AI and agents in hledger (Ledger)

AI with hledger, the open-source implementation of the Ledger plain-text double-entry accounting format: assistants such as Claude that write CSV import rules, and balance and income-statement queries that prepare tax returns and reports from Git-versioned journals.

Official website: hledger (Ledger)

1 entry

Use caseEvidence: First-hand experience
UK Self Assessment from plain-text books: Jamie Tanna has Claude write the CSV importers and takes each figure from hledger
Jamie TannaIndividual · Personal finance / individual income tax (United Kingdom)
Software engineer and open-source maintainer Jamie Tanna filled in his first UK Self Assessment return from plain-text Ledger journals: Claude Sonnet 4.5 wrote the scripts that turn Stripe and Hyperwallet CSV exports into entries, seeing only the headers, and hledger queries give the figures for each box. First-hand experience with fictional sample data and no results to verify; the return itself is typed in by him.
October 21, 2026

AI and agents in hledger (Ledger)

UK Self Assessment from plain-text books: Jamie Tanna has Claude write the CSV importers and takes each figure from hledger

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