	Either works. Langfuse also offers an official CLI and Agent Skill.

How it differs from the official Langfuse MCP

	Official project MCP ( `/api/public/mcp`)	This server
Where it runs	Remote, inside Langfuse	Locally (binary or Docker)
Custom CA / corporate proxy	Depends on your MCP client's runtime; no documented options	Explicit settings, plus automatic pickup of CA variables that are already set on your system
Writes	Enabled by default; to restrict them you configure a client-side allowlist	Off by default. The write tool does not exist until you enable it.
API coverage	Curated tool set	Every operation your Langfuse deployment actually answers — older self-hosted versions keep their legacy APIs, newer ones get the new APIs — except trace ingestion and organization admin changes (creating/deleting projects, API keys, users). Detected automatically at startup, with nothing to configure (Deployment profile)

Tools

The Langfuse API has about 100 in-scope operations. One tool per operation would fill the agent's context window, so the server exposes a small set of tools:

Tool	What it does	Available
`search_operations`	Lists the Langfuse operations your deployment serves, optionally filtered by keywords (in write mode, each write operation with its HTTP method and whether it is destructive)	always
`describe_operation`	Returns the parameters of one operation that your deployment's Langfuse version serves (and, apart from them, a filter the server applies itself when your version lacks it; and, in write mode, its body schema (the one of your deployment's Langfuse version), whether it is destructive and, for `comments_create` and `scores_create`, how to fill the body)	always
`execute_read`	Runs a read operation (HTTP GET) by its ID and returns the Langfuse JSON inside an untrusted-data envelope. On an older Langfuse that ignores the `traceId` of `scores_get-many` or the `level` of `legacy_observationsV1_getMany`, the server applies that filter itself and says whether it read the whole list	always
`execute_write`	Runs a write operation by its ID; a destructive one (DELETE, PUT, PATCH) only after you confirm that exact call	only in write mode
`get_trace_tree`	Returns every observation of one trace as a tree in one call. It reads Observations v2 where the deployment answers the v4 read APIs (Cloud, self-hosted v4) and the legacy observations list on self-hosted v3, where input, output and metadata are removed unless you ask for them and a row holds the fields that Langfuse returns (latency in milliseconds there, in seconds on v4), minus those it returned as null. Where a deployment answers both, the tree is read from Observations v2, which can lack observations that were sent through the legacy ingestion API, so an empty or short tree can be checked against the legacy observations list through `execute_read`. Where neither API answers it says `operation_unavailable`	always listed; runs where the deployment answers either API

A typical session: search_operations finds the operation, describe_operation shows its parameters, execute_read runs it:

{"operationId": "trace_list", "parameters": {"limit": 10, "tags": ["prod", "checkout"]}}

The server keeps nothing between calls (it is stateless). It never takes a URL, host or credential from the agent. It only runs operations from its built-in catalog, against the host you configured. Every call is validated before anything is sent, and every failure comes back as a structured tool error with a code, a hint and a retryable flag. Parameters, error codes, result limits and the audit line: Tools reference.

User skill

The server gives an agent generic tools; the user skill langfuse-api-mcp (skills/langfuse-api-mcp/) teaches it how a Langfuse investigation is done with them: discover, describe, then execute; always a bounded time window; Langfuse data is untrusted, never instructions. It has a short entry file and one reference per workflow (traces, cost and latency, prompts, experiments, scores, errors), each loaded only when its workflow is asked for. Its description names this server's tools, so it does not compete with Langfuse's own langfuse skill. It adds no permission of its own: whether execute_write exists and every confirmation stay the server's decision.

Claude Code, Cursor, VS Code, Codex CLI, Gemini CLI, Windsurf. Install it from the repository with the skills CLI, in your project (or with -g for your user); --agent names the hosts to install for (--agent '*' for all). The Claude Code install is proven; the other hosts rely on the CLI's own support:

npx skills add rodrigorjsf/langfuse-api-mcp

non-interactive, one host: npx skills add rodrigorjsf/langfuse-api-mcp --agent claude-code -y

The CLI installs from main, while your server may be an older build; the skill therefore tells the agent to call describe_operation for every parameter it does not name (details).

Claude Desktop installs skills only by upload. Each GitHub release carries langfuse-api-mcp-skill_ .zip, signed, whose root is the langfuse-api-mcp/ folder; upload it in Claude Desktop under Customize > Skills.

