observe-trace

# Observe Trace Collect distributed trace spans for a task and build a visual trace tree showing the execution flow, timing, and bottlenecks. ## When to use When you need to understand how a task was executed across agents -- which spans ran, how long each took, where bottlenecks occurred, and how agents coordinated. ## Steps 1. **Collect spans** -- call `mcp__plugin_ruflo-core_ruflo__memory_search --namespace observability` (or `memory_list`) to retrieve all spans matching the `<task-id>`. The `memory_*` tool family routes by namespace; `agentdb_hierarchical-*` does NOT (it routes by tier `working|episodic|semantic`), so use `memory_*` here. See [ruflo-agentdb ADR-0001 §"Namespace convention"](../../../ruflo-agentdb/docs/adrs/0001-agentdb-optimization.md). 2. **Build trace tree** -- organize spans into a parent-child hierarchy using `parentSpanId` references, with the root span at the top 3. **Calculate timing** -- for each span, compute duration (endTime - startTime), and identify the critical path (longest chain of sequential spans) 4. **Identify bottlenecks** -- flag spans where duration exceeds the p95 for that operation type, or where gaps between spans suggest idle time 5. **Synthesize** -- call `mcp__plugin_ruflo-core_ruflo__agentdb_context-synthesize` to combine span metadata into a narrative summary of the execution flow 6. **Report** -- display the trace tree with: span name, agent, duration, status (OK/ERROR), and bottleneck flag; include total trace duration and critical path duration ## CLI alternative ```bash npx @claude-flow/cli@latest memory search --query "trace spans for task TASK_ID" --namespace observability ```