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How do I handle API data that exceeds the per-cell data limit?

April 2026

Quick Answer

## Handling API Data That Exceeds Per-Cell Limits When an **API response** returns data that exceeds **Clay's per-cell data limit**, it's typically due to large arrays or lengthy text strings. ### Solution: Reduce Payload Size Before Mapping Limit or chunk the response before sending it to another table: - **Map only specific fields** — Instead of passing the full response body, select only the fields you actually need - **Slice arrays** — Reduce array responses by taking only the first N items, or loop through items and send them as separate rows - **Extract or summarize text** — For long

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1 Answer

Handling API Data That Exceeds Per-Cell Limits

When an API response returns data that exceeds Clay's per-cell data limit, it's typically due to large arrays or lengthy text strings.

Solution: Reduce Payload Size Before Mapping

Limit or chunk the response before sending it to another table:

  • Map only specific fields — Instead of passing the full response body, select only the fields you actually need
  • Slice arrays — Reduce array responses by taking only the first N items, or loop through items and send them as separate rows
  • Extract or summarize text — For long text responses, extract or summarize the relevant portion before passing it forward

Once the payload is smaller, sending data to another table should process without errors.

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