Useful work for working firms.
Guides, use cases, and practical prompts for the jobs accounting firms need to do across many client books.
What do you need to solve first?
Firm operations
Use these guides to improve multi-client work, month-end close, reporting, and transaction workflow.
Managing many client books · Practice-management software · Transaction workflow · Month-end close
AI controls
Understand MCP access, audit records, approval boundaries, and the work that still requires professional judgment.
QuickBooks Online and Xero implementation
Plan integrations, bank-data access, and a controlled rollout across the client books your firm manages.
QuickBooks Online integrations · Bank transactions in Claude · Firm rollout
Guides by the work you need to do.
Start with the operational problem, not a generic list of tools. Each guide names the trade-offs and the parts that still need an accountant.
Managing many client books
The five-layer operating stack for a firm with many QuickBooks Online or Xero clients: practice management, intake, ledger access, review, and reporting.
Throughput and transaction workflow
Seven ways to make transaction work faster, which bottleneck each solves, and why review capacity remains the constraint.
AI for bookkeeping and reporting
Four categories of AI accounting tool, the diligence questions that matter, and the situations where another category is the better answer.
QuickBooks Online and Xero MCP
How accounting firms use a controlled MCP with Claude, ChatGPT, and approved clients, including roles, review, audit logs, and examples.
Bank and credit card transactions in Claude
Connect bank accounts and credit cards, review transaction data in Claude, and send approved accounting data to QuickBooks Online or Xero.
QuickBooks Online integrations
The integration categories by job, plus OAuth, scoping, duplicate prevention, and the checks to run before connecting a client file.
Use cases and real operating material.
Case studies
What changed in a real engagement, the work that ran, and the judgment a person still had to make.
PrismEdge: multi-entity opex audit
How a fractional CFO cut an audit across three entities from days to under two hours.
Prompt Library
The prompts our own accountants use for close, reconciliation, journal entries, reporting, and client communication.
When the question starts outside the ledger.
Use authoritative material alongside client records, firm instructions, and professional judgment. Numbers Game can use approved reference files as context. It does not replace the underlying guidance.
How reference files work
What belongs in a firm’s approved context, and where human review still matters.
Technical accounting
Recordkeeping
Need a direct answer before a guide?
Product FAQ
How connections, approvals, storage, and pricing work.
Security posture
The controls, boundaries, and capabilities we do not claim.
Blog
Notes and longer pieces from inside an accounting firm building the product it uses.
Bring a real client book. Leave with a number.
Book a 30-minute walkthrough and leave with a branded close report from your own books.