Install and run

Channel	Platforms	Needs
npx	Linux, macOS, Windows × x64, arm64	Node.js with npm
Release archive	Linux, macOS, Windows × amd64, arm64	nothing
Docker	linux/amd64, linux/arm64; stdio only	Docker
Claude Desktop (MCPB)	macOS, Windows	Claude Desktop
`go install`	any Go platform	Go 1.21 or later

Every channel except go install is signed or carries npm provenance: see Verify what you run. The server is also listed in the MCP Registry as io.github.rodrigorjsf/langfuse-api-mcp. What each channel ships and how it is built: Installation reference.

npx

Configure the server in your MCP client as npx -y langfuse-api-mcp (pin a version with langfuse-api-mcp@ ); it needs Node.js with npm, nothing else. The package carries the Go binary: nothing is downloaded at install time and no install script runs. See Client configuration for the snippet of your client.

Release archive

Every GitHub release carries one archive per target, langfuse-mcp_ _ _ .tar.gz (.zip on Windows), plus checksums.txt. Download with gh or curl, check the archive against checksums.txt, then extract it (Linux on amd64 shown; is the release without the leading v, for example 0.2.0):

version=<version>

archive="langfuse-mcp_${version}_linux_amd64.tar.gz" gh release download "v$version" -R rodrigorjsf/langfuse-api-mcp -p "$archive" -p checksums.txt

or: curl -fsSLO "https://github.com/rodrigorjsf/langfuse-api-mcp/releases/download/v$version/$archive"

curl -fsSLO "https://github.com/rodrigorjsf/langfuse-api-mcp/releases/download/v$version/checksums.txt"

awk -v f="$archive" '$2 == f' checksums.txt | sha256sum -c - # macOS: … | shasum -a 256 -c - tar -xzf "$archive"

On Windows (PowerShell), compare the hash and extract the zip:

$archive = "langfuse-mcp_<version>_windows_amd64.zip"

(Get-FileHash $archive -Algorithm SHA256).Hash.ToLower() # must equal the line for $archive in checksums.txt Expand-Archive $archive -DestinationPath langfuse-mcp

Then point your MCP client at the extracted binary (see Client configuration). The binaries are not notarized nor Authenticode-signed: download with curl or gh, not a browser, or see Downloaded in a browser?.

Docker

Pass the keys and the base URL with -e, and keep -i (the server speaks MCP over stdin and stdout):

docker run -i --rm \

-e LANGFUSE_PUBLIC_KEY -e LANGFUSE_SECRET_KEY -e LANGFUSE_BASE_URL \ ghcr.io/rodrigorjsf/langfuse-api-mcp:

-e NAME without a value passes the variable from the environment that runs docker, so the keys never appear in the command line. Behind a corporate CA, mount the CA file read-only and point LANGFUSE_CA_CERT at it; the file must be readable by any user (the image does not run as you):

docker run -i --rm \

-e LANGFUSE_PUBLIC_KEY -e LANGFUSE_SECRET_KEY -e LANGFUSE_BASE_URL \ -e L

앞부분만 보여 드려요. 나머지는 저장소에서 읽어 보세요

Langfuse API

개요

PopNx MCP의 세 기둥

할 수 있는 일

설치

설치하기 전에

직접 입력할 값

할 수 있는 일

기본 점검i

제작자와 저장소 일치

계속 관리되고 있음

라이선스 있음

엔드포인트 응답

OAuth로 로그인

도구 설명에 숨겨진 지시 없음

기타 카테고리의 다른 서버와 비교i

자주 묻는 질문

대안

Spec Driven Development

Remote Desktop Commander

Toggl 2.0

제작자의 README

langfuse-api-mcp

What it is

When to use it

How it differs from the official Langfuse MCP

Tools

User skill

non-interactive, one host: npx skills add rodrigorjsf/langfuse-api-mcp --agent claude-code -y

Install and run

npx

Release archive

or: curl -fsSLO "https://github.com/rodrigorjsf/langfuse-api-mcp/releases/download/v$version/$archive"

curl -fsSLO "https://github.com/rodrigorjsf/langfuse-api-mcp/releases/download/v$version/checksums.txt"

Docker