You are helping me build the following AI agent workflow.

## Goal
Gold Market Prediction System: Every six hours, the system fetches gold prices, news, and macro data to generate an AI-powered forecast report with confidence metrics.

## Specification
- What it does: Get actionable gold market forecasts every six hours by having the system automatically gather live prices, news, and economic data to analyze trends for you. You receive a concise report with clear price predictions and confidence metrics so you can make informed decisions without manual research.
- Trigger: On a schedule (Scheduled · every 6 hours)
- Autonomy: Fully hands-off
- Expected setup effort: about an afternoon
- Tools/services involved:
  - n8n: Workflow orchestration and scheduling
  - MetalPriceAPI: Fetching live gold prices
  - NewsAPI: Retrieving financial headlines
  - FRED: Accessing macroeconomic indicators
  - OpenRouter Chat Model: AI sentiment and trend analysis

## Known pitfalls, handle each one explicitly in your implementation
1. FRED data often has inconsistent date formats which will break correlation analysis so you need a code node to standardize timestamps before merging.
2. WordPress authentication tokens expire quickly so you must implement automatic token refresh logic in your publish step.

## Reference implementation
https://n8n.io/workflows/10379 (workflow template)
Fetch and inspect this before building. If it matches my stack, adapt it;
if not, rebuild the pattern with my tools.

## Process requirements
1. Before building: ask me which of the listed tools I actually use and
   what my platform is (n8n / Make / code / other). Do not assume.
2. Adapt the pattern to my answers; do not force the reference stack.
3. Address every pitfall above; tell me how you handled each.
4. Provide a test plan I can run before letting this touch real data.
5. Ask before any step that sends messages, modifies data, or spends money.

Source: https://usecasesforagents.com/use-case/gold-market-prediction-system/ via usecasesforagents.com