---
title: "Connect Langfuse and Runn - APIANT.ai"
description: "When \"New Trace\" fires in Langfuse, your agent runs \"Create Client\" in Runn, or \"New Assignment\" in Runn to \"Add Comment\" in Langfuse."
canonical: "https://apiant.ai/connect/langfuse-to-runn"
---

# Connect Langfuse and Runn

When **New Trace** fires in [Langfuse](https://apiant.ai/connections/langfuse), your agent runs **Create Client** in [Runn](https://apiant.ai/connections/runn), or **New Assignment** in Runn to **Add Comment** in Langfuse. Describe the whole flow and it is built, tested on every scenario and kept running.

Langfuse **1** trigger Langfuse **14** actions Runn **11** triggers Runn **13** actions

What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it.

## What do you want Langfuse and Runn to do together?

Give your AI client this address.

`https://mcp.apiant.ai`

One connection does both: ask your client to act in an app once, or have it build an automation that keeps running. Any client that takes a remote MCP server. Nothing to install. Create your free account, then sign in once in your browser.

### Set it up in your client

### Claude Code

Run this in the directory you want to work in.

`claude mcp add --transport http -s project apiant-ai https://mcp.apiant.ai`

Start Claude Code there, approve the server, and sign in in the browser page it opens.

[Claude Code guide (opens in a new tab)](https://apiant.ai/docs/mcp/claude-code)

### Claude, web and desktop

Open Customize, then Connectors, then Add custom connector, and paste the address. On Team and Enterprise an owner adds it first.

[Setup guide (opens in a new tab)](https://apiant.ai/docs/mcp)

### Cursor

Add the address to your MCP configuration as a server URL. Cursor signs you in in your browser.

[Setup guide (opens in a new tab)](https://apiant.ai/docs/mcp)

### Zed

Open Settings, then AI, then MCP Servers, then Add Server, then Add Remote Server.

[Setup guide (opens in a new tab)](https://apiant.ai/docs/mcp)

### Codex and the ChatGPT desktop app

Open Settings, then MCP servers, then Add server, and choose Streamable HTTP. From the terminal, Codex takes the address with its own add command and then signs you in.

[Setup guide (opens in a new tab)](https://apiant.ai/docs/mcp)

### Any other MCP client

Paste the address where the client asks for a remote MCP server URL, and name the server apiant-ai where it lets you. APIANT's skills reach the client over the same connection.

[Setup guide (opens in a new tab)](https://apiant.ai/docs/mcp)

Example flows

## What Langfuse and Runn can do together

### From Langfuse to Runn

- When **New Trace** in Langfuse then **Create Client** in Runn
- When **New Trace** in Langfuse then **Create Project** in Runn

### From Runn to Langfuse

- When **New Assignment** in Runn then **Add Comment** in Langfuse
- When **New Client** in Runn then **Add Dataset Item** in Langfuse

Starting points drawn from the triggers and actions in the catalog today. Describe the flow you need, at any depth, and your agent builds it and tests every scenario before it ships.

Everything your agent can do with Langfuse and Runn

## Triggers and actions 12 triggers · 27 actions

- Trigger

**New Trace**

Polling trigger: fires for newly created traces (dedup by trace id / timestamp).

- Action

**Add Comment**

Add a comment to a trace/observation/session/prompt object.

- Action

**Add Dataset**

Create a new dataset.

- Action

**Add Dataset Item**

Create an item (input/expected_output/metadata) in a dataset.

- Action

**Add Prompt**

Create a new prompt version (text or chat).

- Action

**Add Score**

Create a score attached to a trace/observation/session (numeric, categorical, or boolean).

- Action

**Delete Trace**

Delete a trace by id.

- Action

**Get Project**

Reads the Langfuse project that the connection's project-scoped API key belongs to.

- Action

**Get Prompt**

Get a prompt by name (and optional version/label).

- Action

**Get Trace**

Get a single trace by id, including nested observations/scores.

- Action

**List Dataset Items**

List items in a dataset.

- Action

**List Datasets**

List all datasets in the project.

- Action

**List Prompts**

List all prompts in the project.

- Action

**List Scores**

List scores with optional filters.

- Action

**List Traces**

List traces with optional filters (user, session, tags, timerange).

- Trigger

**New Assignment**

Triggers when a new assignment is created in Runn, optionally limited to one person, role or project.

- Trigger

**New Client**

Triggers when a new client is created in Runn.

- Trigger

**New Contract**

Triggers when a new contract is added to a person in Runn.

- Trigger

**New Holiday Group**

Triggers when a new holiday group is added to your Runn account.

- Trigger

**New Person**

Triggers when a new person is added in Runn.

- Trigger

**New Project**

Triggers when a new project is created in Runn.

- Trigger

**New Rate Card**

Triggers when a new rate card is created in Runn.

- Trigger

**New Role**

Triggers when a new role is created in Runn.

- Trigger

**New Skill**

Triggers when a new skill is created in Runn.

- Trigger

**New Team**

Triggers when a new team is created in Runn.

- Trigger

**New User**

Triggers when a new user is added to your Runn account.

