Temporal CLI Skill

Execute Temporal CLI commands with smart patterns for workflow management. This skill provides comprehensive knowledge for using Temporal CLI v1.5.1 effectively with base64 and jq.

Prerequisites

• Temporal CLI v1.5.1+ installed and available in PATH
• Configured environments in ~/.config/temporalio/temporal.yaml
• base64 command-line tool (standard on most systems)
• jq JSON processor for parsing and filtering

Core Command Pattern

ALL Temporal CLI commands follow this base pattern:

temporal --env <environment> -o json --time-format iso workflow <operation> [args...]

Global flags (ALWAYS used):

• --env <env> - Temporal environment from config
• -o json - JSON output format
• --time-format iso - ISO 8601 timestamps

Quick Reference

Essential Operations

Knowledge Guides

Progressive Disclosure Strategy

1. Start here - Read this SKILL.md for overview
2. Need specific command? - Check Command Patterns
3. Building queries? - See Query Construction
4. Large history? - Use History Filtering
5. Custom attributes? - Review Custom Search Attributes
6. Hit errors? - Consult Error Handling
7. Destructive ops? - Verify Safety Checks

Key Principles

1. Always Count Before Listing

# Get count first to understand scope
COUNT=$(temporal --env prod -o json --time-format iso workflow count \
  --query "ExecutionStatus = 'Failed'" | jq '.count')

# Then list with appropriate limit
temporal --env prod -o json --time-format iso workflow list \
  --query "ExecutionStatus = 'Failed'" \
  --limit ${COUNT}

2. Filter Large Histories

Histories with 100+ events should be filtered:

# Use jq to show only failures
temporal --env prod -o json --time-format iso workflow show \
  --workflow-id "my-workflow" | \
  jq '.events[] | select(.eventType | contains("Failed"))'

See History Filtering for more patterns.

3. Validate Queries First

Pre-validate queries before execution to avoid errors:

# Check for unsupported LIKE operator
if echo "$QUERY" | grep -qi 'LIKE'; then
  echo "ERROR: Use STARTS_WITH instead of LIKE"
  exit 1
fi

See Smart Patterns for validation logic.

4. Decode Payloads Carefully

Workflow event payloads are base64-encoded:

# Decode workflow input
temporal --env prod -o json --time-format iso workflow show \
  --workflow-id "my-workflow" | \
  jq -r '.events[0].workflowExecutionStartedEventAttributes.input.payloads[0].data' | \
  base64 -d | \
  jq '.'

See Payload Decoding for complete recipes.

Common Workflows

Find Failed Workflows

# Count failures
temporal --env prod -o json --time-format iso workflow count \
  --query "ExecutionStatus = 'Failed'"

# List failed workflows
temporal --env prod -o json --time-format iso workflow list \
  --query "ExecutionStatus = 'Failed'" \
  --limit 10

Find Non-Deterministic / Problematic Workflows

IMPORTANT: Workflows with non-deterministic errors often remain in Running status, not Failed. Use TemporalReportedProblems to find them:

# Find running workflows with WorkflowTask failures (includes non-deterministic errors)
temporal --env prod -o json --time-format iso workflow list \
  --query "ExecutionStatus = 'Running' AND TemporalReportedProblems IN ('category=WorkflowTaskFailed', 'category=WorkflowTaskTimedOut')" \
  --limit 20

# Count problematic workflows
temporal --env prod -o json --time-format iso workflow count \
  --query "ExecutionStatus = 'Running' AND TemporalReportedProblems IN ('category=WorkflowTaskFailed')"

TemporalReportedProblems values:

• category=WorkflowTaskFailed - WorkflowTask failed (includes non-deterministic errors)
• category=WorkflowTaskTimedOut - WorkflowTask timed out
• cause=WorkflowTaskFailedCauseNonDeterministicError - Specifically non-deterministic errors

Get failure details from history:

# Get the last WorkflowTaskFailed event with full error message
temporal --env prod -o json --time-format iso workflow show \
  --workflow-id "my-workflow" | \
  jq '[.events[] | select(.eventType == "EVENT_TYPE_WORKFLOW_TASK_FAILED")] | .[-1]'

Debug Stuck Workflow

# Get stack trace
temporal --env prod -o json --time-format iso workflow stack \
  --workflow-id "stuck-workflow-123"

# Check history for patterns
temporal --env prod -o json --time-format iso workflow show \
  --workflow-id "stuck-workflow-123" | \
  jq '[.events[] | .eventType] | group_by(.) | map({type: .[0], count: length})'

Customer-Specific Workflows

# Using custom search attribute
temporal --env prod -o json --time-format iso workflow list \
  --query "CustomerId = 'customer-abc-123'" \
  --limit 20

Safety First

Before destructive operations (terminate, reset):

1. Double-check workflow ID
2. ALWAYS provide --reason
3. For batch operations, count affected workflows first
4. Review Safety Checks

Quick Examples

List Workflows by Type

temporal --env staging -o json --time-format iso workflow list \
  --query "WorkflowType = 'OnboardingFlow'" \
  --limit 10

Start New Workflow

temporal --env staging -o json --time-format iso workflow start \
  --type "OnboardingFlow" \
  --task-queue "patient-workflows" \
  --workflow-id "patient-onboard-$(date +%s)" \
  --input '{"customerId": "cust-123"}'

Signal Workflow

temporal --env prod -o json --time-format iso workflow signal \
  --workflow-id "order-processing-456" \
  --name "approvalReceived" \
  --input '{"approved": true}'

Asset Templates

Pre-built templates available in assets/:

• query-templates.json - Common query patterns
• jq-filters.json - Reusable jq filters
• event-types.json - Event type reference

Getting Started

1. Verify Temporal CLI is installed: temporal --version
2. Check environment configuration: cat ~/.config/temporalio/temporal.yaml
3. Try counting workflows: temporal --env staging -o json --time-format iso workflow count
4. Explore Command Patterns for detailed examples

When Things Go Wrong

1. Query syntax error? → Check Query Construction
2. Unknown operator? → See Error Handling
3. Empty results? → Try WorkflowId fallback in Smart Patterns
4. Large history overwhelming? → Use History Filtering
5. Non-deterministic errors? → Use TemporalReportedProblems query (see above) or Error Handling

Next Steps

Start with Command Patterns for complete bash examples of all operations.