Langfuse MCP Server
by Shimizu46654
Server Configuration
Describes the environment variables required to run the server.
| Name | Required | Description | Default |
|---|---|---|---|
| LANGFUSE_HOST | No | Langfuse instance URL. Use your self-hosted URL if applicable; defaults to https://cloud.langfuse.com. | https://cloud.langfuse.com |
| LANGFUSE_PUBLIC_KEY | No | Langfuse public API key (pk-...). Required unless credentials are supplied via a profile or HTTP Authorization header. | |
| LANGFUSE_SECRET_KEY | No | Langfuse secret API key (sk-...). Required unless credentials are supplied via a profile or HTTP Authorization header. | |
| LANGFUSE_MCP_PROFILE | No | Profile name to load from the profiles file; same as --profile. Can supply credentials instead of LANGFUSE_PUBLIC_KEY/LANGFUSE_SECRET_KEY. | |
| LANGFUSE_MAX_AGE_DAYS | No | Caps the lookback window for time-based tools such as fetch_traces and fetch_observations. Set to match your Langfuse instance data retention. | 7 |
| LANGFUSE_MCP_READ_ONLY | No | Set to true to disable all write operations for safer read-only access. | |
| LANGFUSE_MCP_PROFILES_FILE | No | Path to the profiles TOML file; same as --profiles-file. Defaults to $XDG_CONFIG_HOME/langfuse-mcp/profiles.toml or ~/.config/langfuse-mcp/profiles.toml. | |
| LANGFUSE_MCP_DEFAULT_OUTPUT_MODE | No | Default MCP output_mode for clients that omit the parameter. Supported values: compact, full_json_string, full_json_file. | |
| LANGFUSE_MCP_TRACE_TIMEOUT_SECONDS | No | Per-request read timeout in seconds for single-trace fetches such as fetch_trace. 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