{"x402":"1.0","name":"Tabular Contract","description":"Validate CSV column contracts: types, nulls, unique values, enums, ranges and lengths. Up to 5000 rows,64 columns,200 errors. 0.003 USDC on Base. Sales end2026-09-30T19:13:57Z. Live paid flow not tested.","capabilities":["csv","schema","validation","data-quality","contract","constraints"],"pricing":{"currency":"USDC","base":"0.003","unit":"request"},"payment":{"address":"0x2f9e06d13f8Fb5cD35398F36c3C584623b6eDb38","chain":"base","facilitator":"https://pay.openfacilitator.io"},"endpoint":"https://tabular-contract.goodcrypto1.chatgpt.site/v1/validate","documentation":"https://tabular-contract.goodcrypto1.chatgpt.site"}