--- title: "Connect Langfuse to Cirkus - APIANT.ai" description: "When \"New Trace\" fires in Langfuse, your agent runs \"Add contact\" in Cirkus. Describe the whole flow and it is built, tested on every scenario and kept running." canonical: "https://apiant.ai/connect/langfuse-to-cirkus" --- # Connect Langfuse to Cirkus When **New Trace** fires in [Langfuse](https://apiant.ai/connections/langfuse), your agent runs **Add contact** in [Cirkus](https://apiant.ai/connections/cirkus). Describe the whole flow and it is built, tested on every scenario and kept running. Langfuse **1** trigger Langfuse **14** actions Cirkus **11** 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 Cirkus 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 can start in Cirkus - When **New Trace** in Langfuse then **Add contact** in Cirkus - When **New Trace** in Langfuse then **Update contact** in Cirkus 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 Cirkus ## Triggers and actions 1 trigger · 25 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). - Action **Add booking** Creates a new booking in Cirkus, optionally scheduling people or resources on it and linking it to projects, subprojects and tasks. - Action **Add company** Creates a new company in a Cirkus workspace. - Action **Add contact** Creates a new contact in a Cirkus workspace, optionally linked to a company. - Action **Create Calendar Event** Adds a calendar event to a Cirkus booking, scheduling a person or resource for a given activity between a start and end time. - Action **Create Project** Creates a new project in a Cirkus workspace, optionally linked to a company, contact or project template. - Action **Delete project** Deletes a Cirkus project. - Action **Get project** Returns a Cirkus project by its ID, including its dates, owner, linked company and contact, task counts and custom field values. - Action **Update booking** Updates an existing Cirkus booking — its name, description, color, schedule status, booked events, linked projects and tasks, and custom fields. Fields left blank are not changed. - Action **Update company** Updates an existing company in Cirkus — its name, description, active status, template link and custom field values. Fields left blank are not changed. - Action **Update contact** Updates an existing contact in Cirkus, such as its name, email, phone, company or active status, and returns the updated contact. - Action **Update Project** Updates an existing Cirkus project, such as its name, dates, owner, linked company or contact, status and custom fields. Fields left blank keep their current values. ## 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) - [ **Cirkus** Cirkus is a task and project management software built for media and post-production teams to organize work...](https://apiant.ai/connections/cirkus) 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 Cirkus - [ **HubSpot to Cirkus** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-cirkus) - [ **Salesforce to Cirkus** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/salesforce-to-cirkus) - [ **Slack to Cirkus** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/slack-to-cirkus) - [ **Google Sheets to Cirkus** Google Sheets](https://apiant.ai/connect/google-sheets-to-cirkus) - [ **Gmail to Cirkus** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/gmail-to-cirkus) - [ **Google Calendar to Cirkus** Google Calendar is a time management tool providing scheduling features, event reminders, and integration...](https://apiant.ai/connect/google-calendar-to-cirkus) Questions ## Langfuse and Cirkus, 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 Cirkus when something happens in Langfuse? Any of Cirkus's 11 actions, including Create Calendar Event, Create Project, Update booking and Update company. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can it also run from Cirkus to Langfuse? Cirkus has no triggers in the catalog today, so automations start in Langfuse. If you need the other direction, ask: your agent reads Cirkus's API documentation and adds it. ### ### Do I have to build a connector for Langfuse or Cirkus? 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 Cirkus 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.