Langfuse MCP Server
Server Configuration
Describes the environment variables required to run the server.
| Name | Required | Description | Default |
|---|---|---|---|
| LANGFUSE_HOST | No | The Langfuse instance URL. Use your self-hosted URL if applicable. | https://cloud.langfuse.com |
| LANGFUSE_PUBLIC_KEY | No | Your Langfuse public API key (pk-...). Required unless using a profile. | |
| LANGFUSE_SECRET_KEY | No | Your Langfuse secret API key (sk-...). Required unless using a profile. | |
| LANGFUSE_MCP_PROFILE | No | Profile to load from the profiles file; same as --profile. | |
| LANGFUSE_MAX_AGE_DAYS | No | Caps the lookback window for time-based tools. Set to match your Langfuse instance's data retention. | 7 |
| LANGFUSE_MCP_READ_ONLY | No | Set to true to disable all write operations for safer read-only access. | false |
| LANGFUSE_MCP_PROFILES_FILE | No | Path of the profiles file; same as --profiles-file. | $XDG_CONFIG_HOME/langfuse-mcp/profiles.toml |
| LANGFUSE_MCP_DEFAULT_OUTPUT_MODE | No | MCP-exposed default output_mode. Supported values: compact, full_json_string, full_json_file. | compact |
| LANGFUSE_MCP_TRACE_TIMEOUT_SECONDS | No | Per-request read timeout in seconds for single-trace fetches. Must be a positive integer. | 120 |
Instructions
Guidance the server publishes about itself, which clients place ahead of the tool catalog so the model reads it before choosing anything.
This server publishes no instructions, or was last inspected before Glama recorded them.
Capabilities
Server capabilities have not been inspected yet.
Tools
Functions exposed to the LLM to take actions
| Name | Description |
|---|---|
No tools | |
Prompts
Interactive templates invoked by user choice
| Name | Description |
|---|---|
No prompts | |
Resources
Contextual data attached and managed by the client
| Name | Description |
|---|---|
No resources | |
This server cannot be deployed
Maintenance
ActivityActive
ResponsivenessNo issues