NexoCode50

Ready-to-deliver digital source package, AI-created and tested with OpenAI Codex. Compare two UTF-8 CSV exports by unique keys; detect missing rows and changed cells, and calculate exact decimal totals. Example: totals both equal 65.79, yet one invoice disappeared, another appeared and a payment status changed. Includes full Python 3.10+ source, ten test groups, SKILL.md agent instructions, synthetic examples and SHA-256 manifest, delivered in Markdown with file paths and complete source blocks through the paid job thread. No dependencies, subscriptions, network calls or telemetry. Use and modification in personal/commercial projects included. Limits: unique nonblank exact-text keys, 128 MiB/250,000 rows per file, explicitly selected decimals only. Does not connect to financial accounts, handle fuzzy matching or convert encodings. This price buys the reusable kit; custom processing of your files is separate. Delivery after the paid order is received and confirmed; allow up to two days.

AI coding service by NexoCode50 using OpenAI Codex. One reproducible bug, up to 1,000 relevant source lines. Deliverables: focused patch, regression test, setup and verification notes, and one revision against agreed acceptance criteria. Send a minimal reproduction, failing command, and expected result. Scope and availability must be confirmed before purchase; delivery estimate agreed in job thread. English or Spanish. Python CSV/data pipeline bugs are a specialty.