| name | olore-langfuse-latest |
| description | Local Langfuse documentation reference (latest). Langfuse LLM observability documentation. Use for LLM tracing, evaluation, prompt management, datasets, experiments, OpenTelemetry integration, and SDK setup. |
Langfuse Documentation
Langfuse is an open-source AI engineering platform for LLM observability, prompt management, and evaluation. Use this skill when working on LLM tracing, evaluation workflows, prompt versioning, datasets, experiments, or any Langfuse SDK integration.
Documentation Structure
contents/
├── index.mdx # Platform overview (start here)
├── v4.mdx # Fast Preview / v4 migration guide
├── security-and-guardrails.mdx
├── observability/ # LLM tracing, SDK, features (35 files)
├── prompt-management/ # Prompt versioning, caching, CI/CD (19 files)
├── evaluation/ # Scores, datasets, experiments, judges (16 files)
├── api-and-data-platform/ # REST API, export, MCP server (10 files)
├── administration/ # Auth, SSO, RBAC, data retention (9 files)
└── metrics/ # Dashboards and metrics API (3 files)
Topic Guide
| Topic | Key Files |
|---|
| Getting started with tracing | contents/observability/get-started.mdx, contents/observability/sdk/instrumentation.mdx |
| SDK setup (Python/JS) | contents/observability/sdk/overview.mdx, contents/observability/sdk/instrumentation.mdx |
| SDK migration | contents/observability/sdk/upgrade-path/python-v3-to-v4.mdx, contents/observability/sdk/upgrade-path/js-v4-to-v5.mdx |
| v4 Fast Preview upgrade | contents/v4.mdx |
| Trace data model | contents/observability/data-model.mdx |
| Agent tracing | contents/observability/features/agent-graphs.mdx, contents/observability/features/mcp-tracing.mdx |
| Sessions and users | contents/observability/features/sessions.mdx, contents/observability/features/users.mdx |
| Cost tracking | contents/observability/features/token-and-cost-tracking.mdx |
| Sampling and masking | contents/observability/features/sampling.mdx, contents/observability/features/masking.mdx |
| Prompt management | contents/prompt-management/get-started.mdx, contents/prompt-management/overview.mdx |
| Prompt versioning | contents/prompt-management/features/prompt-version-control.mdx |
| Prompt variables and templates | contents/prompt-management/features/variables.mdx, contents/prompt-management/features/message-placeholders.mdx |
| Prompt caching | contents/prompt-management/features/caching.mdx |
| A/B testing prompts | contents/prompt-management/features/a-b-testing.mdx |
| LLM-as-a-judge evaluation | contents/evaluation/evaluation-methods/llm-as-a-judge.mdx |
| Scores and scoring | contents/evaluation/scores/overview.mdx, contents/evaluation/evaluation-methods/scores-via-sdk.mdx |
| Datasets | contents/evaluation/experiments/datasets.mdx |
| Running experiments | contents/evaluation/experiments/experiments-via-sdk.mdx, contents/evaluation/experiments/experiments-ci-cd.mdx |
| Annotation / human eval | contents/evaluation/evaluation-methods/annotation-queues.mdx |
| Public REST API | contents/api-and-data-platform/features/public-api.mdx |
| Querying data | contents/api-and-data-platform/features/query-via-sdk.mdx |
| Data export | contents/api-and-data-platform/features/export-from-ui.mdx, contents/api-and-data-platform/features/export-to-blob-storage.mdx |
| MCP server (authenticated) | contents/api-and-data-platform/features/mcp-server.mdx |
| Auth / SSO / RBAC | contents/administration/authentication-and-sso.mdx, contents/administration/rbac.mdx |
| Data retention and deletion | contents/administration/data-retention.mdx, contents/administration/data-deletion.mdx |
When to use
Use this skill when the user asks about:
- Setting up Langfuse tracing in Python or JavaScript/TypeScript
- Integrating Langfuse with LLM frameworks (LangChain, LlamaIndex, OpenAI, etc.)
- Prompt management, versioning, and deployment via Langfuse
- Evaluation workflows: LLM-as-a-judge, code evaluators, annotation queues
- Datasets and experiment tracking in Langfuse
- Migrating to SDK v4 (Python) or v5 (JS) / Fast Preview
- Querying Langfuse data via SDK or public REST API
- Exporting traces to S3/GCS or other blob storage
- Configuring SSO, RBAC, or data retention in Langfuse
- OpenTelemetry and distributed tracing with Langfuse
How to find information
- Use the Topic Guide above to identify relevant files
- Read
TOC.md for the complete file listing by directory
- Read specific files from
contents/{path}
