--- title: "Connect ConfigCat and Langfuse - APIANT.ai" description: "When \"Feature Flag & Setting value changed\" fires in ConfigCat, your agent runs \"Add Comment\" in Langfuse." canonical: "https://apiant.ai/connect/configcat-to-langfuse" --- # Connect ConfigCat and Langfuse When **Feature Flag & Setting value changed** fires in [ConfigCat](https://apiant.ai/connections/configcat), your agent runs **Add Comment** in [Langfuse](https://apiant.ai/connections/langfuse), or **New Trace** in Langfuse to **Add Config** in ConfigCat. Describe the whole flow and it is built, tested on every scenario and kept running. ConfigCat **1** trigger ConfigCat **28** actions Langfuse **1** trigger Langfuse **14** actions What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it. ## What do you want ConfigCat and Langfuse 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 ConfigCat and Langfuse can do together ### From ConfigCat to Langfuse - When **Feature Flag & Setting value changed** in ConfigCat then **Add Comment** in Langfuse - When **Feature Flag & Setting value changed** in ConfigCat then **Add Dataset Item** in Langfuse ### From Langfuse to ConfigCat - When **New Trace** in Langfuse then **Add Config** in ConfigCat - When **New Trace** in Langfuse then **Add Flag** in ConfigCat 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 ConfigCat and Langfuse ## Triggers and actions 2 triggers · 42 actions - Trigger **Feature Flag & Setting value changed** Triggers when a ConfigCat Feature Flag or Setting value is changed. - Action **Add Config** Create a new config within a product. - Action **Add Flag** Create a new feature flag or setting within a config. - Action **Add Segment** Create a new segment within a product. - Action **Add Tag** Create a new tag within a product. - Action **Delete Config** Delete a config. - Action **Delete Flag** Delete a feature flag or setting. - Action **Delete Segment** Delete a segment. - Action **Delete Tag** Delete a tag. - Action **Get Config** Get a single config by id. - Action **Get Environment** Get a single environment by id. - Action **Get Flag** Get a single feature flag or setting by id. - Action **Get Flag value** Get the current served value of a feature flag or setting in an environment. - Action **Get Product** Get a single product by id. - Action **Get Segment** Get a single segment by id. - Action **Get Tag** Get a single tag by id. - Action **List Configs** List all configs (SDK config bundles) within a product. - Action **List Environments** List all environments within a product. - Action **List Flags** List all feature flags and settings within a config. - Action **List Organizations** List all organizations the caller has access to. - Action **List Products** List all products the caller has access to. - Action **List Segments** List all segments within a product. - Action **List Tags** List all tags within a product. - Action **Update Config** Update a config's name/description/order. - Action **Update Environment** Update an environment's name/color/description. - Action **Update Flag** Update a feature flag or setting's metadata (name, hint, tags). - Action **Update Flag value** Update (turn on/off, change served value or targeting) a feature flag or setting's value in an environment. - Action **Update Segment** Update a segment's name/rules. - Action **Update Tag** Update a tag's name/color. - 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). ## Each app on its own - [ **ConfigCat** 10 minutes trainable feature flag and configuration management service with unlimited team size, awesome...](https://apiant.ai/connections/configcat) - [ **Langfuse** Langfuse is an open-source LLM engineering platform (GitHub) that helps teams collaboratively debug...](https://apiant.ai/connections/langfuse) Reviews ## What our customers say ## More from ConfigCat - [ **ConfigCat to Flokzu** Flokzu is a powerful cloud BPM suite, made agile & friendly!](https://apiant.ai/connect/configcat-to-flokzu) - [ **ConfigCat to Geocode.xyz** Geocode.xyz is a worldwide geocoding service.](https://apiant.ai/connect/configcat-to-geocode-xyz) - [ **ConfigCat to New Relic Insights** New Relic Insights is a real-time analytics platform that collects metrics directly from your live...](https://apiant.ai/connect/configcat-to-new-relic-insights) - [ **ConfigCat to HubSpot** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/configcat-to-hubspot) - [ **ConfigCat to Salesforce** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/configcat-to-salesforce) - [ **ConfigCat to Slack** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/configcat-to-slack) ## More into Langfuse - [ **Salesforce to Langfuse** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/salesforce-to-langfuse) - [ **Google Drive to Langfuse** Google Drive is a cloud storage solution for uploading, sharing, and collaborating on files across devices...](https://apiant.ai/connect/google-drive-to-langfuse) - [ **HubSpot to Langfuse** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-langfuse) - [ **Slack to Langfuse** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/slack-to-langfuse) - [ **Google Sheets to Langfuse** Google Sheets is Google's online spreadsheet app for creating, editing and sharing spreadsheets.](https://apiant.ai/connect/google-sheets-to-langfuse) - [ **Gmail to Langfuse** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/gmail-to-langfuse) Questions ## ConfigCat and Langfuse, answered ### ### What can start an automation from ConfigCat? Any of ConfigCat's 1 trigger in the catalog, including Feature Flag & Setting value changed. Describe the moment in plain language and your agent picks the right one. ### ### What can your agent do in Langfuse when something happens in ConfigCat? Any of Langfuse's 14 actions, including Add Comment, Add Dataset, Add Dataset Item and Add Prompt. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can it also run from Langfuse to ConfigCat? Yes. When something happens in Langfuse, your agent can act in ConfigCat too. This page covers both directions: Langfuse's triggers and ConfigCat's actions are listed here as well. ### ### Do I have to build a connector for ConfigCat or Langfuse? 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 ConfigCat and Langfuse 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.