# TableCheck sandbox
Check structured quote tables for line arithmetic, total discrepancies and duplicate row IDs.
POST /tablecheck returns an MPP 402 challenge. Price: test-only USD 0.50. Tempo Moderato chain 42431, pathUSD, or sandbox SPT. No live funds.
POST /evaluation to report workflow fit using the OpenAPI schema; no name, email or sensitive data. This is a self-report, not a purchase. GET /examples for exact inputs; GET /catalog for terms; GET /openapi.json for API.
Use only fictional/redacted tables. No OCR, tax/discount validation, source verification or permission to execute a purchase.
Retries: preserve the same credential and body. On 503 do not create another payment. Refunded credentials return 410.