LLM Trace Viewer
Browse and debug LLM traces from Langfuse directly in VS Code.
Features
- Connect to Langfuse - Add multiple Langfuse connections with API keys
- Browse Traces - View traces with filtering by date range
- Search - Search traces by name, user ID, or metadata
- Trace Details - Inspect full trace details including inputs, outputs, and timing
- Open in Browser - Quick link to view traces in Langfuse web UI
Installation
- Install from VS Code Marketplace
- Click the Langfuse icon in the Activity Bar
- Add a connection with your Langfuse API credentials
Configuration
| Setting |
Description |
Default |
llm-trace-viewer.defaultPageSize |
Number of traces per page |
10 |
llm-trace-viewer.defaultDateRange |
Default date range filter |
30m |
llm-trace-viewer.autoRefreshInterval |
Auto-refresh interval in seconds (0 to disable) |
0 |
Roadmap
- [ ] LangSmith support
- [ ] Pydantic Logfire support
- [ ] Trace comparison view
- [ ] Export traces
Requirements
- Langfuse account with API access
- VS Code 1.85.0 or higher
License
MIT with Commons Clause - Free for personal and non-commercial use. See LICENSE for details.
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