Build an accountant's own bookkeeping system on Claude
A CPA built his own bookkeeping software powered by Claude and Jev to handle routine work automatically. For people who stay on QuickBooks Online he suggests a developer API key, Claude in the terminal and skills for transaction matching, journal entries and monthly bank reconciliations.
Source
@timthecpa on X · 2026-10-13
Written in our own words. Credit to the original author. Link checked 2026-10-21.
What they did
A CPA built his own bookkeeping software powered by Claude and Jev to handle routine work automatically. For people who stay on QuickBooks Online he suggests a developer API key, Claude in the terminal and skills for transaction matching, journal entries and monthly bank reconciliations.
Result (as claimed)
He says it handles a lot of the work on its own; he still answers its questions and makes the judgment calls.
Tools they used
Cost: Pricing depends on the tools you pick; check each official pricing page.
Set it up
Gather the documents
Collect statements, bills, invoices or tax documents for the period you want reviewed.
Ask for an audit, not actions
Have Claude list findings, amounts and suggested next steps before it does anything.
Approve each action
Approve cancellations, disputes or payments one at a time. Never give an agent open-ended access to move money.
Track the result
Record what changed and what you saved so you can check it next month. This is not financial advice.
Copy the full setup prompt
Paste into your agent and it will walk you through the setup, asking before anything that sends, posts or spends.
You are helping me set up this AI use case end to end in Claude Code. Goal: Build an accountant's own bookkeeping system on Claude What the original author did: A CPA built his own bookkeeping software powered by Claude and Jev to handle routine work automatically. For people who stay on QuickBooks Online he suggests a developer API key, Claude in the terminal and skills for transaction matching, journal entries and monthly bank reconciliations. Reported result (as claimed by the author): He says it handles a lot of the work on its own; he still answers its questions and makes the judgment calls. Source: https://x.com/timthecpa/status/2109833722711204147 Tools they used: Claude, Jev, QuickBooks Category: Money Please: 1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like). 2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure. 3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data. 4. Finish with a checklist to run it again next time.
You are helping me set up this AI use case end to end in Codex. Goal: Build an accountant's own bookkeeping system on Claude What the original author did: A CPA built his own bookkeeping software powered by Claude and Jev to handle routine work automatically. For people who stay on QuickBooks Online he suggests a developer API key, Claude in the terminal and skills for transaction matching, journal entries and monthly bank reconciliations. Reported result (as claimed by the author): He says it handles a lot of the work on its own; he still answers its questions and makes the judgment calls. Source: https://x.com/timthecpa/status/2109833722711204147 Tools they used: Claude, Jev, QuickBooks Category: Money Please: 1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like). 2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure. 3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data. 4. Finish with a checklist to run it again next time.
You are helping me set up this AI use case end to end in Grok Bot. Goal: Build an accountant's own bookkeeping system on Claude What the original author did: A CPA built his own bookkeeping software powered by Claude and Jev to handle routine work automatically. For people who stay on QuickBooks Online he suggests a developer API key, Claude in the terminal and skills for transaction matching, journal entries and monthly bank reconciliations. Reported result (as claimed by the author): He says it handles a lot of the work on its own; he still answers its questions and makes the judgment calls. Source: https://x.com/timthecpa/status/2109833722711204147 Tools they used: Claude, Jev, QuickBooks Category: Money Please: 1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like). 2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure. 3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data. 4. Finish with a checklist to run it again next time.
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Guides for this use case
How to build your own invoicing and bookkeeping app with AI · How to use Claude Code skills and plugins · How to use AI agents for taxes, bills and budgets · How to automate work with n8n and AI
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