You are helping me build the following AI agent workflow.

## Goal
Compare Physical vs Digital Gold Costs and Returns: Compares digital vs physical gold landed costs using live rates, taxes, and making charges to generate a buy verdict.

## Specification
- What it does: Calculate the true landed cost of buying gold by combining live digital rates with physical benchmarks, including taxes and making charges. Analyze global market headlines to determine sentiment and generate an efficiency score that tells you if now is a good time to buy. Automatically log all price comparisons and verdicts into your spreadsheet for long-term tracking.
- Trigger: Run manually (Manual · on demand or Scheduled · daily)
- Autonomy: Fully hands-off
- Expected setup effort: about an afternoon
- Tools/services involved:
  - GoldAPI: fetch live digital gold prices
  - IBJA website: scrape physical gold benchmark rates
  - Groq Chat Model: analyze market sentiment and generate efficiency scores
  - Google Sheets: log investment reports and price data

## Known pitfalls, handle each one explicitly in your implementation
1. IBJA website structure changes frequently, so wrap the scrape logic in error handling to retry with exponential backoff if parsing fails.
2. Currency fluctuations may skew landed cost calculations, ensure all inputs are normalized to a single base currency before comparison.

## Reference implementation
https://n8n.io/workflows/15039 (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/compare-physical-vs-digital-gold-costs-and-returns/ via usecasesforagents.com