get_trace_detail
Retrieve comprehensive trace data including all observations to analyze performance, costs, and usage patterns for debugging and optimization.
Instructions
Get detailed information about a specific trace including all observations.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| traceId | Yes | The trace ID to retrieve |
Implementation Reference
- src/tools/get-trace-detail.ts:9-70 (handler)The core handler function that fetches a specific trace by ID, retrieves associated observations, constructs a detailed TraceDetail object, and returns it as formatted JSON. Handles errors by returning error content.
export async function getTraceDetail( client: LangfuseAnalyticsClient, args: z.infer<typeof getTraceDetailSchema> ) { try { const [traceResponse, observationsResponse] = await Promise.all([ client.getTrace(args.traceId), client.listObservations({ traceId: args.traceId }), ]); const trace = traceResponse; const observations = observationsResponse.data || []; const detail: TraceDetail = { traceId: trace.id, name: trace.name || 'Unnamed trace', totalCost: trace.totalCost || 0, totalTokens: trace.totalTokens || 0, timestamp: trace.timestamp, userId: trace.userId, tags: trace.tags, metadata: trace.metadata, observations: observations.map((obs: any) => ({ id: obs.id, type: obs.type, name: obs.name, startTime: obs.startTime, endTime: obs.endTime, model: obs.model, inputTokens: obs.usage?.input, outputTokens: obs.usage?.output, totalTokens: obs.usage?.total, cost: obs.calculatedTotalCost, })), }; return { content: [ { type: 'text' as const, text: JSON.stringify(detail, null, 2), }, ], }; } catch (error) { // Handle case where trace doesn't exist or API error const errorMessage = error instanceof Error ? error.message : 'Unknown error'; return { content: [ { type: 'text' as const, text: JSON.stringify({ error: `Failed to retrieve trace ${args.traceId}: ${errorMessage}`, traceId: args.traceId, }, null, 2), }, ], isError: true, }; } } - src/tools/get-trace-detail.ts:5-7 (schema)Zod schema for input validation, requiring a single 'traceId' string parameter.
export const getTraceDetailSchema = z.object({ traceId: z.string(), }); - src/index.ts:1025-1028 (registration)Registration in the CallToolRequest switch statement: parses arguments using the schema and invokes the handler function.
case 'get_trace_detail': { const args = getTraceDetailSchema.parse(request.params.arguments); return await getTraceDetail(this.client, args); } - src/index.ts:275-288 (registration)Tool metadata registration in the ListToolsRequest handler, defining name, description, and input schema for discovery.
name: 'get_trace_detail', description: 'Get detailed information about a specific trace including all observations.', inputSchema: { type: 'object', properties: { traceId: { type: 'string', description: 'The trace ID to retrieve', }, }, required: ['traceId'], }, }, - src/mode-config.ts:32-32 (helper)Inclusion in readonly tools set, allowing the tool in readonly server mode.
'get_trace_detail',