Public API

/api/public

https://us.cloud.langfuse.com/api/public

https://cloud.langfuse.com/api/public

https://hipaa.cloud.langfuse.com/api/public

from langfuse import get_client
 
langfuse = get_client()
...
# fetch a trace
langfuse.api.trace.get(trace_id)
 
# async client via asyncio
await langfuse.async_api.trace(trace_id)
 
# explore more endpoints via Intellisense
langfuse.api.*
await langfuse.async_api.*

import { Langfuse } from "langfuse"
 
const langfuse = new Langfuse()
...
// fetch a trace
await langfuse.api.traceGet(traceId)
 
// explore more endpoints via Intellisense
langfuse.api.*

<dependencies>
  <dependency>
    <groupId>com.langfuse</groupId>
    <artifactId>langfuse-java</artifactId>
    <version>0.0.1-SNAPSHOT</version>
  </dependency>
</dependencies>
 
<repositories>
  <repository>
    <id>github</id>
    <name>GitHub Package Registry</name>
    <url>https://maven.pkg.github.com/langfuse/langfuse-java</url>
  </repository>
</repositories>

import com.langfuse.client.LangfuseClient;
import com.langfuse.client.resources.prompts.types.PromptMetaListResponse;
import com.langfuse.client.core.LangfuseClientApiException;
 
LangfuseClient client = LangfuseClient.builder()
  .url("https://cloud.langfuse.com") // 🇪🇺 EU data region
  // .url("https://us.cloud.langfuse.com") // 🇺🇸 US data region
  // .url("http://localhost:3000") // 🏠 Local deployment
  .credentials("pk-lf-...", "sk-lf-...")
  .build();
 
try {
  PromptMetaListResponse prompts = client.prompts().list();
} catch (LangfuseClientApiException error) {
  System.out.println(error.getBody());
  System.out.println(error.getStatusCode());
}