--- title: "Connect Langfuse to mailfloss - APIANT.ai" description: "When \"New Trace\" fires in Langfuse, your agent runs \"Add batch of emails for verification\" in mailfloss." canonical: "https://apiant.ai/connect/langfuse-to-mailfloss" --- # Connect Langfuse to mailfloss When **New Trace** fires in [Langfuse](https://apiant.ai/connections/langfuse), your agent runs **Add batch of emails for verification** in [mailfloss](https://apiant.ai/connections/mailfloss). Describe the whole flow and it is built, tested on every scenario and kept running. Langfuse **1** trigger Langfuse **14** actions mailfloss **9** 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 mailfloss 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 mailfloss - When **New Trace** in Langfuse then **Add batch of emails for verification** in mailfloss - When **New Trace** in Langfuse then **Add Email** in mailfloss 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 mailfloss ## Triggers and actions 1 trigger · 23 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 batch of emails for verification** Submits a batch of email addresses to mailfloss for asynchronous verification and returns the job id. - Action **Add data erasure request** Submits a GDPR/CCPA-style erasure request that permanently deletes the given email addresses from your mailfloss account. - Action **Add Email** Submits an email address to mailfloss for verification and returns the deliverability verdict. - Action **Cancel batch verification job** Cancels a running mailfloss batch verification job. Credits already consumed before the cancellation are not refunded. - Action **Get account details** Returns the details of the mailfloss account this connection belongs to. - Action **Get batch verification results** Retrieve the verification results of a finished mailfloss batch verification job. - Action **Get batch verification status** Reads the current progress of a mailfloss batch verification job: its state plus the running counts of imported, processed, passed and failed addresses. An error occurs if the job is not found. - Action **Get verification job** Fetches a verification job by ID, including its status and verdict counts. An error occurs if the job is not found. - Action **List verification jobs** Returns all verification jobs on the account, optionally filtered by source or status. ## 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) - [ **mailfloss** Mailfloss is an email verification platform where you can put your bulk email verification on autopilot and...](https://apiant.ai/connections/mailfloss) 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 mailfloss - [ **HubSpot to mailfloss** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-mailfloss) - [ **Salesforce to mailfloss** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/salesforce-to-mailfloss) - [ **Slack to mailfloss** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/slack-to-mailfloss) - [ **Google Sheets to mailfloss** Google Sheets is Google's online spreadsheet app for creating, editing and sharing spreadsheets.](https://apiant.ai/connect/google-sheets-to-mailfloss) - [ **Gmail to mailfloss** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/gmail-to-mailfloss) - [ **Google Calendar to mailfloss** Google Calendar is a time management tool providing scheduling features, event reminders, and integration...](https://apiant.ai/connect/google-calendar-to-mailfloss) Questions ## Langfuse and mailfloss, 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 mailfloss when something happens in Langfuse? Any of mailfloss's 9 actions, including Add batch of emails for verification, Add data erasure request, Add Email and Get account details. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can it also run from mailfloss to Langfuse? mailfloss has no triggers in the catalog today, so automations start in Langfuse. If you need the other direction, ask: your agent reads mailfloss's API documentation and adds it. ### ### Do I have to build a connector for Langfuse or mailfloss? 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 mailfloss 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.