Output Services Check

Output Services Health Check

Overview

This skill verifies that all required Output SDK development services are running and healthy. The Output SDK requires three services for local development: Docker containers, the API server, and the Temporal server with its UI.

When to Use This Skill

• Starting a debugging session
• Encountering connection refused errors (ECONNREFUSED)
• Workflows failing to start or connect
• Timeout errors when running workflows
• Before running any workflow commands
• When the development environment seems unresponsive

Instructions

Step 1: Check Docker Containers

docker ps | grep output

Expected: You should see containers related to output running. If no containers appear, Docker may not be running or the services haven't been started.

Step 2: Check API Server Health

curl -s http://localhost:3001/health

Expected: Returns a health status response. If this fails with "Connection refused", the API server is not running.

Step 3: Check Temporal UI Accessibility

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

Expected: "Temporal UI accessible". If not accessible, Temporal server may not be running.

Remediation Steps

If Docker is not running:

1. Start Docker Desktop (macOS/Windows) or the Docker daemon (Linux)
2. Wait for Docker to fully initialize
3. Re-run the checks

If services are not running:

# Start all development services
npx output dev

Wait 30-60 seconds for all services to initialize, then re-run the checks.

If only some services are down:

# `output dev` reconciles a partially-up stack itself — it runs `up -d` for the
# missing containers, then attaches to monitor. Prefer it over raw compose so
# the project name and compose file match what the CLI uses.
npx output dev

To stop everything first and start clean:

npx output dev down
npx output dev

If services fail to start:

1. Check for port conflicts: lsof -i :3001 and lsof -i :8080
2. Check Docker logs: docker compose logs
3. Ensure you have sufficient system resources (memory, disk space)

Decision Tree

IF docker_not_running:
  ACTION: Start Docker Desktop/daemon
  WAIT: for Docker to initialize

IF no_output_containers:
  RUN: npx output dev
  WAIT: 30-60 seconds for services

IF api_not_responding:
  CHECK: port 3001 for conflicts
  RUN: output dev (if not already running)

IF temporal_not_accessible:
  CHECK: port 8080 for conflicts
  CHECK: docker compose logs for Temporal errors

IF all_services_healthy:
  PROCEED: with workflow debugging

Examples

Scenario: User reports "connection refused" when running a workflow

# First, check if services are running
docker ps | grep output
# Output: (empty - no containers)

# Start services
npx output dev

# Wait and verify
sleep 60
curl -s http://localhost:3001/health
# Output: {"status":"healthy"}

Scenario: Partial service failure

# API responds but Temporal doesn't
curl -s http://localhost:3001/health  # Works
curl -s http://localhost:8080  # Fails

# Check Temporal logs
docker compose logs temporal

# Restart just Temporal
docker compose restart temporal