Formula Evaluator For Excel - XLSX recalc API

Formula Evaluator For Excel - XLSX recalc API - Evaluate any spreadsheet formula or recalc a whole XLSX workbook. HyperFormula-backed.

What you get

• POST /v1/excel/eval - primary endpoint.
• X-API-Key authentication, per-key rate limits, audit log.
• OpenRouter-backed where AI is involved - no model keys to manage on your side.
• Interactive Swagger docs at api-excel-formula.knowlez.com/docs.

Plans

• Starter - $9/mo, 1,000 ops included, $0.01/op overage.
• Pro - $29/mo, 10,000 ops included, $0.005/op overage.