- Action

**Assign a Manager**

Adds a Runn user as a manager of a person or placeholder, keeping any managers they already have. Returns the updated person.

- Action

**Create Assignment**

Creates an assignment that schedules a person or placeholder on a project in a role for a date range, with the same number of minutes on each working day.

- Action

**Create Client**

Creates a new client in Runn with a name and, optionally, a website and links to external systems.

- Action

**Create Contract**

Adds a new contract to a person in Runn, setting their role, dates, employment type, cost and working hours.

- Action

**Create Person**

Creates a person in Runn, along with their first contract (role, employment type, cost and working hours).

- Action

**Create Project**

Creates a project in Runn for a client, optionally setting its budget, pricing model, rate card, team and managers, or duplicating it from an existing template project.

- Action

**Create Role**

Creates a role in Runn, with optional default hourly cost, standard charge-out rate and external references.

- Action

**Create Skill**

Creates a new skill in Runn that can be assigned to people and placeholders.

- Action

**Create Timesheet (Actual)**

Records the time a person actually spent on a project for one day, creating the actual or overwriting an existing one for the same date, person, project, role and workstream.

- Action

**Find Client**

Returns Runn clients whose name contains the text you enter (case-insensitive), with each client's id, website, archived status and external references.

- Action

**Find Person**

Finds people in Runn by email, first name, last name or external id, returning every match and the first matching person.

- Action

**Find Project**

Returns the projects whose name contains the text you give (ignoring case), optionally narrowed by external ID or last-modified date.

- Action

**Find Role**

Finds roles in Runn whose name contains the text you give, ignoring case. Returns the matching roles, how many matched, and the first match.

## Each app on its own

- [ **Langfuse** Langfuse is an open-source LLM engineering platform (GitHub) that helps teams collaboratively debug...](https://apiant.ai/connections/langfuse)
- [ **Runn** Runn is a resource management platform that helps teams align people, projects, and strategy with real-time...](https://apiant.ai/connections/runn)

Reviews

## What our customers say

## More from Langfuse

- [ **Langfuse to 5DollarFootball** Football fixtures, results, standings and historical odds with corner and card lines](https://apiant.ai/connect/langfuse-to-5dollarfootball)
- [ **Langfuse to Cloudflare Trace** Cloudflare Trace is a free JSON wrapper over Cloudflare's edge trace endpoint that reports what Cloudflare...](https://apiant.ai/connect/langfuse-to-cloudflare-trace)
- [ **Langfuse to PaperClean** Clean document photos for printing, remove shadows, fix lighting](https://apiant.ai/connect/langfuse-to-paperclean)
- [ **Langfuse to Postman** Postman is a platform for building and testing APIs.](https://apiant.ai/connect/langfuse-to-postman)
- [ **Langfuse to Rendobar** Hosted media processing over REST: transcode, caption, watermark video](https://apiant.ai/connect/langfuse-to-rendobar)
- [ **Langfuse to Runpod** Cloud GPU platform for renting on-demand compute to train and deploy AI models, including serverless...](https://apiant.ai/connect/langfuse-to-runpod)

## More into Runn

- [ **HubSpot to Runn** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-runn)
- [ **Google Sheets to Runn** Google Sheets](https://apiant.ai/connect/google-sheets-to-runn)
- [ **Gmail to Runn** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/gmail-to-runn)
- [ **Google Calendar to Runn** Google Calendar is a time management tool providing scheduling features, event reminders, and integration...](https://apiant.ai/connect/google-calendar-to-runn)
- [ **Google Drive to Runn** Google Drive is a cloud storage solution for uploading, sharing, and collaborating on files across devices...](https://apiant.ai/connect/google-drive-to-runn)
- [ **Mailchimp to Runn** Mailchimp marketing automation and email platform.](https://apiant.ai/connect/mailchimp-to-runn)

Questions

## Langfuse and Runn, answered

###

### What can start an automation from Langfuse?

Any of Langfuse's 1 trigger in the catalog, including New Trace. Describe the moment in plain language and your agent picks the right one.

###

### What can your agent do in Runn when something happens in Langfuse?

Any of Runn's 13 actions, including Create Assignment, Create Client, Create Contract and Create Person. Your agent maps the data both ways and tests every scenario before it ships.

###

### Can it also run from Runn to Langfuse?

Yes. When something happens in Runn, your agent can act in Langfuse too. This page covers both directions: Runn's triggers and Langfuse's actions are listed here as well.

###

### Do I have to build a connector for Langfuse or Runn?

No. Both are in the catalog with their triggers and actions. You describe the automation; your agent builds it, tests every scenario and keeps it running.

###

### Can my AI client use Langfuse and Runn without building an automation?

Yes. With your AI client connected to APIANT, ask it to do something in either app once and it runs that action on the spot. Ask for an automation and your agent builds it, tests every scenario and keeps it running. One connection covers both.

###

### What happens when something fails?

Your agent works that out for you. It plans the failure paths along with the happy path, then tests every scenario before it ships.

###

### Is there a free plan?

Yes. Every plan includes the agent, including free, and building from your own AI client spends no assistant credits.
