output-debug-workflow

name	output-debug-workflow
description	Debug Output SDK workflow issues. Use when user reports a workflow failing, erroring, hanging, producing wrong results, or asks to debug, troubleshoot, or investigate a workflow execution.

Your task is to systematically debug an Output SDK workflow issue in a local development environment.

The arguments the user provided describe the problem they're experiencing, and may include a specific workflow ID.

Use the todo tool to track your progress through the debugging process.

Debugging Process

Overview

Follow a systematic approach to identify and resolve workflow execution issues: verify infrastructure, gather evidence, analyze traces, and apply targeted fixes.

<pre_flight_check> EXECUTE: Claude Skill: output-meta-pre-flight </pre_flight_check>

<process_flow>

Step 1: Verify Services Running

Before debugging, confirm that all required services are operational. The output-services-check skill provides comprehensive guidance.

<verification_commands>

# Check Docker containers are running
docker ps | grep output

# Verify Output services respond
curl -s http://localhost:3001/health || echo "API not responding"

# Check Temporal UI is accessible
curl -s http://localhost:8080 > /dev/null && echo "Temporal UI accessible" || echo "Temporal UI not accessible"

</verification_commands>

<decision_tree> IF docker_not_running: RUN: docker compose up -d WAIT: for services to start (30-60 seconds) IF output_dev_not_running: RUN: npx output dev WAIT: for services to initialize IF all_services_running: PROCEED: to step 2 </decision_tree>

Expected State:

• Docker containers for output are running
• API server responds at http://localhost:3001
• Temporal UI accessible at http://localhost:8080

Step 2: List Workflow Runs

Identify the failing workflow execution by listing recent runs. The output-workflow-runs-list skill provides detailed filtering guidance.

<list_commands>

# List all recent workflow runs
npx output workflow runs list

# Filter by specific workflow type (if known)
npx output workflow runs list <workflowName>

# Get detailed JSON output for analysis
npx output workflow runs list --json

# Limit results to most recent
npx output workflow runs list --limit 10

</list_commands>

<identification_criteria> Look for:

• Status: FAILED or TERMINATED
• Recent timestamp matching when the issue occurred
• Workflow type matching the problem description </identification_criteria>

<decision_tree> IF user_provided_workflow_id: USE: provided workflow ID PROCEED: to step 3 IF failed_runs_found: SELECT: most recent failed run NOTE: workflow ID from output PROCEED: to step 3 IF no_runs_found: CHECK: workflow exists with npx output workflow list IF workflow_not_found: REPORT: workflow doesn't exist SUGGEST: verify workflow name and location ELSE: SUGGEST: run the workflow with npx output workflow run <name> </decision_tree>

Step 3: Debug Specific Workflow

Retrieve and analyze the execution trace for the identified workflow. The output-workflow-trace skill provides analysis techniques.

<debug_commands>

# Display execution trace (text format)
npx output workflow debug <workflowId>

# Display full untruncated trace (JSON format) - recommended for detailed analysis
npx output workflow debug <workflowId> --json

</debug_commands>

Tip: Use --json for complete trace data without truncation.

<analysis_checklist>

1. Identify which step failed
2. Examine the error message and stack trace
3. Check input data passed to the failing step
4. Check output data from preceding steps
5. Look for patterns matching common error types </analysis_checklist>

<temporal_ui_guidance> For visual workflow inspection, open the Temporal Web UI at http://localhost:8080:

• Find your workflow execution by ID
• View the event history timeline
• Inspect individual step inputs and outputs </temporal_ui_guidance>

Step 4: Suggest Fixes

Based on the trace analysis, identify the error pattern and suggest targeted fixes. Claude will invoke the relevant error skill based on symptoms.

<error_matching>

Symptom	Skill
"incompatible schema" errors, type errors	output-error-zod-import
Replay failures, inconsistent results	output-error-nondeterminism
Retries not working, errors swallowed	output-error-try-catch
Type errors, undefined properties at step boundaries	output-error-missing-schemas
Workflow hangs, determinism errors	output-error-direct-io
Untraced requests, axios errors	output-error-http-client

</error_matching>

<decision_tree> IF error_matches_known_pattern: INVOKE: relevant error skill for detailed fix ELSE: CONSULT: workflow-quality subagent for additional patterns SUGGEST: Manual trace inspection in Temporal UI </decision_tree>

After applying fix: ```bash # Re-run the workflow to verify npx output workflow run --input ''

Or start asynchronously and check result

npx output workflow start --input '' npx output workflow status npx output workflow result

Or, if the fix only affects a specific step and earlier steps succeeded,

re-run from after the last known-good step (skips re-executing earlier work)

npx output workflow reset --step --reason ""

For targeted rerun after fixing a downstream step, see the `output-workflow-reset` skill.
</verification>

</step>

</process_flow>

<post_flight_check>
  EXECUTE: Claude Skill: `output-meta-post-flight`
</post_flight_check>

---- START ----

Use the problem description and any optional workflow ID the user provided.