# How to do common tasks from an AI agent

Each guide shows one task, the tool that fits it, a working call and what to check in the result.

- [Compare two CSV files by key from an AI agent](/how-to/compare-two-csv-files)
- [Validate an IBAN from an AI agent](/how-to/validate-iban)
- [Add business days to a date from an AI agent](/how-to/add-business-days-to-a-date)
- [Convert CSV to JSON from an AI agent](/how-to/convert-csv-to-json)
- [Diff two JSON documents from an AI agent](/how-to/diff-two-json-documents)
- [Compute a SHA-256 hash from an AI agent](/how-to/compute-sha256-hash)
- [Build a loan amortization schedule from an AI agent](/how-to/loan-amortization-schedule)
- [Multiply decimals exactly from an AI agent](/how-to/multiply-decimals-exactly)