--- title: "Connect Langfuse to Chainlink - APIANT.ai" description: "When \"New Trace\" fires in Langfuse, your agent runs \"Find price feed by pair\" in Chainlink." canonical: "https://apiant.ai/connect/langfuse-to-chainlink" --- # Connect Langfuse to Chainlink When **New Trace** fires in [Langfuse](https://apiant.ai/connections/langfuse), your agent runs **Find price feed by pair** in [Chainlink](https://apiant.ai/connections/chainlink). Describe the whole flow and it is built, tested on every scenario and kept running. Langfuse **1** trigger Langfuse **14** actions Chainlink **3** 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 Chainlink 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 Chainlink - When **New Trace** in Langfuse then **Find price feed by pair** in Chainlink - When **New Trace** in Langfuse then **Get price feed by contract address** in Chainlink 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 Chainlink ## Triggers and actions 1 trigger ยท 17 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 price feed by pair** Find a Chainlink price feed on a given network by its asset pair or name (e.g. ETH/USD), returning its proxy contract address and feed metadata. - Action **Get price feed by contract address** Get a single Chainlink price feed's metadata (decimals, heartbeat, asset class, deviation threshold) by its proxy contract address on a given network. - Action **List price feeds** List Chainlink price feeds and their contract addresses, decimals, and metadata for a given blockchain network. Source: reference-data-directory.vercel.app/feeds-{network}.json. ## 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) - [ **Chainlink** Chainlink is a decentralized oracle network that feeds off-chain data to smart contracts.](https://apiant.ai/connections/chainlink) 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 Chainlink - [ **Jira Software Cloud to Chainlink** Jira Software Cloud is a bug and issue tracking tool that allows software developers to manage product...](https://apiant.ai/connect/jira-software-cloud-to-chainlink) - [ **PhantomBuster to Chainlink** PhantomBuster is an automation tool for teams to extract lists of leads, enrich data and emails as well as...](https://apiant.ai/connect/phantombuster-to-chainlink) - [ **HubSpot to Chainlink** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-chainlink) - [ **Salesforce to Chainlink** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/salesforce-to-chainlink) - [ **Slack to Chainlink** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/slack-to-chainlink) - [ **Google Sheets to Chainlink** Google Sheets is Google's online spreadsheet app for creating, editing and sharing spreadsheets.](https://apiant.ai/connect/google-sheets-to-chainlink) Questions ## Langfuse and Chainlink, 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 Chainlink when something happens in Langfuse? Any of Chainlink's 3 actions, including Find price feed by pair, Get price feed by contract address and List price feeds. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can it also run from Chainlink to Langfuse? Chainlink has no triggers in the catalog today, so automations start in Langfuse. If you need the other direction, ask: your agent reads Chainlink's API documentation and adds it. ### ### Do I have to build a connector for Langfuse or Chainlink? 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 Chainlink 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.