--- title: "Connect Langfuse to Amplitude - APIANT.ai" description: "When \"New Trace\" fires in Langfuse, your agent runs \"Send event\" in Amplitude." canonical: "https://apiant.ai/connect/langfuse-to-amplitude" --- # Connect Langfuse to Amplitude When **New Trace** fires in [Langfuse](https://apiant.ai/connections/langfuse), your agent runs **Send event** in [Amplitude](https://apiant.ai/connections/amplitude). Describe the whole flow and it is built, tested on every scenario and kept running. Langfuse **1** trigger Langfuse **14** actions Amplitude **12** 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 Amplitude 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 Amplitude - When **New Trace** in Langfuse then **Send event** in Amplitude - When **New Trace** in Langfuse then **Batch upload events** in Amplitude 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 Amplitude ## Triggers and actions 1 trigger ยท 26 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 **Batch upload events** Sends a batch of events to Amplitude in one call. Use this when you have many events to record at once rather than one at a time. - Action **Export event data** Exports every event Amplitude recorded in a time window, as a zip archive of event data. - Action **Get cohort** Returns one behavioral cohort's details, including its name, size and when it was last recalculated. - Action **Get event segmentation** Counts how often an event happened over a date range, optionally split by a property or filtered to a segment of users. - Action **Get funnel analysis** Runs a funnel over a series of events and returns how many users reached each step and how many dropped off. - Action **Get retention analysis** Shows how many users came back and did something again after a starting event, over a date range. - Action **Get user properties** Looks a user up in Amplitude and returns what Amplitude knows about them, including their Amplitude ID. - Action **Group identify** Sets properties on a group in Amplitude, such as a company or team, so you can analyse behaviour by group. - Action **Identify user** Sets properties on a user in Amplitude without recording an event, so later events are attributed with the new details. - Action **List cohorts** Lists every behavioral cohort in the Amplitude project, with each cohort's name, size and owner. - Action **Send event** Records a single event in Amplitude for a user, with optional event and user properties. - Action **Upload cohort** Creates a cohort in Amplitude from a list of users you supply. ## 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) - [ **Amplitude** Amplitude is a product analytics service that makes it easier for companies to understand user behavior...](https://apiant.ai/connections/amplitude) 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 Amplitude - [ **Arxiv to Amplitude** Open-access repository API for searching and retrieving scholarly preprints in physics, math, CS, and...](https://apiant.ai/connect/arxiv-to-amplitude) - [ **Attio to Amplitude** Attio is the CRM of the future: data-driven, completely customizable and intuitively collaborative.](https://apiant.ai/connect/attio-to-amplitude) - [ **HubSpot to Amplitude** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-amplitude) - [ **Salesforce to Amplitude** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/salesforce-to-amplitude) - [ **Slack to Amplitude** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/slack-to-amplitude) - [ **Google Sheets to Amplitude** Google Sheets is Google's online spreadsheet app for creating, editing and sharing spreadsheets.](https://apiant.ai/connect/google-sheets-to-amplitude) Questions ## Langfuse and Amplitude, 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 Amplitude when something happens in Langfuse? Any of Amplitude's 12 actions, including Send event, Upload cohort, Batch upload events and Export event data. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can it also run from Amplitude to Langfuse? Amplitude has no triggers in the catalog today, so automations start in Langfuse. If you need the other direction, ask: your agent reads Amplitude's API documentation and adds it. ### ### Do I have to build a connector for Langfuse or Amplitude? 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 Amplitude 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.