# Source: https://langfuse.com/docs/prompt-management/overview.md

# Source: https://langfuse.com/docs/observability/sdk/overview.md

# Source: https://langfuse.com/docs/observability/overview.md

# Source: https://langfuse.com/docs/metrics/overview.md

# Source: https://langfuse.com/docs/evaluation/overview.md

# Source: https://langfuse.com/docs/api-and-data-platform/overview.md

---
title: Open Source LLM API & Data Platform
description: Langfuse is designed to be extensible and flexible. People using Langfuse are building all kinds of workflows and customizations on top of it. This is powered by our open data platform.
---

# API & Data Platform

**Langfuse is designed to be open, extensible and flexible** (see [_why langfuse?_](/why)). People using Langfuse are building all kinds of workflows and customizations on top of it. This is powered by our open data platform.

Example use cases:

- Billing based on LLM costs tracked in Langfuse
- Reporting of online evaluations in external dashboards
- Fine-tuning based on raw exports of traces
- Correlation of LLM Evals with observed user behavior in Data Warehouse

<Frame fullWidth>
  <img
    src="/images/docs/open-data-platform-light.png"
    alt="Open Data Platform"
  />
</Frame>

## Features

import {
  Globe,
  Code,
  LayoutDashboard,
  Activity,
  Download,
  Cloud,
  Blocks,
} from "lucide-react";

<Cards num={3}>
  <Card
    title="MCP Server"
    href="/docs/api-and-data-platform/features/mcp-server"
    icon={<Blocks />}
    arrow
  />
  <Card
    title="Public API"
    href="/docs/api-and-data-platform/features/public-api"
    icon={<Globe />}
    arrow
  />
  <Card
    title="Query via SDKs"
    href="/docs/api-and-data-platform/features/query-via-sdk"
    icon={<Code />}
    arrow
  />
  <Card
    title="Export from UI"
    href="/docs/api-and-data-platform/features/export-from-ui"
    icon={<Download />}
    arrow
  />
  <Card
    title="Export to Blob Storage"
    href="/docs/api-and-data-platform/features/export-to-blob-storage"
    icon={<Cloud />}
    arrow
  />
  <Card
    title="Export to PostHog"
    href="/integrations/analytics/posthog"
    icon={
      <div className="w-6 h-6 dark:bg-white rounded-sm p-1 flex items-center justify-center">
        <img
          src="/images/integrations/posthog_icon.svg"
          alt="PostHog icon"
          className="w-full h-full object-contain"
        />
      </div>
    }
    arrow
  />
  <Card
    title="Export to Mixpanel"
    href="/integrations/analytics/mixpanel"
    icon={
      <div className="w-6 h-6 dark:bg-white rounded-sm p-1 flex items-center justify-center">
        <img
          src="/images/integrations/mixpanel_icon.svg"
          alt="Mixpanel icon"
          className="w-full h-full object-contain"
        />
      </div>
    }
    arrow
  />
</Cards>