therealsachin/langfuse-mcp
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Langfuse MCP Server is a comprehensive tool for querying analytics, cost metrics, and usage data across multiple projects.
Tools
Functions exposed to the LLM to take actions
list_projects
List all configured Langfuse projects
project_overview
Get cost, tokens, and trace summary for a project
usage_by_model
Break down usage and cost by AI model
usage_by_service
Analyze usage by service/feature tag
top_expensive_traces
Find the most expensive traces
get_trace_detail
Get detailed information about a specific trace
get_projects
Alias for list_projects (list available Langfuse projects)
get_metrics
Query aggregated metrics (costs, tokens, counts) with flexible filtering
get_traces
Fetch traces with comprehensive filtering options
get_observations
Get LLM generations/spans with details and filtering
get_cost_analysis
Specialized cost breakdowns by model/user/daily trends
get_daily_metrics
Daily usage trends and patterns with averages
get_observation_detail
Get detailed information about a specific observation/generation
get_health_status
Monitor Langfuse system health and status
list_models
List all AI models available in the project
get_model_detail
Get detailed information about a specific AI model
list_prompts
List all prompt templates with filtering and pagination
get_prompt_detail
Get detailed information about a specific prompt template
Prompts
Interactive templates invoked by user choice
No prompts
Resources
Contextual data attached and managed by the client