--- title: "Connect Langfuse to Crossref Metadata Search - APIANT.ai" description: "When \"New Trace\" fires in Langfuse, your agent runs \"Find funders by query\" in Crossref Metadata Search." canonical: "https://apiant.ai/connect/langfuse-to-crossref-metadata-search" --- # Connect Langfuse to Crossref Metadata Search When **New Trace** fires in [Langfuse](https://apiant.ai/connections/langfuse), your agent runs **Find funders by query** in [Crossref Metadata Search](https://apiant.ai/connections/crossref-metadata-search). Describe the whole flow and it is built, tested on every scenario and kept running. Langfuse **1** trigger Langfuse **14** actions Crossref Metadata Search **6** 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 Crossref Metadata Search 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 Crossref Metadata Search - When **New Trace** in Langfuse then **Find funders by query** in Crossref Metadata Search - When **New Trace** in Langfuse then **Find works by query** in Crossref Metadata Search 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 Crossref Metadata Search ## Triggers and actions 1 trigger · 20 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 **Find funders by query** Search the Crossref Funder Registry for funding organizations matching a free-text query. - Action **Find works by query** Search Crossref's bibliographic metadata for works (articles, books, conference papers, etc.) matching a free-text query, with optional filters and sorting. - Action **Get funder** Retrieve metadata for a funding organization and its suborganizations by funder ID. - Action **Get journal** Retrieve information about a journal by its ISSN. - Action **Get member** Retrieve metadata for a Crossref member (publisher) by member ID. - Action **Get work by DOI** Retrieve full Crossref metadata for a single work given its DOI. ## 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) - [ **Crossref Metadata Search** Crossref is the DOI registration agency for scholarly publishing and exposes metadata for well over a...](https://apiant.ai/connections/crossref-metadata-search) 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 Crossref Metadata Search - [ **HubSpot to Crossref Metadata Search** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-crossref-metadata-search) - [ **Salesforce to Crossref Metadata Search** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/salesforce-to-crossref-metadata-search) - [ **Slack to Crossref Metadata Search** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/slack-to-crossref-metadata-search) - [ **Google Sheets to Crossref Metadata Search** Google Sheets is Google's online spreadsheet app for creating, editing and sharing spreadsheets.](https://apiant.ai/connect/google-sheets-to-crossref-metadata-search) - [ **Gmail to Crossref Metadata Search** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/gmail-to-crossref-metadata-search) - [ **Google Calendar to Crossref Metadata Search** Google Calendar is a time management tool providing scheduling features, event reminders, and integration...](https://apiant.ai/connect/google-calendar-to-crossref-metadata-search) Questions ## Langfuse and Crossref Metadata Search, 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 Crossref Metadata Search when something happens in Langfuse? Any of Crossref Metadata Search's 6 actions, including Find funders by query, Find works by query, Get funder and Get journal. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can it also run from Crossref Metadata Search to Langfuse? Crossref Metadata Search has no triggers in the catalog today, so automations start in Langfuse. If you need the other direction, ask: your agent reads Crossref Metadata Search's API documentation and adds it. ### ### Do I have to build a connector for Langfuse or Crossref Metadata Search? 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 Crossref Metadata Search 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.