You are helping me build the following AI agent workflow.

## Goal
Sales Pipeline with BuiltWeith Data: Fetches tech stack data via BuiltWith API, maps it in Google Sheets, and creates visual lead cards in Trello organized by technology.

## Specification
- What it does: Turn technology intelligence into actionable sales leads by fetching tech stack details from BuiltWith and organizing them visually on Trello. You get mapped data stored in Google Sheets while automatically creating lead cards that sort your pipeline by specific technologies.
- Trigger: Triggered by an event (Scheduled · automated updates)
- Autonomy: Fully hands-off
- Expected setup effort: under an hour
- Tools/services involved:
  - BuiltWith API: Fetch technology stack data
  - HTTP Request: Retrieve external data via API
  - Google Sheets: Store and map lead data
  - Trello: Create visual sales pipeline cards
  - Code: Process and transform data fields

## Known pitfalls, handle each one explicitly in your implementation
1. Google Sheets row limits can cause failures if not handled by batching writes in chunks of 500 rows.
2. Trello card creation may fail if the target board ID is incorrect or if the user lacks write permissions on that board.
3. BuiltWith data accuracy varies for niche technologies so you should add a validation step to filter out false positives.

## Reference implementation
https://n8n.io/workflows/4786 (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/automate-sales-pipeline-with-builtweith-data/ via usecasesforagents.com